240sx Radiator Caps

[Bryan88]

I was doing some prep work on the car last night (planning on doing RA in July as well) and I swear the radiator cap said 24psi on it. I'll have to double check. I have not had any issues with hoses blowing off, though there's not a stock piece anywhere.

Barber is labor day weekend and I'm planning on making that one to get in a couple more races. Running a reduced schedule this year as well.

David

Back in my dirt racing days I ran a 24 pound cap with the radiator hoses double clamped.

[betamotorsports]

I used to run a 240Z with a 3L L6 at 14 to 1 CR. I had a localized hot spot problem (#5 exhaust valve area) in the cooling system that was causing very slight detonation and making the computer dial back timing. Increasing cooling system pressure to 28 psi solved the problem. I also ran silicone cooling system hoses with T clamps.

[DavidM]

Yup. Cap has 24 lbs in big letters on it. Then it says 22 lbs in smaller letters. Not sure what that's about. My upper hoses are silicone with your basic screw clamps and the lower hose is a standard rubber hose with screw clamps.

On track, at speed I'll probably see a little over 180 at RA in July. That's with distilled water and water wetter. Bob raced in Texas so it's no surprise the cooling is good.

David

David

[Tristan Smith]

Thanks everyone. I'll do a bit more investigating!