head gasket thickness for 05 CRD sport

camo · **Posted:** Wed Jun 08, 2011 12:56 am

Hi, I need to take my cylinder head off and I am trying to find out what is the right thickness of the head gasket. I asked my local dealer and they have no idea.
according to the 05 KJ parts fiche there are three sizes
part# Thickness
5072675AB 1.32mm
5072676AB 1.42mm
5072677AB 1.52mm
I understand that the thinner the gasket the higher the compression thus more aggressive performance, but.. what is the trade off? reliability? durability? both? I need to order the gasket and I would like to know first, what is the stock gasket and then if it would be worth changing to a different thickness?
:JEEPIN:

tonycrd · **Posted:** Wed Jun 08, 2011 11:46 am

First, we are talking 1/10 of a millimeter so that won't do nothing for extra boost from your engine.

Normally, the stock gasket is the thinnest one, then after you plane the head you fit a slightly thicker one to compensate for the aluminium you shaved of the warped head.

MACKJ · **Posted:** Wed Jun 08, 2011 11:11 pm

camo wrote:

Hi, I need to take my cylinder head off and I am trying to find out what is the right thickness of the head gasket. I asked my local dealer and they have no idea.
according to the 05 KJ parts fiche there are three sizes
part# Thickness
5072675AB 1.32mm
5072676AB 1.42mm
5072677AB 1.52mm
I understand that the thinner the gasket the higher the compression thus more aggressive performance, but.. what is the trade off? reliability? durability? both? I need to order the gasket and I would like to know first, what is the stock gasket and then if it would be worth changing to a different thickness?
:JEEPIN:

I went with the 1.42mm gasket on my 05 over a year ago. Works fine.
You can ask George from VMSpecialists in the UK for advice.

camo · **Posted:** Wed Jun 08, 2011 11:50 pm

do you have his email? or how can I contact him?

MrMopar64 · **Posted:** Wed Jun 08, 2011 11:51 pm

Which gasket you choose depends on the protrusion of the liner and the piston. Each engine is measured on the assembly line for this tolerance.

Which gasket you need can be determined by looking at the existing part. On the intake side of the gasket there are holes which indicate the thickness, there are up to three holes possible.

It won't change the power of the engine just maintains the proper valve-piston clearance.

Sir Sam · **Posted:** Thu Jun 09, 2011 1:42 am

MrMopar64 wrote:

Which gasket you choose depends on the protrusion of the liner and the piston. Each engine is measured on the assembly line for this tolerance.

Yup, the miller tools include a mounting block and dial indicator to measure the cylinder head protrusion.

riverat · **Joined:** Sat May 14, 2011 4:37 pm **Posts:** 1

There is a portion of the head gasket on the intake side that is exposed. It will have either 0,1, or 2 holes in it.

0 holes = 1.32mm

1 hole = 1.42mm

2 holes = 1.52mm

ATXKJ · **Posted:** Thu Jun 09, 2011 8:13 pm

Howdy riverat - Welcome to LOST - great input on your 1st post.

MACKJ · **Posted:** Thu Jun 09, 2011 10:52 pm

riverat wrote:

There is a portion of the head gasket on the intake side that is exposed. It will have either 0,1, or 2 holes in it.

0 holes = 1.32mm

1 hole = 1.42mm

2 holes = 1.52mm

Yes,
Excellent info. My Jeep dealer didn't even know that. He measured the old gasket at 1.33(obviously compressed) so we went with the 1.42mm.

camo · **Posted:** Thu Jun 09, 2011 11:17 pm

riverat wrote:

There is a portion of the head gasket on the intake side that is exposed. It will have either 0,1, or 2 holes in it.

0 holes = 1.32mm

1 hole = 1.42mm

2 holes = 1.52mm

simplest yet best anwser I've gotten..... thnx, i'll check my hole tomorrow
:ROTFL:

head gasket thickness for 05 CRD sport

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