How clean is the radiator, i used a 2j gasket with mine and it doesn't over heat
Reviving this thread, I have just finnished my build. Its a ge bottom end and im I'm fairly sure I chose a 2mm 2jz gasket as I thought once my head was welded and drilled, the oil would seal properly! I have been to a track day on the weekend and the car(making 294.6rwkw on 16psi) was overheating badly after 3 laps or so at winton, if i get off the throttle and let it cool for a lap it's fine for another two, it's got a large alloy radiator, ducting for airflow, new water pump, high flow 76deg thermostat etc, I am unfortunately very suspicious of the head gaskets flow design being the culprit. Can anyone confirm this for me? Other than this I am so wrapped with the performance of this motor, torque off boost, early spool and rediculous midrange!!
ke70 20v drifta 18psi = 230rwkw
jzx83 cressida, 14psi = TBA
How clean is the radiator, i used a 2j gasket with mine and it doesn't over heat
The radiator was brand new. That doesn't always mean it was clean I kno... My rad guy can't test alloy rads but ran the hose through and it flows as I would expect and no junk came out. I'm starting to suspect my poor choice to reuse head bolts, inferior gasket quality and possibly a torque issue are to blame 😔 head may be lifting under boost
ke70 20v drifta 18psi = 230rwkw
jzx83 cressida, 14psi = TBA
if you use a 2jzgte head gasket and you had the head mod done it wont be that, it also shouldnt be lifting the head at 16 psi, hell ive been 37psi on a stock 1j head gasket and head studs with a 150 shot of gas on top and never lifted the head.
8.3 et PB 169 MPH PB
Have you checked your radiator cap, a 'soft' cap can cause the temp's to rise quickly.
Also, have you bled the system well? No air-locks etc...
The standard system gets bled like every other one. You need to make a higher point for the water is bottle upside down through an old radiator cap. Fill it up and gravity will bleed the system.
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