Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: ancient explorer on 03 February 2023, 16:09:15

Title: breather bridge to plenum seal 90467543
Post by: ancient explorer on 03 February 2023, 16:09:15
Hi All,
        I hope you are all well. My magnificent low mileage 2003 2.6 needs the elusive seal 90467543.
Does anyone know where I can obtain one? If they are truly unobtainable, any suggestions as to how
the problem can be overcome? IE: using an o ring with copious amounts of black sealant, or even blanking it off?
        All suggestions gratefully received. and hopefully not the death knell of this beautiful motor.  :)
Title: Re: breather bridge to plenum seal 90467543
Post by: Enceladus on 03 February 2023, 20:31:09
The top-hat seal?
Mostly they can be refitted multiple times? So if yours is not torn or otherwise damaged then clean it and refit.

Some of the members seem to have bought up the available stock several years ago. So if you really need a new one then post up a draft request in the test section. A sympathetic moderator might well move it into the wanted/for-sale section for you.
Title: Re: breather bridge to plenum seal 90467543
Post by: ancient explorer on 04 February 2023, 00:20:38
Hi Enceladus, Thanks for your reply. My circumstance is slightly unusual insofar that I am in western australia visiting grand children at this time, ( 8 hours in advance of uk time) and the omega is at an MOT garage near carlisle uk. I thought it a good idea to have the car collected by a local garage, MOT;t serviced, and returned. Garage stated car in excellent condition, and passed MOT, no problems at all. (so far so good) I was then informed when returning car EML light came on, and they returned car to garage to investigate. I'm now informed, they cannot obtain that elusive seal, and are trying to locate one. They explained it to be a rubber O ring with tabs etc down the sides. I have found this seal online, but always unavailable. If any members have one for sale, please get in touch, cash waiting. If I fail to obtain this seal, can any members advise if there is a way around this problem? As we all know, our omega's are not worth a fortune, but would be tragic to send this one down t'scrapyard  :'( cheers
Title: Re: breather bridge to plenum seal 90467543
Post by: ancient explorer on 04 February 2023, 00:26:28
Just to mention, My 1999 2.5TD owned by me from nearly new, and serviced by me alone, still purrs along beautifully.  :y :)
Title: Re: breather bridge to plenum seal 90467543
Post by: Andy H on 04 February 2023, 02:24:04
Just find an o-ring that fits (to prevent air being drawn into the plenum)

The crotch strap is merely 'nice to have' to minimise air movement between the two halves of the inlet plenum - I don't imagine that any 20+ year old Omega still has a complete seal or that it makes any difference to the smooth running of the engine.

Don't add any mastic, do everything you can to keep the breathers clear.....
Title: Re: breather bridge to plenum seal 90467543
Post by: ancient explorer on 04 February 2023, 03:38:34
Ahhhh Andy H, Just the info I was looking for. Your a Star, not to mention that you have advanced right to the top
of my christmas list.  :y :)
Title: Re: breather bridge to plenum seal 90467543
Post by: JamesV6CDX on 11 February 2023, 07:43:03
In circa 2008 (on one of my cars!) I used the wrist-facing bead of a rubber glove in place of this seal, to make it airtight in an “emergency” when I broke the seal and didn’t have a replacement / needed to drive to work.

I then forgot about it and did about 10k miles with that piece of glove in there!

Not saying you should do that - but there will be a solution / compromise :y
Title: Re: breather bridge to plenum seal 90467543
Post by: BazaJT on 11 February 2023, 08:29:31
You could try the USA where the engine was used in more applications and may still be available from there.
Title: Re: breather bridge to plenum seal 90467543
Post by: ancient explorer on 11 February 2023, 08:41:30
Hi JamesV6CDX and BazaJT,
                       Much obliged for the info, because it seems there must be a way of keeping this lovely old limo on
the road, despite not being able to obtain a rubber ring! Any further helpful suggestions from members, gratefully
accepted. Just noted BazaJT post. Thanks Baza, I am in australia at present, and I am in the process of trying  the GM
dealers here. If successful, I will post details for other members here. Thanks again.  :)
Title: Re: breather bridge to plenum seal 90467543
Post by: Enceladus on 11 February 2023, 15:11:17
Has the top-hat seal actually been removed and examined? If it's not torn then it can be reused.

If needs be there are three seals available here (https://www.ebay.co.uk/itm/225397524491?_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DPERSONAL.TOPIC%26ao%3D1%26asc%3D20220705100511%26meid%3De2885c67fe18428ea4e1e6b97211f48b%26pid%3D101524%26rk%3D1%26rkt%3D1%26itm%3D225397524491%26pmt%3D0%26noa%3D1%26pg%3D2380057%26algv%3DRecentlyViewedItemsV2%26brand%3DGM&_trksid=p2380057.c101524.m146925&_trkparms=pageci%3Aeaac2b50-aa0a-11ed-97f3-ceb769742590%7Cparentrq%3A4088940c1860a0f310e0a82dfffc9d14%7Ciid%3A1). Albeit a bit price gouged.

Title: Re: breather bridge to plenum seal 90467543
Post by: Doctor Gollum on 11 February 2023, 19:21:16
Has the top-hat seal actually been removed and examined? If it's not torn then it can be reused.

If needs be there are three seals available here (https://www.ebay.co.uk/itm/225397524491?_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DPERSONAL.TOPIC%26ao%3D1%26asc%3D20220705100511%26meid%3De2885c67fe18428ea4e1e6b97211f48b%26pid%3D101524%26rk%3D1%26rkt%3D1%26itm%3D225397524491%26pmt%3D0%26noa%3D1%26pg%3D2380057%26algv%3DRecentlyViewedItemsV2%26brand%3DGM&_trksid=p2380057.c101524.m146925&_trkparms=pageci%3Aeaac2b50-aa0a-11ed-97f3-ceb769742590%7Cparentrq%3A4088940c1860a0f310e0a82dfffc9d14%7Ciid%3A1). Albeit a bit price gouged.
You can winge all you like about the cost, but they're no longer available from GM.
Title: Re: breather bridge to plenum seal 90467543
Post by: Enceladus on 12 February 2023, 04:00:19
Who's winging? It's not my car. If it were mine and £20 gets it going again, then I know what I'd do.
Title: Re: breather bridge to plenum seal 90467543
Post by: Doctor Gollum on 12 February 2023, 11:06:16
In which case why comment on the price ???
Title: Re: breather bridge to plenum seal 90467543
Post by: ancient explorer on 13 February 2023, 01:36:45
Hi Enceladus,
                  Fantastic, much thanks for your post. The elusive seal purchased :D One beautiful 2.6 survives and will
soon be cruising the public highway again :) Many thanks again. :y