5150DSM
Supporting VIP
- 856
- 3
- Jan 5, 2004
-
Sacramento,
California
So I'm back with more overheating issues. After this incident... http://www.dsmtuners.com/forums/cyl...439122-overheating-poor-idle-head-gasket.html
I had my head resurfaced to an RA of 40 along with the block deck. I installed a Fel-Pro Permatorque HG (dry) with ARP studs. I torqued the head in three steps to 90 and off I went. For the last three months the car has been running great, lots of power at 22psi, fun and reliable.
The other day my coolant feed hose to the turbo split and blew a bunch of coolant, it got hot but not real hot before I shut it down. Replaced the hose and the coolant and burped the system. Car still ran hot and started using coolant. Had the same hot hose/cold hose symptom so I replaced the thermostat, filled and burped the system, car still ran hot (see overheating). I fill the reservoir and the radiator and by the time I drive 5-6 miles the car starts getting hot, running the heat (great in a Sacramento summer) controls it to some degree but after a while it cascades into full overheating again. Whe I check, the reservoir is nearly emply and the rest of the system is down anywhere from a cup or two to a quart or so.
I ran a pressure test at 15psi, left the tester pressurized for half an hour without loosing any pressure whatsoever. I ran two combustion leak tests (blue fluid) that showed no combustion gasses in the cooling system. I haven't spotted any external leaks and don't see any signs of an internal leak... plugs are clean, piston tops are dry, no steam from the exhaust, no mixing into the oil, coolant doesn't shoot out of the neck when I start the car, and so on.
I'm fu(king stumped.
Anyone who has an idea, please contribute, I'll try just about anything at this point.
I had my head resurfaced to an RA of 40 along with the block deck. I installed a Fel-Pro Permatorque HG (dry) with ARP studs. I torqued the head in three steps to 90 and off I went. For the last three months the car has been running great, lots of power at 22psi, fun and reliable.
The other day my coolant feed hose to the turbo split and blew a bunch of coolant, it got hot but not real hot before I shut it down. Replaced the hose and the coolant and burped the system. Car still ran hot and started using coolant. Had the same hot hose/cold hose symptom so I replaced the thermostat, filled and burped the system, car still ran hot (see overheating). I fill the reservoir and the radiator and by the time I drive 5-6 miles the car starts getting hot, running the heat (great in a Sacramento summer) controls it to some degree but after a while it cascades into full overheating again. Whe I check, the reservoir is nearly emply and the rest of the system is down anywhere from a cup or two to a quart or so.
I ran a pressure test at 15psi, left the tester pressurized for half an hour without loosing any pressure whatsoever. I ran two combustion leak tests (blue fluid) that showed no combustion gasses in the cooling system. I haven't spotted any external leaks and don't see any signs of an internal leak... plugs are clean, piston tops are dry, no steam from the exhaust, no mixing into the oil, coolant doesn't shoot out of the neck when I start the car, and so on.
I'm fu(king stumped.
Anyone who has an idea, please contribute, I'll try just about anything at this point.