displaying posts 1 to 7 of 7

Author Subject: cylinder head options
cully

Seasoned Pro

Location: Cullompton

Registered: 12 Jun 2013

Posts: 1,093

Status: Offline

Post #1
I have a cylinder head that needs a skim!
i understand the head new is 137mm +-0.05 between the cam ladders
the maximum safe skim is to 136.8mm +-0.05 which = 0.2 of materiel can be removed

the head i have is already skimmmed to 136.6mm
is this head toast or is there any options of saving it

seems a shame to scrap a head Sad
Posted 16th Oct 2015 at 16:58
Ben_W

Formerly gpm

Location: Lutterworth

Registered: 01 Sep 2007

Posts: 2,941

Status: Offline

Post #2
Can you get thicker gaskets to allow for the machining???

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Posted 16th Oct 2015 at 17:04
cully

Seasoned Pro

Location: Cullompton

Registered: 12 Jun 2013

Posts: 1,093

Status: Offline

Post #3
std J4RS Metal head gasket from pug is 1.2mm 0209 Z2

J4R lists but are Fibre
1.2mm 0209 N6
1.4mm 0209 T9

the 1.4 will only bring a max safe skim back to std hight

i havent had it skimmed yet and its passed safe skim Wink
Posted 16th Oct 2015 at 17:26
mocinim

Seasoned Pro

Location: The Darkside of bedford :)

Registered: 09 Jan 2015

Posts: 2,307

Status: Offline

Post #4
Speak to pugoneoff think they have something for that

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Posted 16th Oct 2015 at 17:26
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

Status: Offline

Post #5
itll probably be fine with the 1.4mm gasket but you'll have no hope with uprated cams.

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Posted 16th Oct 2015 at 18:20
devere

Senior User

Location: Saxtead

Registered: 16 Dec 2008

Posts: 810

Status: Offline

Post #6
Not trying to hijack but you just measure the head from the face the cam carrier parts seal on, to the face that mates to the block is that correct? Just curious so I can check my spare.
Posted 16th Oct 2015 at 18:27
cully

Seasoned Pro

Location: Cullompton

Registered: 12 Jun 2013

Posts: 1,093

Status: Offline

Post #7
yes cam carrier sealing face to skimmed face

Posted 16th Oct 2015 at 19:16

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