My compression test

[northerner]

might be moisture in the exhaust

[PukkaSilvia]

Why did you rebuild it?

[alundra]

Thanks guys for your attention.
Head gasket blew after a track session.

[PukkaSilvia]

Where did it blow?


Is the smoke oil or water. Put some tissue over the tailpipe and then check the residue

[alundra]

Between 3rd and 4th cylinder exhaust side, in the thickness of the headgasket.

[s13eater]

mine went on number 3 cylinder, but i think the head was'nt true.

[umpkin]

both enigines ive had have blow 3rd to 4th must be a weakness, also on my thread martin said that No.3 is the hottest of the cylinders, so more prone to detonation, rather than blowing hole in piston, it prolly eats away at the headgasket instead.

[alundra]

So, how do you guys run on >200bhp, any "cooling advice"?

Yes turbo area create an hot spot between 3rd and 4th cylinder.

[PukkaSilvia]

yes 3 is the hottest
You need to drive it a bit more incase it is just fluids in the exhaust. If not i would say its fuct



Check that residue out and determine if it is definately water or oil. If it doesnt clear and you say the turbo is fine then that head is going to have to come back off.
180 degrees out
You should fit a 13 row oil cooler if you want to use it on the track, Also foam fill the fuel tank or never let it go below 1/4 of a tank

[30psi]

Originally Posted by umpkin

martin said that No.3 is the hottest of the cylinders, so more prone to detonation, rather than blowing hole in piston, it prolly eats away at the headgasket instead.

Yeah I've noticed on the ET and DET that number 3 gets buggered the most, not sure if its heat, difference in compression or fueling or whatever that causes this if I'm honest