TD42 head gasket .........what size ?
Submitted: Thursday, Mar 13, 2003 at 15:03
ThreadID:
3830
Views:
8523
Replies:
5
FollowUps:
6
This Thread has been Archived
IAMGQ
Hi All,
I have asked Nissan dealer to get a head gasket for my GQ TD42 93.
They ask me what size do I want as they showed three different thickness (1.15, 1.2, 1.25) and quote $92.8 each
I was quite hesitate to choose as I have no idea which one will suit.
Then, a senior manager suggested me to get the thickest one 1.25 considering the age of my car.
At the end I didn't choose as I was still not yet confirmed.
Why does
old car need a thicker gasket comparing to younger car? Why don't they just use same thickness of all gasket ?
Anyone can help?
Reply By: sensei - Friday, Mar 14, 2003 at 00:54
Friday, Mar 14, 2003 at 00:54
You will need to measure the head thinkness to be sure it has not been shaved before hand.
With the head upside down measure where the head gasket would normally
seat and down to the valves with a depth mic. You may also need to measure the depth from the top of
the block to the top of the piston at TDC. With both of these measurements you should be able to match head gasket thinkness from the manual. You dont really want to alter the compression ratio to much one way or the other. When a thicker gasket is used it would normally mean that the head has been shaved to keep the ratio STD or as close as you can.
A good WS manual or someone with a WS manual would be in order i think just to make sure you get it right first time.
AnswerID:
15163