qkgixxer

Okay so the fabulous overheating prob. Heres what it is and yes i did search the threads, but nothing found on this issue. So here it is..
89 non vetec b20a5 evo3 16 g turbo so forth so on...
three weeks ago I replaced the head gasket due to about 30+lbs to number three... the gasket looks interesting.
car ran fine for about two days when a rear coolant line cracked. Replaced and refilled, bled the system yadyayaa....
Took for a tune and we started with 143 whp sweet huh
anyway while on the dyno at 18lbs of boost the radiator cap, nowhere else began blowing coolant. The car never ran hot but we shut it down and the car continued to hiss form the cap. We stopped at 300 whp and packed it up. Brought the car home and the damn thing began to blow coolant from the cap pulling form the trailer. Again the car never runs hot. It did great on the dyno no white smoke, no coolant in the oil, plugs are perfect, no tuning problems while it went on. Any ideals are greatly appreciated as this one is not condusive to any other problem ive found on here......
ARP main stud for head stud so could it really be just lifting the head and resealing????????
I since replaced the thermostat with a 180 and refilled and while idling it hasnt thus far continued its issue, however Id like some thoughts on this one.. It started the issue under boost and continued while just idling . oh yeah cap and radiator are new

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B20A5
evo3 16g turbo all mods
and who the hell knows what else

yes it did 300frwhp at 18lbs and no nitrous, and no you cant mail order it.

qkgixxer

you guys rock thanks for the help so far

__________________
B20A5
evo3 16g turbo all mods
and who the hell knows what else

yes it did 300frwhp at 18lbs and no nitrous, and no you cant mail order it.

D_Ludesions

Try to re-torque the head studs and while your at it make sure your head isn't warped.

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"When you start down the slippery slope of actually adding HP to your engine, it is like trying crack for the first time. The added rush feels awesome, but soon enough you will get used to that dosage, and the amount must be upped. " - author unknown

qkgixxer

i thank you for your time i hope its good as far as the head im tired of messing with it now...

__________________
B20A5
evo3 16g turbo all mods
and who the hell knows what else

yes it did 300frwhp at 18lbs and no nitrous, and no you cant mail order it.

keahistight

sounds like your block/head is warped to me. That's all I can think of ...

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93 NSX, 07 G35S, 08 Tahoe LT, 07' YZF-R1, 10' Ducati 1098s, 04 Waverunner XLT 800, 07 Reinell 203
H22a4 turbo 300+ club: http://www.cardomain.com/id/keahistight