Hi guys what is.the minimum thickness of v3 sti heads?? As how much can be taken off the face after refacing until head is not usable etc

Cheers

 

First question is why do you want to do it? Does it NEED done? Who says so?

The problem with skimming heads, especially on a turbo car is that you will increase the compression ratio, unless you source and use thicker gaskets.

Increase the cr too much, it'll go bang, trust me.

 

Hi there I have found some heads for.sale and have been on rebuilt engine just did nt want to buy
Them and find I could nt use them because they have been refaced to much.
And I'll need to reface them on my rebuild.

 

Standard head height is 127.50mm.
Regrind limit 0.3mm.


Mick

 

Cheers merlin is there a minimum head height at all??

 

From the above figures, I make it 127.2mm.

You repeat that on your build "I'll need to reface them".
But you don't say why?

 

Because I always get a reface when doing head gaskets with aluminum heads due to warping I don't want any problems so I want to do it properly first time.cheers

 

OK............

But unless you go for the thicker gaskets, you are buying trouble.

Why not just have them checked for flat?