87mm head gasket in 86.5mm

Reply Subscribe

Thread Tools

Search this Thread

Nov 12, 2018 | 07:30 AM

babaz7

Thread Starter

Evolved Member

Joined: Aug 2011

Posts: 556

Likes: 1

From: somewhere

87mm head gasket in 86.5mm

My cylinder bore is 86.5mm ,the only other option I have is a cosworth 87mm head gasket, other wise I'll have to wait 4 weeks, so the question is will it work or should I wait?

Nov 12, 2018 | 08:23 AM

LetsGetThisDone

EvoM Guru

iTrader: (1)

Joined: Oct 2013

Posts: 15,973

Likes: 1,629

From: Las Vegas

Are you using a 4g64 or a 4g63 block?

Cometic makes 87mm and 87.5mm bore head gaslets that would work fine, but if you have a 4g63 block bored to 86.5mm, it's pretty much junk.

Nov 12, 2018 | 04:34 PM

babaz7

Thread Starter

Evolved Member

Joined: Aug 2011

Posts: 556

Likes: 1

From: somewhere

Quote:

Originally Posted by letsgetthisdone

Are you using a 4g64 or a 4g63 block?

Cometic makes 87mm and 87.5mm bore head gaslets that would work fine, but if you have a 4g63 block bored to 86.5mm, it's pretty much junk.

its a 4g64 block but the gasket is cosworth ,it wont have any issues right or should I wait almost a month for the 86.5mm ones?

Nov 12, 2018 | 09:17 PM

LetsGetThisDone

EvoM Guru

iTrader: (1)

Joined: Oct 2013

Posts: 15,973

Likes: 1,629

From: Las Vegas

It'll be fine. It's actually better for the gasket bore to be bigger than the actual bore.

Nov 12, 2018 | 11:08 PM

babaz7

Thread Starter

Evolved Member

Joined: Aug 2011

Posts: 556

Likes: 1

From: somewhere

Quote:

Originally Posted by letsgetthisdone

It'll be fine. It's actually better for the gasket bore to be bigger than the actual bore.

no leakage or over heating issues?

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last