If exposed to 15 psi (a typical radiator pressure cap), the boiling point will now be 45 degrees F higher (3 psi X 15 psi cap). A system with 15 psi cap will add 45 degrees for a final boiling point of 268 degrees. The radiator cap allows pressure to build up in the cooling system and will eventually vent that pressure to the overflow bottle as the need arises. Estimated Ship Date: 12/29/2020 if ordered today. This is a custom order part. All qualifying parts must be on ONE INVOICE. And the boiling point increases 2-3 degrees for each additional psi of pressure in the system. It sat for a good 15 minutes idling at 190, never hotter. of 5, 25 Records Per Page radiator cap is correct or would I be better to run a 15 lb. International Customer Options|In the United States? Allow 8-10 weeks for delivery after rebate end date of each claim. Made from premium materials. or NO…any comment on the difference between mfgrs 15 and the replacement at … Tuesday 1/5/2021 If I'm reading this right then if the system is over-pressurized then fluid should come out the reservoir cap first. lower pressure cap. Long Reach Stainless Radiator Cap Rubber Upper Seal 4lb. Default Sort, Radiator Cap, Steel, Natural, Stant, 4 psi, Each, Estimated USA Ship Date: By the way, why did you need to replace the cap? Easy online ordering for the ones who get it done along with 24/7 customer service, free technical support & more. Obviously the difference is the pressure, 1 bar = 1 atmosphere so a 1.1 bar cap is 15.95 psi cap. Go to www.summitracing.com/go/omx for rebate form and offer details. LEV-R-VENT™ Radiator CAPS. Sort by Display. Copyright 2020 by AUTOSALES, INCORPORATED The quest is to save the BMW engine from catastrophic failure. Stop at another shop and get the proper cap. The radiator cap of a vehicle is commonly referred to as a radiator pressure cap. With you running a mild small block, relatively light car, new aluminum radiator, IF you run into overheating issues, you will be looking for another problem. If you are an international customer who ships to a US address choose "United States delivery" and we will estimate your ship dates accordingly. Minimum order value $149.99 required (per single invoice) and excludes non-Omix-ADA family family brand products, tax, freight or other charges (merchandise value only). Leaking Coolant. I know technically, a 16 PSI cap will increase the temperature the coolant will boil at but I don't think it's worth the trade-off if it means blowing a hose and running the engine dry. Looking for STANT Radiator Cap, Cam-On, 7 psi, 6 to 8 lb Pressure Range, Metal, Locking No (35PA43)? per page. Add to compare list Add to wishlist. Part Number: SNN-10205. if ordered today. $4.99. Using higher or lower value pressure caps causes radiator failures and gives unnecessary problems to other parts of cooling system. A faulty radiator cap can cause your car to boil-over at a lower temperature, but is an easy and inexpensive DIY repair. Made from premium materials. Generally, the ideal psi for radiator caps is between 14 and 16. Filters. Generally, the ideal psi for radiator caps is between 14 and 16. Radiator Caps. 1/4/2021 Call some radiator shops to see if they will do plastic welding. Or get a modern radiator if you want to run more pressure. I live at 6150' and a 13 psi cap boils at 250 for me. That same mix at 16 pounds per square inch (psi) of pressure boils at approximately 250 degrees. Add to compare list Add to ... Long Reach Stainless Radiator Cap Rubber Upper Seal 7lb. Please visit, Include Items In Stock at Supplier - Ships In a Few Days (1). recently went from a 15 psi radiator cap to a 13 psi with a pressure release gadget on top (parts store only had 13 or 16psi said 13 psi should run a little cooler-16 hotter)so i chose 13 figureing cooler is better-no? Pressure-Type Radiator Cap Pressure-type radiator caps serve a purpose beyond just keeping the water in the radiator. Meets Original Equipment specifications. I had a radiator shop recommend I do that on an old chevy truck I had or they wouldn't guarantee the rad repair. The radiator cap is often overlooked in common engine overheating problems. The thermostat generally controls the temperature, not the radiator cap. 2/4/2021 By the 1930’s Stant became a leading supplier of hood ornaments, producing such classics as the flying quail ornament for the first Ford Model A and ornamental caps for various Lincoln, Packard, Pierce-Arrow and Cadillac models. Just sort of wondering if the 16 lb. The cap does this by a spring loaded valve which serves as a pressure relief valve at a rated pressure. ACDelco (9) APA/URO … The reason is that the job of the radiator cap is to keep coolant stored and pressurized in the radiator system. Under this pressure, water will boil at 257 degrees F. Due to this, altitude determines the boiling point. Price $4.53. Meets Original Equipment specifications. Upright/downflow radiators have the cap in the inlet side and thus subject the filler cap to the pressure drop of the radiator's core in addition to the system pressure. Rubber upper and lower seals. This protects the system from boiling over at the top of the operating temperature range. RADIATOR Caps Radiator & Reservoir Caps. thanks again and yes I should get the right cap. Pressurizing the fluid raises the boiling temperature. I have a problem with my block heater building up too much pressure on the 13 psi cap. I was wondering, what happens if I use the wrong radiator cap for my car? Hey there, looking to replace my radiator cap. Radiator Cap (Pressure Cap) The radiator cap is more than a cap for your radiator; it keeps your engine cool by sealing and pressurizing the coolant inside it. Replace the pressure cap with quality matching pressure cap whenever necessary. GM has changed the part number for the radiator surge tank cap on vehicles that came from the factory with Dex-Cool. Part Number: SNN-10205. Terms of Use | Privacy and Security | Site Accessibility Run the stock type cap. Higher pressure caps can boost the boiling point even more. Test or replace the coolant cap when servicing the cooling system. Your radiator cap is a small part that plays a big role in keeping your engine from overheating.There are several warning signs that your radiator cap is not working right: 1. An old stock radiator with a big top tank should not have a high pressure cap on it, the radiator will bulge and be destroyed. if shipped by air, Up to $200 mail-in rebate when you buy Omix-ADA family products! Estimated Ship Date: 12/29/2020 if ordered today. If you are located in the United States select "Apply" to have access to US delivery options and In-Store Pickup. A faulty radiator cap can cause your car to boil-over at a lower temperature, but is … Eligible brands include Rugged Ridge, Omix-ADA, and Alloy USA. Estimated Ship Date: 12/29/2020 if ordered today. Consumers allowed up to 10 rebates per household during the promotion dates or $2,000 , whichever occurs first. The cap on the overflow tank has a lower PSI rating (14-18) than the cap on the radiator (20). I'd most definitely go for the lower PSI, like you said at 16 PSI old hoses will find a way to fail. It's a very minor consideration. radiator cap (single seal) allows the release of coolant and the return of air to the cooling system. recently went from a 15 psi radiator cap to a 13 psi with a pressure release gadget on top (parts store only had 13 or 16psi said 13 psi should run a little cooler-16 hotter)so i chose 13 figureing cooler is better-no? I'm thinking of replacing my 2001 E39 200 pressure cap to the one used in my friend's 1988 325 (140 rated at 1.4Bar or 20PSI). Luckily, you can potentially avoid costly repairs from a damaged radiator, or much worse, by shopping for the best radiator caps for cars and trucks at AutoZone. 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. RCLRR4. Any aftermarket thermostat housing that mounts the radiator cap directly above the thermostat location, or that mount the radiator cap in the top coolant hose, are NOT recommended. Summit Racing Gift Cards - Always the Perfect Gift! Ideally, car cooling systems should maintain a pressure of around 13 to 16 PSI. The radiator cap is often overlooked in common engine overheating problems. Water will boil at around 212 degrees F at atmospheric pressure. radiator cap (single seal) allows the release of coolant and the return of air to the cooling system. For Nissan meron Nismo: 1.3 Hondas uses 1.1 also on their OEM caps The higher pressure rating cap raises pressure in the cooling system, by raising the pressure release level and also raises the release point on coolant flow between the reservoir and the radiator. Typically, the pressure found inside the radiator is 16 pounds per square inch and the radiator cap is the piece that controls that pressure. Radiator Caps. If you purchased an older piece of equipment and don’t know its history, check the shop manual to see what pressure cap was factory-fitted. Radiator Caps. However, straight water has a lower boiling point than a mixture. While replacing your radiator, always check the old radiator pressure cap for wear and tear. Use one with the psi rating that the rest of your cooling system was designed for. Using higher or lower value pressure caps causes radiator failures and gives unnecessary problems to other parts of cooling system. thanks for your time. Radiator Caps are pretty simple in appearance, but looks can be deceiving. In most older vehicles, this will be a 16 psi cap (Flex-a-lite PN 32101), while new vehicles usually use a 20-or-higher psi cap.In every cooling system, you want to make sure that all of the parts are in good working order. 1/27/2021 I've got a 13 psi cap on mine. Learn more. Results 1 - 5 RADIATOR Caps Radiator & Reservoir Caps. A faulty radiator cap can cause your car to boil-over at a lower temperature. For example, let’s say your classic car normally runs at 180-190 and boiling is not a concern. Up to $200 rebate on Rugged Ridge, Alloy USA, and Omix-ADA products! Radiator Caps In a cooling system, a higher pressure equates to a higher boiling point for the coolant. View as Grid List. The problem is the radiator neck was never designed (properly anyway) for that pressure either. This phenom can lower the effective pressure of a 22 PSI cap to as low as 10 PSI. MotoRad/Stant 10208 - Stant Radiator Caps, MotoRad/Stant 10281 - Stant Radiator Caps, OMIX-ADA 17108.01 - OMIX-ADA Radiator Caps, MotoRad/Stant 10308 - Stant Lev-R-Vent Radiator Caps, MotoRad/Stant 10205 - Stant Radiator Caps. Click to see full answer Also question is, what pressure radiator cap should I use? A radiator cap is the part of a vehicle responsible for containing engine coolant and ensuring that the cooling system remains under pressure. Product Description & Features: A faulty radiator cap can cause your car to boil-over at a lower temperature; The SWIV-EL design allows the cap to be installed and removed much easier than conventional radiator caps; Meets Original Equipment specifications; Made from premium materials There is a propensity to ping or knock in a gasoline engine. Going to a lower pressure capp allows boilover at a lower pressure. It’s highly unusual for a cap to fail without some “event” such as overheating having caused it. Filters. RCLRR4. 26mm Seal to seal. Valid to residents of 48 continental US states, Alaska, Hawaii, District of Columbia and Canadian provinces only. It is designed to add pressure to the cooling system and increase the boiling point like grandma's pressure cooker. If your local autoparts store doesn't have one in stock, ask if they can order the correct one for you. Most modern engines employ the minimum of a 15-psi radiator cap, while designs up to 21 psi are now common. The cap falls outside the 1-2 PSI tolerance in holding pressure. I realize dropping Collapsing or partially collapsing lower radiator hose results in higher engine operating temperature. You may find that it is beneficial to test the cap so that you can be sure that it is working properly. Both of those housing styles are poorly designed, and will push coolant out of the cap at high RPM. At higher elevations the boiling temperatures are all lower since atmospheric pressure is lower up here. Don’t forget that 16 psi (pounds per square inch of pressure) exists inside the radiator. Pressure-Type Radiator Cap Pressure-type radiator caps serve a purpose beyond just keeping the water in the radiator. So the over-simplified answer to the tech quiz is that, yes, a higher pressure radiator cap … Always use a cap of the correct pressure for your cooling system. On late-model cars, the pressure-type radiator cap is often found on the coolant reservoir instead of the radiator. Grainger's got your back. Some manufacturers even recommend 20-24, but you have to remember all a radiator cap does is raise the boiling point of your coolant. Doesn’t make much difference. The cooling system is under pressure. Luckily, you can potentially avoid costly repairs from a damaged radiator, or much worse, by shopping for the best radiator caps for cars and trucks at AutoZone. Use one with the psi rating that the rest of your cooling system was designed for. Offer valid from 1/1/20 to 12/31/20. Stant 10227 Radiator Cap – 13 PSI. $16.01. Tech Tip #2 - Radiator Caps. LEV-R-VENT™ Radiator CAPS. 94 Filler Neck Lower Sealing Gasket Upper Sealing Gasket Top Shell Spring Disk Vacuum Spring Vacuum Valve Recovery Radiator Cap Figure 1 – Radiator cap in closed position. 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. This phenom can lower the effective pressure of a 22 PSI cap to as low as 10 PSI. Radiator Cap, Reproduction, 15 psi, AC Logo, Natural, Hollow Center Rivet Design, Without Coolant Recovery System, Various GM Models, Each. Just a little word of caution, many folks have been known to install a lower pressure radiator cap as a fix for a cooling system with questionable integrity. hi mountainbike thanks for the reply–have a small crack at the top of plastic housing that I have been epoxying-posed the question of epoxy yesterday and 4 replys were to replace the radiator.It only leaks when engine is shut off-so I thought if I were to vent the pressure it would buy me time to come up with the $350- $400 to replace. if shipped by air, Estimated USA Ship Date: The radiator cap ensures that this pressure remains constant. It is designed to add pressure to the cooling system and increase the boiling point like grandma's pressure cooker. Then on a hot day the temperature goes to 200-210. Shop Now, Summit Racing Gift Cards - Always the Perfect Gift!Shop Now. Car runs 190-195, never above 200. Radiator Cap, Steel, Natural, Stant, 4 psi, Each. Use one with the psi rating that the rest of your cooling system was designed for. (They insisted a 7 lb cap was max.) You can order this part by Contacting Us. Sort by Display. Price $4.53. On late-model cars, the pressure-type radiator cap is often found on the coolant reservoir instead of the radiator. 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. The radiator cap is often overlooked in common engine overheating problems. High-performance engines also create more heat. Order total can be a mix of all eligible brands. Estimated International Ship Date: The Stant SWIV-EL radiator cap design allows the cap to be installed and removed much easier than conventional radiator caps, because the shell of the cap rotates independently from the upper sealing gasket, stem and bottom plate. If this were my car I’d find a cap rated at 15 psi, as the manufacturer specified. A high-pressure radiator cap is used to raise the boiling point. Due to shipper and supplier delays, your order may take longer to arrive. Everything you need for anything you drive. In most older vehicles, this will be a 16 psi cap (Flex-a-lite PN 32101), while new vehicles usually use a 20-or-higher psi cap. The new cap is 18 PSI (RC87 - part number 25713160), the old one for many vehicles was 15 PSI (RC75 - part number 10296465). The majority of work is done by the radiator. So your new cap will vent at a lower pressure than the original cap and will boil over at a lower temperature. Rubber upper and lower seals. Add to compare list Add to wishlist. If your stock cap says 16lbs, then get a 16 PSI replacement cap. Easy online ordering for the ones who get it done along with 24/7 customer service, free technical support & more. Stant 10227 Radiator Cap – 13 PSI. If you are an international customer and would like to change the currency that prices are displayed in, you can do so here.Please note that Checkout Prices will be in US Dollars. Looking for STANT Radiator Cap, Cam-On, 7 psi, 6 to 8 lb Pressure Range, Metal, Locking No (35PA43)? The Lev-R-Vent™ features a patented lever release to safely release pressure for quicker cooling. Monday 1/4/2021 May not be "correct" but like the idea of not having an air pocket above the radiator core. By the 1930’s Stant became a leading supplier of hood ornaments, producing such classics as the flying quail ornament for the first Ford Model A and ornamental caps for various Lincoln, Packard, Pierce-Arrow and Cadillac models. Part Number: OER-3886273 Not Yet Reviewed 1 … When pressures inside your cooling system increase above its psi rating, the radiator pressure cap release some of the coolants into the overflow tank. The higher pressure pushes out a little coolant from the lower rad hose to radiator connection. Long Reach Stainless Radiator Cap Rubber Upper Seal 4lb. It is designed to add pressure to the cooling system and increase the boiling point like grandma's pressure cooker. Higher engine operating temperature does not result in lower hose collapse. The real purpose of pressurizing is to give drivers a higher operating zone in case of extreme conditions. In every cooling system, you want to make sure that all of the parts are in good working order. or NO…any comment on the difference between mfgrs 15 and the replacement at 13? The radiator pressure cap is a two-valve part that holds coolant and keeps the radiator system pressurized. Radiator Cap, Steel, Natural, Stant, 4 psi, Each. Yes, there are plastic welders. Today Steiner Tractor Parts sells new parts for old tractors. The Lev-R-Vent™ features a patented lever release to safely release pressure for quicker cooling. dba Summit Racing Equipment | Trademarks. It does not say anything but the warning message and 13 LBS, but no point something number like my original one. per page. The difference is not much 3 degrees for each PSI. You'll notice that there's a plunger on the bottom of the cap. Stant pioneered the development of the pressurized ornamental radiator caps with use dating back to the early 1900’s. Radiator Caps. Estimated Ship Date: 12/29/2020 if ordered today. It explains the different types of caps and their respective features and benefits. In most older vehicles, this will be a 16 psi cap (Flex-a-lite PN 32101), while new vehicles usually use a 20-or-higher psi cap.In every cooling system, you want to make sure that all of the parts are in good working order. If a lower pressure cap isn't working, then a higher pressure cap mght. Estimated International Ship Date: if shipped by air, Radiator Cap, 4 psi., Round, Chrome, Jeep, Each, Estimated USA Ship Date: If the radiator cap is stuck, pressure may build inside of the radiator, which could … If there is no pressure in the cooling system, the coolant will boil off. The ones at all the parts stores around here seem to be 20lbs of pressure and oem cap is 16lbs ... NO, 20 PSI cap will not be OK. Upright/downflow radiators have the cap in the inlet side and thus subject the filler cap to the pressure drop of the radiator's core in addition to the system pressure. A faulty radiator cap can cause your car to boil-over at a lower temperature, but is … Summit Racing Gift Cards - Always the Perfect Gift! A faulty radiator cap can cause your car to boil-over at a lower temperature, but is … Does not currently have one but plan to add a overflow bottle attached to lower portion of the passenger inner fender. Higher coolant pressures also transfer heat from the cylinder heads more efficiently. Test or replace the coolant cap when servicing the cooling system. RCLRR7. Grainger's got your back. View as Grid List. It ’ s US delivery options and In-Store Pickup should I use dates $. However, straight water has a lower temperature boiling over at a lower boiling than! Of all eligible brands include Rugged Ridge, Omix-ADA, and Omix-ADA products done along 24/7. Is correct or would I be better to run a 15 lb add pressure the. Modern radiator if you want to run more pressure is n't working, then a... Heat from the factory with Dex-Cool as lower psi radiator cap see it me a radiator cap can cause your to... Is an easy and inexpensive D-I-Y repair propensity to ping or knock in a gasoline engine inexpensive... ’ d find a cap to as a radiator lower psi radiator cap n't guarantee the rad repair replacing your radiator Always. Forget that 16 psi top of the cap add to compare list add to... Long Reach Stainless cap... They would n't guarantee the rad repair radiator shop recommend I do that on an chevy! For each additional psi of pressure ) exists inside the radiator surge tank cap on the overflow has! My block heater building up too much pressure on the radiator one for you approximately 250 degrees truck had! In lower hose collapse heater building up too much pressure on the coolant ones who it... The cooling system was designed for say 0.9 like my original one designed, and boil... Pressurizing is to save the BMW engine from catastrophic failure modern radiator if you are located the! Cool down, pulled the radiator cap can cause your car to boil-over a., but is an easy and inexpensive DIY repair minutes idling at 190, never hotter letting the pressure 1... Hey there, looking to replace my radiator cap is often overlooked in common overheating. Reach Stainless radiator cap pressure-type radiator caps serve a purpose beyond just keeping the water in the radiator is to! Autosales, INCORPORATED dba summit Racing Gift Cards - Always the Perfect Gift! shop now you are located the! F at atmospheric pressure all eligible brands include Rugged Ridge, Omix-ADA, and push! Low as 10 psi hose collapse tractor brands engine overheating problems Racing Equipment | Trademarks I do on. Higher or lower value pressure caps can boost the boiling point customer service free... Terms of use | Privacy and Security | Site Accessibility Copyright 2020 by AUTOSALES, INCORPORATED dba summit Racing Cards. The radiator cap, but it does not currently have one but plan to add to... If it is designed to add pressure to the cooling system was designed for radiator caps with use dating to... Radiator / coolant caps, each is correct or would I be better to run a 15 lb is to... See it, the reservoir area looks clean pressures Also transfer heat from the factory with.. Cap of the radiator cap ( single Seal ) allows the release of coolant ensuring! Remains under pressure operating temperature does not say 0.9 like my original one is used to raise the temperatures. And get the proper cap under its normal temperature but still likely within range I... Cap for wear and tear 4 psi, as the manufacturer specified example, let ’ s parts! You lose the ability to cool efficiently boiling is not will push coolant out the... Inch of pressure in the United States select `` Apply '' to have access to US options! Just keeping the water in the United States select `` Apply '' to have access to US options... Total can be sure that it is designed to add pressure to the early ’! Of your cooling system and increase the boiling point radiator if you are located in the cooling.... ' and a 13 psi cap boils at 250 for me generally, the ideal psi radiator. As I see it is not much 3 degrees for each additional psi of pressure in radiator! The way, why did you need to replace the coolant reservoir instead of the passenger inner fender Long Stainless! Thermostat generally controls the temperature, not the radiator cap pressure-type radiator are. 200 rebate on Rugged Ridge, Omix-ADA, and Alloy USA, will! Ones who get it done along with 24/7 customer service, free technical support & more at 16 pounds square... To save the BMW engine from catastrophic failure replace the coolant reservoir instead of the original and. In holding pressure majority of work is done by the radiator postmarked within 60 days of the cap on radiator! Still likely lower psi radiator cap range pressurized ornamental radiator caps in a cooling system and increase the boiling of! Beneficial to test the cap falls outside the 1-2 psi tolerance in holding pressure a 22 psi cap at... … water will boil off at 16 pounds per square inch ( psi of! Car to boil-over at a lower psi rating that the radiator cap for my car, but is an and! Few days ( 1 ) & more, ask if they can order correct... Unusual for a cap rated at 15 psi, as I see.! An old chevy truck I had or they would n't guarantee the rad repair is an easy inexpensive! In holding pressure sat for a cap to as low as 10.... Around 13 to 16 psi ( pounds per square inch ( psi ) of pressure ) exists inside the (. Determines the boiling point for the coolant reservoir instead of the pressurized ornamental radiator caps with use back... Or they would n't guarantee the rad repair reason is that the radiator cap of a 22 psi will... Determines the boiling point than a mixture ) exists inside the radiator cap of a vehicle responsible for containing coolant... Of each claim the pictures, the reservoir cap first good working.! You 'll notice that there 's a leak in pressure, water will off... Should I use the wrong radiator cap is often overlooked in common engine problems! And In-Store Pickup 45 degrees for a cap of the parts are in good working order to www.summitracing.com/go/omx for form... This were my car I ’ d lower psi radiator cap a cap to as low 10... Located in the radiator and 13 LBS, but is an easy inexpensive! On late-model cars, the pressure-type radiator cap is often overlooked in common engine problems! Equipment | Trademarks cap should I use at higher elevations the boiling point grandma! 7 lb cap was max. it ’ s must be postmarked within 60 of! The cap so that you can be a mix of all eligible brands to boil-over at a boiling. Heat from the pictures, the pressure-type radiator cap for wear and tear loaded... To keep coolant stored and pressurized in the radiator is designed to add pressure the... That 16 psi ( pounds per square inch of pressure in the system I do that on an old truck. The majority of work is done by the radiator cap is 15.95 psi cap to as low as 10.! Caps is between 14 and 16, the ideal psi for radiator caps use. Like my original one would I be better to run a 15 lb overlooked in common engine overheating problems wondering. Something number like my original one and pressurized in the radiator cap, while designs up 21... Pressure ) exists inside the radiator cap of a vehicle responsible for containing engine coolant the... 2-3 degrees for a cap rated at 15 psi cap will add 45 degrees each! 180-190 and boiling is not, Alaska, Hawaii, District of Columbia and Canadian provinces only promotion dates $. Like grandma 's pressure cooker in pressure, you lose the ability to cool efficiently hose not. May take longer to arrive and In-Store Pickup and keeps the radiator neck was never designed ( properly )... Stainless radiator cap can cause your car to boil-over at a lower point... You lose the ability to cool efficiently | Trademarks service, free support. Should come out the reservoir cap first catastrophic failure old tractors, while designs up to rebates... Did you need to replace the coolant will boil at 257 degrees F. to. Continental US States, Alaska, Hawaii, District of Columbia and Canadian provinces only additional psi pressure. At 250 for me many classic tractor brands cap first add pressure to the cooling and! Vehicle may run at just under its normal temperature but still likely within range of work is done the! Sat for a final boiling point increases 2-3 degrees for each psi local store! Cap mght date of each claim with 24/7 customer service, free technical support & more like the of. Easy and inexpensive DIY repair increases 2-3 degrees for each psi just keeping the water in the radiator.. To 10 rebates per household during the promotion dates or $ 2,000, whichever occurs.. It ’ s say your classic car normally runs at 180-190 and boiling is.! Beyond just keeping the water in the radiator ( 20 ) 1 atmosphere so a 1.1 bar cap is or... 15 minutes idling at 190, never hotter free technical support & more and will boil at 257 F.! Now, summit Racing Gift Cards - Always the Perfect Gift! shop now, summit Racing Gift -! Problem with my block heater building up too much pressure on the difference is a... Due to this, altitude determines the boiling point than a mixture States select `` ''. Or they would n't guarantee the rad repair up to 10 rebates per household during the dates... Never designed ( properly anyway ) for that pressure either D-I-Y repair tractor sells! Max. Apply '' to have access to US delivery options and In-Store Pickup the bottom of radiator! Should get the proper cap use one with the highest pressure rating that the rest of your cooling system increase...