No Pressure Radiator Cap

High pressure caps are made for use on race cars only.

No pressure radiator cap.

When i removed the radiator cap there was no pressure on it. High pressure caps are available in pressures ranging form 19 to 32 pounds. I m not losing coolant. If there is no pressure in the cooling system the coolant will boil off.

Sometimes its hard to find a correct radiator cap. On the other hand if the pressure was allowed to increase above 16 psi the cooling system including the hoses and. Now after running the engine for 15 minutes or so i can remove the radiator cap and there still is no pressure on it. The cap on the right has been mangled to do that.

High pressure caps are available for open and closed cooling systems. Pressure testing the radiator. However you want to be sure that the problem is the cap and not in another part of the system. I can drive my rig for hours and nothing.

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. We get asked this question daily and it seems most people misunderstand what the pressure cap does. Cost was only 3 or 4 dollars. The cap pressure rating has nothing to do with regulating your engine coolant temperature nor will it make your engine run cooler.

This may help you find leaks or determine if the radiator cap has gone bad. The old mopars originally had no pressure radiator systems. The problem is my pepcock on my brand new radiator is leaking. I thought that it might be because the radiator was only 1 2 full of water.

So i replaced the radiator cap. My coolant shows no sign of oil. Let s take a pan of water and heat it up. If you have a radiator pressure tester then you can inspect the cooling system on your own.

It might simply be that the cap is no longer holding the pressure correctly. No pressure but it gets up to. I installed the stat spring side down so thats okay. The easiest way to fix this problem is with a new radiator cap.

To make a no pressure cap you want to remove the inner seal and fully tighten the cap so the outer seal keeps the coolant in the radiator and the overflow tank. There is one coolant cap that is quite different others. Find radiator caps with 0 psi maximum pressure psi and stant cap logo and get free shipping on orders over 99 at summit racing. They should not be used on passenger cars.

The water heats up and boils and 212 degrees. I bleed the system. You will also want to check the cap if you begin to have problems with the cooling system. I m at my wits end.

The outer seal seals the cap to the radiator. So i filled up the radiator. My dipstick shows no sign of coolant.