Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: woolley11 on 05 April 2020, 21:09:18

Title: Head gasket, transfer pipes & thermostat
Post by: woolley11 on 05 April 2020, 21:09:18

Ok my 3.0 MV6 (pre facelift 1999) has been sat in my drive long enough.

It’s done 113k, but will need recommissioning all round + tyres (4) + exhaust+brake discs/pads and then a good service. That’s what I know anyway subject to MOT.

Defo failed headgasket at front cylinder on the left bank as very low compression compared to others.

Think with this spare time I have presently I’m thinking of giving it a go myself to fix. The car maybe not be cost effective to do on face of it but they’re getting quite rare now and far too good to break/scrap.

I’ve done some research and will sort out a torque wrench and torx set sockets etc.

Question - is there any recommended particular part suppliers for the gasket sets, transfer pipes, water pump  thermostat & housing. I’ll also replace the cam belt & tensioner. ?

Wanted good quality ones as don’t want to do it all again in couple of years.

Thanks in advance

Title: Re: Head gasket, transfer pipes & thermostat
Post by: Nick W on 06 April 2020, 15:42:48

An Elring head gasket set will supply all the gaskets you need, for about £80. Less if you shop around.
Pattern thermostat and new housing is easy for under £20.
The transfer tube is GM only, but you don't need to separate it and the thermostat if removing the heads - once the cambelt cover backing plate is removed, they come out together.
Any branded cambelt set will do.
It's probably worth changing the crank oil-seal while you have the belt off, which is less than a tenner from a motor factors.
The thermostat to radiator hose doesn't like being soaked in engine oil - check the engine end doesn't feel soft or swollen. It's another GM only part.


Don't expect any Vauxhall dealer to have any of these parts in stock, or much interest in supplying them!

Title: Re: Head gasket, transfer pipes & thermostat
Post by: woolley11 on 06 April 2020, 19:27:35

Many thanks for the info.

I’ll stock up on my tools and parts then hit the ground running so to speak

Regards

Rob

Title: Re: Head gasket, transfer pipes & thermostat
Post by: woolley11 on 06 April 2020, 19:37:05

Meant to ask - I’ll need new head bolts?

Title: Re: Head gasket, transfer pipes & thermostat
Post by: Nick W on 07 April 2020, 11:05:40

Quote from: woolley11 on 06 April 2020, 19:37:05

Meant to ask - I’ll need new head bolts?

yes, as they're torque to yield. You'll need an angle gauge to use after the torque wrench.

Title: Re: Head gasket, transfer pipes & thermostat
Post by: Smart on 07 April 2020, 19:43:20

Quote from: woolley11 on 05 April 2020, 21:09:18

Question - is there any recommended particular part suppliers for the gasket sets, transfer pipes, water pump  thermostat & housing. I’ll also replace the cam belt & tensioner. ?

What models (producers) pumps and thermostats sold in stores in your area? Dolz, SKF, Hepu, Wahler?