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View Full Version : Headgasket for higher boost

samuel_mkiv
05-22-2009, 03:06 AM
hey guys.
I am going to turbo-konventera my NA to turbo, '
and I wonder what are you useing for headgasket, I want to go a bit higher boost..



// samuel
Mr Ree NZ
05-22-2009, 08:03 AM
Hi there,
What turbo are you thinking of running and how much power are you going for?

Once you have a clear picture of your goals, then you can make better choices on what HG to get.
samuel_mkiv
05-22-2009, 09:04 AM
Hi there,
What turbo are you thinking of running and how much power are you going for?

Once you have a clear picture of your goals, then you can make better choices on what HG to get.

about 400-450whp.
HX35 turbo.
550cc inj.
FMIC
XS-manifold
40mm WG
walbro 255
I am going to refurbish the engine also
DrNick
05-22-2009, 10:20 AM
You could probably get away with just running the 1.3mm HG in that case.

However when you say refurbish the engine, do you mean remove it and recondition it? In that case replace your pistons with stock TT pistons which will lower the compression a bit more, then you can run as much boost as you want :)
samuel_mkiv
05-23-2009, 05:24 AM
You could probably get away with just running the 1.3mm HG in that case.

However when you say refurbish the engine, do you mean remove it and recondition it? In that case replace your pistons with stock TT pistons which will lower the compression a bit more, then you can run as much boost as you want :)

Yes i well remove it and recondition it?
and putt some new pistons rings to.
i have 6 TT pistons,, may it´s not so bad idé with TT pistons
DrNick
05-23-2009, 05:35 AM
Stock TT pistons + 1.3mm head gasket (can use a stock GTE gasket from toyota) will give you around the same compression as a stock TT and you can run 30psi all day :)
That-Guy
06-12-2009, 06:39 PM
putting stock tt pistons in a ge block accompanied with a tt headgasket is supposed to be a bad idea, from what i've read (i believe supra runner or motorheadown made comments about this) it lowers your compressions to way lower than stock gte and messes up the ge quench factor, something i don't completely understand yet. But i remember reading that tt hg with tt pistons in a ge block meant really low 8's for cr which is horrible for low end performance.