M20 2.5 head height.

Post Tue Feb 07, 2006 1:13 pm

Does anyone know what the minimum height for skimming is for a M20 2.5 head?
(From rocker face to head gasket face).
I just want to know so I can save the time stripping a head if itÃƒ”š's already passed tolerance.
I would appreciate any help on the matter.
Cheers
Pav

Post Tue Feb 07, 2006 1:39 pm

The limit is 124.7mm

Post Tue Feb 07, 2006 9:34 pm

Adammcf wrote:The limit is 124.7mm

That figure looks familiar.

Post Fri Feb 24, 2006 2:41 pm

Thanks for the info guys.

Since then i have had my spare head crack tested, skimmed and new exhaust guides. Now its ready for a 284/272 Shrick cam!

The head height is now 124.85mm, my question is whether i need a standard head gasket or an extra thick one?
Whats the limit before you need a extra thick one?

Much apprieciated if anyone can help.

Cheers

Pav

Post Fri Feb 24, 2006 10:36 pm

325zimmer wrote:Thanks for the info guys.

Since then i have had my spare head crack tested, skimmed and new exhaust guides. Now its ready for a 284/272 Shrick cam!

The head height is now 124.85mm, my question is whether i need a standard head gasket or an extra thick one?
Whats the limit before you need a extra thick one?

Much apprieciated if anyone can help.

Cheers

Pav

124.7mm apparently.

Post Fri Feb 24, 2006 10:49 pm

Just out of interest - where would you buy a thicker head gasket from?

Post Sat Feb 25, 2006 8:20 am

Cheers guys

I'm pretty sure you can get a thicker head gasket from BM's and from GSF.