weird overheating problem
Thread Starter
Launching!
Joined: Apr 2011
Posts: 253
Likes: 1
weird overheating problem We did a cam swap about a month ago on a buddies car. TR224, SLP oil pump, LS2 chain, 160* thermostat, dyno tuned.
The car runs great. You can drive it for hours without a problem. When he gets the car home and turns it off in the driveway, he can hear it boiling over into the overflow tank. The temp gauge never shows temps overheating. After it warms up, it stays right around 200*.
Fans come on normally, it isn't losing any coolant, and we've made sure to try bleeding out the cooling system a few times to rule out air in the system. He had the radiator flushed at a radiator shop and it was clear. We also swapped out the 160*thermostat stat with a new stock temp stat.
We were thinking a possible head gasket but it was odd this started right after the cam swap. It's a 2001 Z28 with only 45,000 miles.
Anyone have any ideas?
The car runs great. You can drive it for hours without a problem. When he gets the car home and turns it off in the driveway, he can hear it boiling over into the overflow tank. The temp gauge never shows temps overheating. After it warms up, it stays right around 200*.
Fans come on normally, it isn't losing any coolant, and we've made sure to try bleeding out the cooling system a few times to rule out air in the system. He had the radiator flushed at a radiator shop and it was clear. We also swapped out the 160*thermostat stat with a new stock temp stat.
We were thinking a possible head gasket but it was odd this started right after the cam swap. It's a 2001 Z28 with only 45,000 miles.
Anyone have any ideas?
Thread Starter
Launching!
Joined: Apr 2011
Posts: 253
Likes: 1
So after messing with this car, we finally decided to pull the heads. We found a very small area near the cylinder and a coolant passage that was slightly distorted. The valves and piston was also cleaner than the other cylinders from being washed down with coolant.
I'm just glad we finally figured it out, even though we suspected that was the problem.
He got a stock set of 799's he's putting on. They're just getting cleaned up a bit and milled to ensure a flat surface.
I'm just glad we finally figured it out, even though we suspected that was the problem.
He got a stock set of 799's he's putting on. They're just getting cleaned up a bit and milled to ensure a flat surface.
