2002RamAir

iTrader: (19)

Hey all, I am running a dual core AFCO radiator and was running a 16lb cap. It was good for about 500miles then I started to experience major overheating issues. Coolant would just boil and radiator will only stay close to half full. I started to inspect everything tonight and found this. Should I go up to a 20lb cap or do I possibly have other issues? The car is a single turbo car putting down roughly 600rwhp. Thanks

Old Geezer

iTrader: (3)

2 suggestions:
1. Pressure test the cap.
2. Check for head gaskets being toast.

2002RamAir

iTrader: (19)

What is the best way to check the gaskets?

The Alchemist

iTrader: (19)

Check you oil for water. Grab a clear plastic container like a gallon milk or soda bottle and drain a little bit of oil and then let it sit. Any moisture will collect at the bottom. Also check your overflow tank for signs of oil on top.
The other sign of a blown head gasket is lots of smoke, which is actually steam in your exhaust.

MIGHTYMOUSE

iTrader: (59)

put the stock cap on it and drive.

2002RamAir

iTrader: (19)

It appeared to be the cap. Found my factory cap, stuck it on, let it idle for 15min and it held at 190!