Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Diamond Black Geezer on 02 October 2014, 10:17:02

Title: Manifold > Cat Gasket Types - V6??
Post by: Diamond Black Geezer on 02 October 2014, 10:17:02

Just noticed on another thread that it might be an idea to change the manifold to cat gaskets on the V6. They look in excellent shape, but that's the problem - the shape.

Mine are circular but showing on the (online) EPC are normal 'gasket shaped' Anyone know why? Part numbers listed is

90499289

Cheers!

Title: Re: Manifold > Cat Gasket Types - V6??
Post by: Marks DTM Calib on 02 October 2014, 10:18:10

They should be circular and genuine ones are a flaky type material.

Title: Re: Manifold > Cat Gasket Types - V6??
Post by: Diamond Black Geezer on 02 October 2014, 10:19:21

Thread here... http://www.omegaowners.com/forum/index.php?topic=126341.0

on his apparently the aftermarket exhaust came with 'O' ring type gaskets... so has mine been replaced? Convinced mine are the original VX cats, though. Plot thickens!

Title: Re: Manifold > Cat Gasket Types - V6??
Post by: Diamond Black Geezer on 02 October 2014, 10:24:45

(http://i297.photobucket.com/albums/mm240/leflemmy/exhaust2_zps3ef75995.jpg)

But I'm trusting Marks DTM and my own eyes, as the ones fitted are definitely round!!  :D

Title: Re: Manifold > Cat Gasket Types - V6??
Post by: Marks DTM Calib on 02 October 2014, 10:46:40

Never in all my days of titing about with Omegas have I seen a shaped gasket such as that shows on a V6 be it 2.5 through to 3.2 from early C25Xe to Y32SE.

Title: Re: Manifold > Cat Gasket Types - V6??
Post by: Webby the Bear on 02 October 2014, 11:06:52

I went in to Vx and ordered that gasket.... the guy showed me the photo. I said ''no, the one I want is round'' and he said ''ah, I remember now that the drawing on here is wrong''.

order it and it should be the round flaky one that mark mentioned :)

HTH

Title: Re: Manifold > Cat Gasket Types - V6??
Post by: Diamond Black Geezer on 02 October 2014, 11:14:41

Quote from: Webby the Bear on 02 October 2014, 11:06:52

I went in to Vx and ordered that gasket.... the guy showed me the photo. I said ''no, the one I want is round'' and he said ''ah, I remember now that the drawing on here is wrong''.

order it and it should be the round flaky one that mark mentioned :)

HTH

 :D :D :D :D :D :D :D :D :D :D

What can I say? Only that I repeat my statement - I trust Marks DTM (and Mr The Bear) more than Vauxhall!!!  :y

Title: Re: Manifold > Cat Gasket Types - V6??
Post by: Nick W on 02 October 2014, 11:18:10

You can get pattern ones of that shape that work. I think they're also used on certain Astras.
I have one of each type on both sides of mine(3.0l engine and pipes with 3.2 manifolds), as they were acquired from different places.

Title: Re: Manifold > Cat Gasket Types - V6??
Post by: Marks DTM Calib on 02 October 2014, 11:38:04

Yes, not had any issues with pattern gaskets either.

In fact, I have reused them when they are in good condition and similarly had no issues.  :y

The key is making sure you tighten the nuts up evenly.  :y

Title: Re: Manifold > Cat Gasket Types - V6??
Post by: Diamond Black Geezer on 02 October 2014, 11:52:22

Quote from: Marks DTM Calib on 02 October 2014, 11:38:04

Yes, not had any issues with pattern gaskets either.

In fact, I have reused them when they are in good condition and similarly had no issues.  :y

The key is making sure you tighten the nuts up evenly.  :y

I'm having that tattooed on the inside of my eyelids so I don't forget!!! Cheers Mr Calib  :y