I send this question out to everyone.

How much boost are you or have you ran in your engines CVH or ZVH.
And what spec of head gasket and headbolts have you used.

I ask because currently I am having problems holding in 33psi.
So looking for peoples experiance on the subject.

Cheers,
Simon.

 

Running 13psi on a standard CVH

 

33psi is big boys' boost and I've only tried ~2bar boost a few times because of std. C/R. Standard gasket/bolts had no problems, but I haven't done any track days etc. with such boost.

 

Previus engine spec was 8.2:1 on std gasket and bolts with 29psi also no problems.

But upped the CR to 8.8:1 done more work to head and upped boost, it has blowen and deformed all 4 sealing rings.

Looks like I now need a copper head gasket and a wire rung block.

 

have seen run 2.24 on old turbo, want to run 2.5 on the new turbo ,

u got a ext waste gate for me si

 

Long time no speak, seems we are both heading in the same direction!

Thats on a std gasket and bolts?

I do have an external waistegate spare however I have not inspected or rebuilt it yet, so I think you would be better off getting a new one, at least you know it would work and not let you down.
S.

 

did u have a power run on it b4 i blow the gasket

 

It has not been on the rollers since I built the new engine.
I can say that I remember what it felt like with 340bhp on the old engine and the new one feels so so much faster.
On my datalogger(Gotech) it takes 3 secs to run through 3rd gear.
S.

 

sounds good mate u will have to take me out in it

 

im running 11psi on standard kit except airfilter and exhaust

 

3 secs throu 3rd gear



sounds good

 

i've run 2bar so far, and no problems. I need more fuelling, then it's going up.

 

28psi on felpro head gasket and non Stretch head bolts what power are you aiming for running 33psi?

 

21 psi

 

he wants over 400bhp

 

what is it a zvh?

 

si is a zvh using focus rs bottom end . mines a 1600 and im goin for 400bhp +gas

 

my 2.0zvh yesterday made over 400 on 28psi

 

well done

 

400 plus gas on a 1600!! i also run nitrous going to be running 20psi plus 100shot, the kits all in just need to set it. what clutch will you be running.