MHG SIZE

[tokiMK3]

I'm about to get my head out of the machine shop, getting it decked. They said that they took off BARELY off(.0006)!! But my problem is this car has a MHG from the previous owner, how do I check to see the size that the old MHG? should I use the same size?

 

[IJ.]

Measure the Block from the Crank saddles to the deck and the Head from it's surface to the cam cover surface.

You then subtract these from 116mm for a stock head and 198mm (I have to double check this when my block comes back from the shop)

The difference is added to 1.37mm if you want to retain the stock compression ratio.

ie: 10 thou cut from both block and head would need a 0.073" hg so a 2mm one would do it.

 

[tokiMK3]

but my block is not out, just my head. Is there a way to look at the MHG and tell?

 

[IJ.]

Measure it?

 

[tokiMK3]

so I should measure it and get the same one? But does the MHG get thinner from the torque?

 

[IJ.]

MHG's don't compress.