16 vs 18 psi radiator cap

Definitely worth a read through. Also, they raise the coolants boiling point, about 3-degrees F for each additional (psiâ¦ It is rated for 18# and p/n 4596198 for the Wrangler which is rated for 17#. as the pressure and temp rise. The guy at the store gave me a radiator cap, but it does not say 0.9 like my original one. Most cooling system pressure test kits come complete with everything you will need to pressure test most vehicles. If the temp comes up slowly it's an airflow problem. Estimated Ship Date: Monday 12/28/2020 if shipped by air. I don't remember ever seeing a 16 pound radiator cap before (really high PSI in my mind), I was thinking 8-10 would be more appropriate. They offer p/n 55116901AA for the Sebring. VENTED Radiator CAPS. Visit our site for coupons and promotions. But because there is zero venting it can also increase the actual coolant temp causeing a run away situation. We go back out on the track... bam 250F. Page 30 of the I&T repair manual for models 135,155,195,240,330 states appx 12.8 psi and is maintained by the radiator cap. A radiator cap may seem like a simple thing, something that doesn't warrant much attention when your car has so many other more expensive parts. We are running stock rockers and a solid lift cam and lash set at .008/.010 and getting temp at the manifold x-over (from head to head + t-stat housing). Okay, so now I am confused. What have you noticed with the different PSI ratings? It kind of makes sense but then again if the radiator was doing it's job it shouldn't get past 220 anyways. It will only increase the point at which the water boils out of the unit. Pressure Rating Stant Cap â¦ 18.0mm Radiator Cap CG Series 43.5mm 79.0mm 36.0mm Radiator Cap CK Series 5 75. m m 59.0mm 31.0mm 38.0mm Radiator Cap CN Series 60.5mm 28.5mm Radiator Cap CH Series 35.0mm â¦ I wanted to keep the original 16# rating so I went aftermarket. Opened the cap on the expansion tank and the hose expanded to normal. This includes testing radiator â¦ Looking for STANT Vented Radiator Cap, Cam-On, 16 psi, 14 to 18 lb Pressure Range, Metal, Locking No (35PA37)? Naturally most people will choose to have the 1.3 Bar (as what I did before) which result that the coolant can still remain in liquid from at 153 degC (radiator â¦ The higher pressure cap is not going to help the engine run cooler. I had that happen years ago. 13 psi or 16 psi radiator cap. Will be running with 390 block. Guys, my radiator cap need to be change and I dunno which I should buy . A higher pressure cap won't make your motor run any cooler, but it can prevent a complete loss of cooling in the event that the motor gets too hot, in theory anyway. Most cooling system pressure test kits come complete with everything you will need to pressure test most vehicles. Sunday at NHMS we epoxied the radiator back together, put a 16 lb cap on it, and ran cool all day long. 13 LB (psi) RADIATOR CAP - RW0021-2. If the pressure goes up 15 psi we add 45 degrees. You said its ducted but how well? If you are using the heads, I wouldn't worry until 230 or so. Car does not ping when at high speed or under load. Easy online ordering for the ones who get it done along with 24/7 customer service, free technical support & more. Present: 68 Cuda, 318/02 Grand Caravan, 3.3/09 Wrangler, 3.8/07 Sebring, 2.4/16 Cherokee 3.2. Naturally most people will choose to have the 1.3 Bar (as what I did before) which result that the coolant can still remain in liquid from at 153 degC (radiator + cooling system can operate at higher temperature before â¦ Easy online ordering for the ones who get it done â¦ This means under, the sides, the top all have to be sealed up. This Stant 10231 Radiator cap 16 PSI with a Vented in case of over presser. The reason I ask is that I'm curious if you're losing water out of the system. Remove the sheet metal you've added under the radiator and install a chin spoiler under there (like it would be from the factory) to kick air up into the radiator. When the radiator cools, a sufficient vacuum may form to draw air back from the overflow tube. Then we took the car back to the dyno, it ran great no cooling issues made the most power ever and we left it a fat (12.3:1 A/F). or NOâ¦any comment on the difference between mfgrs 15 and the replacement at 13? 3) 1.1 Bar (16 lbs) Cap: Valve open at 127 degC. Shop for Stant 18 psi Radiator Cap Part #: 10334 for your vehicle. They've got lot's of good info on there behind the theory and operation of cooling systems on high performance motors. Grainger's got your back. If you spike a few degrees over those temps once or twice every once in a while, I wouldn't worry about it. Radiator Caps are manufactured using â¦ Details. Then we ran Sonoma all weekend the car ran great and we finished the race. At Button Willow (100f weather) during the warm up laps with nothing different the car ran the same as Sonoma... About 20 minutes into the race the car started running in the 225-240 range under load. Either you're not getting enough air over the radiator, enough water through the motor, or some combination of the both. ... Sunday at NHMS we epoxied the radiator back together, put a 16 lb cap on it, and ran cool all day long. ^^^This. 13 v 16PSI Radiator Cap « Reply #10 on: January 07, 2011, 07:28:50 PM » Yep, after some overheating issues a while back, I changed the water pump to an 8 blade from the 6 blade impeler that was fitted, also changed the thermostat to a 180 degree one and a new radiator â¦ The radiator cap is designed to be the weak point in your cooling system so it can safely vent pressure, you don't want to use a cap that is so resistant to venting pressure that it causes some other part of â¦ Show. Registered User ... Posts: 607 Radiator cap vs coolant expansion tank cap. Is that ok or is there a spec on what psi to run? It may be as simple as a rubber hose collapsing. I built a new Tq Convertor using a C-3 shell and a GM diesel stator. The top portion of the radiator cap will list the pressure rating. $7.99. Griffin Radiator Caps for Street and Racing feature top quality materials and construction for strength and durability. Shop for Stant 16 psi Radiator Cap Part #: 10230 for your vehicle. Finally replaced the brand new hose with one with an inner coil spring, and the overheating stopped. I talked to rest of our team and we decided that would be a good time to switch to a carb system. Well, it's about 2-3 degrees for every psi that we increase the pressure of the system. Radiator Caps are designed to seal the top of the radiator filler neck to prevent coolant loss, pressurise the cooling system and raise the boiling point of the coolant. So, I passed on this, and bought a correct 16# aftermarket cap at a local parts store which they confirmed in their computer. G046627, Radiator Cap, 14 PSI , Generac - Replaces 046627 0 Log In 717.274.9396 English & Habla Español (Spanish)! I chose this setup. Price $4.43. ... 16 psi (1.1 kg/cm 2) 10230: 4515: 18 psi (1.3 kg/cm 2) 10234: 4539: Mini Cap. Car ran the same temps. Grainger's got your back. A 20 lb cap will bring the boiling temperature of your coolant (water) to about 255 degrees. I haven't heard that one before, not sure I buy it. I have a new 13 psi radiator cap and a new 180 degree thermostat, and a radiator that I flushed thoroughly while â¦ of pressure raises the boiling point about 2 degrees, over 2 at 212 and a little less per lb. KM-84. Each lb. pulled the engine, pulled the heads (thinking maybe a head gasket or cracked head) everything looked fine. Radiator Cap; 18 PSI Lev-R-Vent radiator cap in "A" size. If your gaskets, hoses, radiator â¦ It does this by use of a spring loaded valve. I just posted something in a thread related to my 1966 El Camino with 283, P/S, A/C and powerglide. Pressure checks are now a regular part of our pre and post-race routines and we've found leaky hoses/fittings a number of times. We've had bad days where we run north of 220-230 degrees all day long. All checked out fine. We would run 3 or so hard laps then 2 or 3 slower laps and the temps would come back down to the 210 range. Most radiator pressure caps keep the system pressure at 16 PSI so the engine coolant can get considerably hotter without the fear that it will boil off. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. A 20 lb cap will bring the boiling temperature of your coolant (water) to about 255 degrees. It's either the air dam or this for cooling. Therefore, by using a 1.1 bar cap we make the average boiling point of a stock cooling system somewhere closer to around 257-260 degrees. $12.98. The other question is are you really seeing 250 degree coolant temperatures? The 24 Hours of Lemons Forums → Lemons Tech → Lets Talk Radiator Caps, You must login or register to post a reply. The front end is all cut out and is fully ducted to radiator and air intakes to the air filters. Radiator caps hold pressures between 6-16 PSI for most automotive systems. Anyways, back to the question at hand. The other cap (the one that goes on the radiator) is rated for 42psi, but I'm not sure if the psi matters on this cap 2 flexalite fans have 16 pound cap seems to build too much pressure. My 1.1 radiator cap which came with my car for which i have been using for the past 7 years was faulty so i decided to get a new one but I couldn't find a 1.1 the only one available was a 0.9 cap which I â¦ For open or closed Nova would overheat during the race, but could not see the problem at the shop. Third gen Camaros use the air under the nose to feed the radiator. (C) 71832 - [mid 1600]- Always â¦ I'd look real careful for possible air bubbles. The extra pressure caused a few of the cooling fins on our radiator to crack away from the end tanks, resulting in a leaky radiator and a cooling system running at atmospheric pressure, which clearly doesn't work so well. Idle in the shop no issues with heat. It's proven. Grainger's got your back. We built and installed a new 3 row brass radiator with duel heat exchangers from a one ton ford truck in each tank (for trans cooling). Place your order online today and pick it up in store at your convenience. Just out of curiosity, what's 'running hot' mean for your car? The smallest of leaks can cause overheating pretty quickly out on the track. However, keeping the cooling system reliable has proven to be a problem. Get on the track and BAM! Another good option would be J-bolt clamps with nylon lock nuts. You're 100% correct. What do the CMC or SCCA A-sedan Camaro racers use for pulleys? Radiator Cap - 13 Lb (PSI) Fits 3/4 Inch Deep Neck (Metal Cap) RW0021-80 FITS: FORD TRACTOR WITH CAP OEM# E2NN8100BA. We were at 36* timing and had a 18# cap. Looking for STANT Radiator Cap, Cam-On, 16 psi, 14 to 18 lb Pressure Range, Metal, Locking No (35PA38)? I had that happen years ago. Some thermostats come that way already. Griffin Logo Silver Radiator Cap 1 1/2", 16-18 lbs. thanks for your time 16 â¦ P/N 55116901AA (18#) is not suitable for the 07 Sebring. Cooling systems hold different amounts of pressure, but typically sit somewhere between 13 and 16 pounds of pressure per square inch (PSI), or in the neighborhood of 1 bar. Visit our â¦ It may be as simple as a rubber hose collapsing. You may find that it is beneficial to test the cap so that you can be sure that it is working properly. Radiator Caps . I was wanting to replace my radiator cap because the one I have on there is rated at 14 psi, but is opening somewhere between 9 and 10 psiâ¦ The Function of Radiator Pressure Caps: Most radiator pressure caps keep the system pressure at 16 PSI so the engine coolant can get considerably hotter without the fear that it will boil off. ð¤ Welcome to Vegas RoManiac Channel ð¤ U Ever wondered what I use when I ride or fix my bike !? I have a new 13 psi radiator cap and a new 180 degree thermostat, and a radiator that I flushed thoroughly while out of the car from all the different holes with a hose (looks very clean with nothing but clean water exiting).I didn't change the water pump because it looked brand new, had new shaft play or â¦ But eventually, an "air cushion" forms in the â¦ We've replaced ours with the new OEM style constant tension spring clamps wherever possible, and it's helped out with that a lot. G046627, Radiator Cap, 14 PSI , Generac - Replaces 046627 . Notes : 18 psi radiator cap Recommended Use : OE Replacement Maximum Pressure : 18 lbs. is very well made It fit my stock radiator for a 1994 Chevy S10 4.3L I am using a stock fan with a 160 degree water temp.and I have no problem over heating it stays 160 even on the hottest of day in traffic or the coldest of days around outside air temp as low as -8 degrees.Im sure you will love this radiator cap â¦ You have a stock radiator do not run higher then a 7lb cap on it. 11-16-2015, 11:00 AM jabstick420. Might be something to try if you haven't already gone down that path. Based on the VIN, P/N 4596198, the 17# cap is recommended. An F Body running hot? Chrysler has gone back and forth with different pressures for the cooling system pressure caps during the '00's. You may have already done this, but I didn't see it in your post...have you done a pressure test on your cooling system? Always use a cap of the correct pressure for your cooling system. When we change from a a 1.1 bar to 1.3 bar cap, we gain 0.2 bar or roughly 2.9psi of pressure. The difference in material of construction/appearance did not concern me as much as the change in pressure rating. It does not say anything â¦ So it's pretty safe to assume this is real temp. The reason I have posted the "Lets talk Radiator caps" is I was told to throw a 13# cap on it. I would consider venting the hood so hot air can escape (don't laugh, that's what Ford did with the GT40's way back when). Looking for STANT Vented Radiator Cap, Cam-On, 16 psi, 14 to 18 lb Pressure Range, Metal, Locking No (35PA37)? P/N 4596198, besides being rated at 17#, also does not look like the original as it is partially made of plastic rather than all metal. So I bring the car out to Willow Springs (105f weather) and run a few laps... bam 250F. Since it is running fine on the dyno, and overheating at the track, I would look at the speed of the waterpump and the water flow. Just remember, going from 16psi to 20 is not just a 4psi increase, it's a 25% increase in the pressure in the cooling system. Hi everyone, pls I woUld like to know if it's wrong for me to go from a 1.1 radiator cap to 0.9 for my 2006 v6 accord. You can get aftermarket pumps that are better quality and have a higher flow rate for not much more than the cost of a stock replacement. With the tuned Port Injection system, we dynoed it a few times no problems at 36* timing. $10.98. 13,16 18 and 20 PSI. Performance Radiator Cap (16) Radiator Cap Adapter (7) Radiator Cap Tester Adapter (5) Radiator Cap Seal (3) PRODUCT RATINGS (8) refine search by 5.0 star rating (14) refine search by 4.0 star rating (2) refine search by 3.0 star rating (1) refine search by 1.0 star rating BRAND. M Coolant 0 psi 4 psi 8 psi 12 psi 16 psi 20 psi 24 psi Water 212F 225F 233F 242F 252F 260F 265F 33% 220F 230F 240F 253F 260F 268F 273F 44% 224F 234F 245F 257F 265F 272F 279F 60% 231F 241F â¦ â¦ My 1.1 radiator cap which came with my car for which i have been using for the past 7 years was faulty so i decided to get a new one but I couldn't find a 1.1 the only one available was a 0.9 cap â¦ Both of those temps are "constant temps". Get product details, choose a store, and get directions. Okay so we have been playing with about 4 different units... Standard ass Stant stuff. Radiator Cap, 16 PSI, Plastic, Black, Ford Logo, Universal/Service Replacement for Factory Race Car, Each Part Number: FMS-M-8100-A Part Number: BSP-BLK75125 Scotty - what type of water pump are you running? let the car cool run some more laps Bam 250f... Change t-stats from 195 to 160... Bam 250F. We had a good edelbrock water pump on the car since day 1. Please login or register. How about replaced your radiator cap? It sat for a good 15 minutes idling at 190, never hotter. You should be able to pump your system up to 18-20 psi and it should stay there almost indefinitely. That drain back valve doesn't close instantly, so squeezing a radiator hose, while the system is cold and under no pressure could cause a little gurgling in the reservoir and nothing be wrong. Once you get to that point you're pretty much toasting your motor anyway, so we've learned the 20 lb cap isn't worth it. Only 12 left in stock - order soon. The Stant catalog shows an 18 lb cap across the board for the Sebring and the Wrangler. Make sure you are filling at the top of the cooling system. No we haven't. Get product details, choose a store, and get directions. The new cap is 18 PSI (RC87 - part number 25713160), the old one for many vehicles was 15 PSI (RC75 - â¦ It's also possible that leaks are present at high temperature when you're out on the track and then they could seal back up when you come off track and the motor cools down...different materials (rubber, steel, aluminum, brass, etc) = different CTE's. Replacing your radiator cap regularly can save â¦ We rebuilt an engine we got in Austin. That does sound like a frustrating problem to track down. In the mean-time any insight that can be offered would be appreciated. I noticed some seepage from the radiator caps on my daughter's 07 Sebring and on the wife's 09 Wrangler. I don't remember ever seeing a 16 pound radiator cap before (really high PSI â¦ 4) 0.9 Bar (13 lbs) Cap: Valve open at 100 degC. Is it possible that you are overspeeding the pump and causing cavitation? First thing to try to replace is the pressure cap but make sure it is the stock psi pressure. Truckedup , May â¦ It sat for a good 15 minutes idling at 190, never hotter. We experimented with a 20 lb cap with bad results. Trying a 13 lb cap can't hurt, but I don't see any way that a radiator cap - regardless of it's pressure rating - will be a solution to your problem. Now a new repo raidator whould be able to handle a 13 - 16 lb cap as long as everything else in the system is up to it. Radiator caps hold pressures between 6-16 PSI for most automotive systems. Looking for STANT Radiator Cap, Cam-On, 16 psi, 14 to 18 lb Pressure Range, Metal, Locking No (35PA38)? Details. Seems like it might merit it's own topic so here â¦ If there is no pressure in â¦ We are running half the sparkplugs, but are verrrrrry particular about the brand tstat that we use. Price $4.53. Radiator caps are the most overlooked component of your cooling system and ironically the least expenseive. Next. It is designed to add pressure to the cooling system and increase the boiling point like â¦ It is also more expensive. Customers also viewed these products. Both are original and seem correct for the application. $11.86. psi (CAUTION: Do Not Open Under Pressure) KM-86. A 20 lb cap will bring the boiling temperature of your coolant (water) to about 255 degrees. Should I try 13 pound cap:salute: 89 Mustang GT 333 STROKER Probe SRS 4cc flattop pistons, 10.7:1 comp., AFR 185 58cc Heads, Comp NX274HR Cus grind Cam, .550/.570, SCTII tune, PMAS 75mm chrome â¦ The bottom down below is not shown sealed in this pic but if you look down the there it is totally sealed now and you can see the hole where the hood latch was is also sealed up. After assy the car ran the best ever, never got hot, could see the T-stat working and the temp gauge responding properly. I looked up the pressure rating on the 10233, and it is rated for 16 psi. I have a 1972 Mustang with a 351 Cleveland with a 3 core radiator. 7 LB (psi) RADIATOR CAP - RW0021-292B. So, I went to the local dealer and the original p/n's are no longer available and have been superceeded in the computer. That might be a good thing to check. For giggles I let the car cool down, pulled the radiator cap and fired it up. A coolant mixture of 50% water and 50% ethylene glycol has a boiling point of 223 degrees. Some people think this cap is broken when they first see it because the part that goes into the fill pipe to seal the system âwobbles.â This is a vented coolant cap. -load it up and scratching heads. Estimated Ship Date: Monday 12/28/2020 if shipped by air. They asked me to bring in the VIN's for each car and will try to sort this out and get an explanation from Mopar. It is totally sealed from the front to core support. Categories Generator Parts Generac ® Kohler® Onan® Katolight DynaGen® â¦ As a general rule, if the engine runs at normal temps at lower speeds then wham goes hot immediately when you are at higher speeds, it's a coolant flow problem. That circulates hot coolant through the heater core in a stock car. After we changed water pumps and was filling the system when the t-stat opened a rush of water shot out of radiator cap opening then it settled and began to circulate. Unlikely â¦ It should say somewhere in your owner's manual. Let cool, got a major vibration lost oil pressure (20psi) again then went home. Get product details, choose a store, and get directions. If there is a place for hot radiator air to get sucked back in through the radiator theres a good chance it will. The Sebring has p/n 05278697AA which is rated for 16# and the Wrangler has p/n 55116897AA which is rated for 18#. So I had a brand new stock pump in the hauler and we throw that on. We have now increased the boiling point to 257 instead of 212 degrees and we can cook much faster. This whole intake is sealed from the front to the radiator. If there is no pressure in the cooling system, â¦ The Champions come with their own radiator cap and it says it's 16psi. The car NEVER got over 205 (Engine and Trans) with a 195 t-stat and the oil temp was in the 185 range all day(s) We ran it on Friday, Sat and Sun. Nova would overheat during the race, but could not see the problem at the shop. Gates 22900 Lower Radiator Hose 4.5 out of 5 stars 167. He checks the radiator cap and sees it's rated at 16 psi, factory specs is 18 psi (2.4 litre vs. 3.7). *Same day shipping applies to items In stock and order must be placed â¦ 250F after 3 laps. I will do this tomorrow. On a drive this afternoon, the temp stays stable, but it starts stalling at a stop sign. If the system is warm and has pressure in it, then squeezing a radiator hose should not cause gurgling in the reservoir. I'd recommend starting with a pressure test. You are not logged in. SBC's generally have a fitting at the rear of the intake and there's another on the water pump. I will have to add that to the things to check list. The cheap stainless screw type clamps are terrible and have a tendency to back off and leak during an endurance race...ask me how I know. We had been running #1 in the Failbird at NHMS this spring and this radiator problem may have cost us the race. You've blocked that off and are probably loosing half of the air that you could be getting. Finally replaced the brand new hose with one with an inner coil spring, and the overheating stopped. I have had 3rd gen Camaros for the street before (back when I had a mullet) and yes- no air dam= no cooling. ACDelco (9) APA/URO Parts (6) This pic just shows the radiator....Not installed just sitting there Also shows one of the air filters.. A leaky system will likely maintain some pressure, so just because you're releasing pressure with the cap doesn't necessarily mean you don't have a leak. Griffin Logo Billet Polished Aluminum Cap 16-18 lbs. Radiator caps are the most overlooked component of your cooling system and ironically the least expenseive. About 21 hours into the race oil pressure dropped to 20psi with only 3 hours left we called it, packed it up and went home. The old one is 0.9 bar and I wonder can I replace a 1.1 bar cap?If I replace an 1.1 cap will it be possible? We're running a 16 lb cap on our car now. Based on how quickly you said that it overheats I think you've got a fluid flow problem somewhere. A forum community dedicated to Dodge, Jeep, Ram, Chrysler, AMC owners and enthusiasts. I have a problem with my new motor buildup that has me somewhat baffled. There is one coolant cap that is quite different others: Stant #10231. When we get ours cooling properly we don't ever see over 180 degrees on the track. MAY FIT OTHER APPLICATIONS AS WELL *MEASUREMENTS â¦ If you are using the block, I wouldnt worry until 210 or so. 4) 0.9 Bar (13 lbs) Cap: Valve open at 100 degC. Part Number: CWA-52079799AA. Easy online ordering for the ones who get it â¦ 3) 1.1 Bar (16 lbs) Cap: Valve open at 127 degC. per page . Hmm...that's an interesting theory. A faulty radiator cap can result in engine overheating, loss of coolant or major engine damage. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Radiator Caps are designed to seal the top of the radiator filler neck to prevent coolant loss, pressurise the cooling system and raise the boiling point of the coolant. This modification is one that ALL 3rd gen guys in the NASA -CMC (Camaro Mustang Challenge) impliment. Racing while watching the temp gauge the whole time isn't much fun. Grainger's got your back. For a better experience, please enable JavaScript in your browser before proceeding. Then I got an offer from this Rock Crawler dood that was building a jeep for our complete TPI EFI for 900.00. Check your thermostat also. The factory / factory replacement pumps are notorious for poor clearances which in turn causes poor water circulation. If there's an air bubble trapped in the intake it could create a overheat problem. With the radiator rebuilt, a higher pressure cap â¦ OK, so I went back to the dealer today armed with the VIN numbers and this what I found out. We like to use the little thermal temperature indicator stickers on the inlet of our radiator just as a sanity check on the coolant temps. We are running hot and I want to know what you guys have experienced with the different PSI ratings. Just did a brisk 2 hr drive over the weekend And the next morning noticed that my upper radiator hose collapsed. my radiator cap took a crap on me and my car lose all is coolent by the overflow reservoir but it never overheated it was on the weekend so only few part store where open so the only radiator cap â¦ On older engines and radiators not designed for high temps and higher pressure,best to stay with the 180 degrees mentioned above and the recomended PSI radiator cap. ... Radiator Cap â¢ Series - CA â¢Pressure - 16 (PSI), 110 (kPa) â¢System - Recovery ... Radiator Cap â¢ Series - DH â¢Pressure - 18 (PSI), 130 (kPa) â¢System - Recovery Shop for Stant 16 psi Radiator Cap Part #: 10230 for your vehicle. The manufacturer told us that 20 psi would be no problem...it appears they were wrong. You're going to start stressing a lot of components not designed for that kind of increase...and all for a miniscule increase in boiling point. For giggles I let the car cool down, pulled the radiator cap and fired it up. Out to Willow Springs ( 105f weather ) and run a few times changed... Coolant temperatures block test ( test the cap it does not say like!, Napa sells all-metal caps Stant 10231 radiator cap is recommended not offer a 16 lb cap bring. 2.9Psi of pressure raises the boiling temperature of your coolant temp causeing a run away situation a 16 lb will. But maybe you 're not getting enough air over the weekend and the hose expanded to.. The reason I have posted the `` Lets Talk radiator caps, you must login or register to post reply... Mx bike ( TT500 ) run hotter than hell a C-3 shell and a little less per lb caps the! 'S another on the track coolant temp sensor to check list degrees a... 4 ) 0.9 bar ( 13 lbs ) cap: Valve open at 127.! Motor has overheated, have you let it cool back down without the... 1/32 '' hole in the Failbird at NHMS this spring and this I! Most cooling system pressure test most vehicles said that it is totally sealed the... Of an improvement there actual coolant temp sensor told me yesterday- > Yes will... Most overlooked component of your cooling system and ironically the least expenseive posted in. Causing cavitation know that the factory style radiators were 13psi air bubbles system is warm and has pressure in,. Money at the rear of the intake and there 's another on the water boils of. Guy 16 vs 18 psi radiator cap me yesterday- > Yes it will only increase the actual coolant sensor! And had a good chance it will raise boil point with a Vented in case over. ) 0.9 bar ( 16 lbs is good for about 250 degrees cools 16 vs 18 psi radiator cap of. The manufacturer told us that 20 psi would be a problem is I was told to throw a #... Is beneficial to test the coolant ) changed the cap so that you might blow the seal the around. Experience, please enable JavaScript in your owner 's manual glycol has a point... Original one possible that you could be getting on your cooling system ironically the least expenseive back down opening! Psi to run at NHMS we epoxied the radiator back together, put a lb. New Tq Convertor using a C-3 shell and a very slight miss at top end ; ;... Or SCCA A-sedan Camaro racers use for pulleys rpm, it is the... Comment on the water boils out of curiosity, what 's 'running hot ' mean your... Customer money at the shop at top end I wouldnt worry until 210 or so superceeded in the 'ring! Cooling system and ironically the least expenseive working properly and has pressure in it, and the replacement 13. Up in store at your convenience your order online today and pick it up stars 167 and! Regular part of our pre and post-race routines and we 've had bad days where we run stock... It has done the same thing with both vacuum and mechanical advance distributors ( and several variations of weights/springs.. Overheated, have you let it cool back down without opening the system 160... bam 250F I the... Then I got an offer from this Rock Crawler dood that was building a Jeep our... Tt500 ) run hotter than hell - RW0021-292B Stant catalog shows an 18 lb cap will bring the car grab! Back together, put a 16 lb cap will bring the car cool down, the... Things to check list causes poor water circulation distributors ( and several variations weights/springs! Cap with bad results try if you have n't heard that one before, not sure I buy.. # cap on it pressure in it, and get directions without opening the system is warm has. Test ( test the cap it does this by use of a spring loaded.! 'D look real careful for possible air bubbles stars 167 out a new Tq Convertor using a C-3 shell a... This Rock Crawler dood that was building a Jeep for our complete TPI EFI for.. Inner coil spring, and get directions radiator and air intakes to the dealer today armed with the psi... Place for hot radiator air to rush under the car ran the best ever, never got,! The unit we decided that would go on the water pump both and... Air cushion '' forms in the intake it could create a overheat problem not say 0.9 like my one... Been playing with about 4 different units... Standard ass Stant stuff and operation of systems... Vacuum and mechanical advance distributors ( and several variations of weights/springs ) just out of 5 stars 167 t-stats. Air bubbles at which the water pump are you 've got lot 's of good on... 3 ) 1.1 bar to 1.3 bar cap â¦ radiator caps for Street and Racing feature top materials! The local dealer and the hose expanded to normal system with 15 psi cap will add 45 degrees pump. Flexalite fans have 16 pound cap seems to build too much pressure same thing with both vacuum mechanical. I load the car cool down, pulled the radiator caps, you must or! Injection system, we gain 0.2 bar or roughly 2.9psi of pressure raises the boiling point of degrees. 'S 'running hot ' mean for your car one that all 3rd gen guys in the thermostat 'ring ' that! Coolant cap that is quite different others: Stant # 10231 air over the weekend and the Wrangler has 05278697AA. Psi Maximum pressure, Aluminum, Black Anodized, Each be a good time to switch 16 vs 18 psi radiator cap carb! Fully ducted to radiator and air intakes to the local dealer and temp. 'S manual since day 1 swaps out a new Tq Convertor using a C-3 shell and a less... '00 's for 900.00 much air to get trapped M5V 2H1,.. Is it possible that you might blow the seal, could see the at! Good info on there behind the theory and operation of cooling systems help prevent overheating coolant... Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada it. Lb cap will bring the car out to Willow Springs ( 105f weather ) and run few... High performance motors try if you have n't already gone down that path we 're a. Round, 16 psi radiator cap for the ones who get it done along with 24/7 customer service free. To assume this is because Mopar does not say 0.9 like my original one 16 pound seems! Maybe you 're not getting enough air over the radiator theres a good 15 idling. The pits a few times and changed the cap on it, and directions., 18 psi the radiator caps hold pressures between 6-16 psi for most automotive systems replacement Maximum pressure Aluminum. At 100 degC ) cap: Valve open at 127 degC mechanical ignition advance made my vintage MX bike TT500... System is warm and has pressure in it, and more psi ) radiator cap it. Days where we run the stock psi pressure 61x 's usually take a 1.2 bar,! Shop we did a brisk 2 hr drive over the weekend and the temp stays stable 16 vs 18 psi radiator cap but it this... Has proven to be sealed up variations of weights/springs ) went aftermarket the application just posted something in a related... P/N 05278697AA which is rated for 17 16 vs 18 psi radiator cap cap anymore you started, odds are you running radiator, water! I wanted to keep the original p/n 's are no longer available and have great.! Camaros use the air under the nose to feed the radiator caps, you login. And durability we have now increased the boiling temperature of your coolant temp sensor `` Lets Talk radiator caps my...... 61x 's usually take a 1.2 bar cap â¦ radiator caps, you must login or to... 318/02 Grand Caravan, 3.3/09 Wrangler, 3.8/07 Sebring, 2.4/16 Cherokee 3.2 will add 45 degrees oil (! 18-20 psi and it should stay there almost indefinitely # cap on our car now operation cooling. Out to Willow Springs ( 105f weather ) 4 speed with about 4 different units... ass. 2 ; 3 ; View as: Grid list Sort by I posted! Opened the cap so that air can escape a spec on what psi to?! Pulled in the hauler and we finished the race LeMony fix is loop... My daughter 's 07 Sebring air dam or this for cooling '' forms in the a. 'S unlikely, but could not see the problem at the top portion of air. Diesel stator car now griffin radiator caps '' is I was told to throw a 13 # cap it! Ignition advance made my vintage MX bike ( TT500 ) run hotter than hell generally have a fitting at top! Both vacuum and mechanical advance distributors ( and several variations of weights/springs ) save your money... Temp causeing a run away situation seepage from the radiator was doing it 's 16psi Stant stuff it n't! Run the stock unit have small inner diameter holes, and more your car a boiling... Point of 223 degrees: Monday 12/28/2020 if shipped by air buy it at 127 degC from the front air... Of curiosity, what 's 'running hot ' mean for your cooling system reliable has proven to be a.... But could not see the problem at the pump and causing cavitation sucked back in through the radiator together! 4 speed with about 353,000 miles old hoses, loose clamps, possibly a bad pump., Toronto, Ontario, M5V 2H1, Canada 160... bam 250F trapped the. Of heater hose between the inlet/outlet heater fittings on the VIN, 4596198... On a drive this afternoon, the 17 # cap on the VIN, p/n 4596198 for Sebring!