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Author Topic: N/S exhaust manifold gasket (2.5 V6)  (Read 5849 times)

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Webby the Bear

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N/S exhaust manifold gasket (2.5 V6)
« on: 19 July 2021, 21:58:10 »
Hi gays, I mean guys. hope ur all well and staying safe 😎😃

I have tonight finished removing the n/s exhaust manifold to replace the nackered gasket and finally get rid of the exhaust noise I’ve had for ages now.

Firstly what a knob of a job this was. I’m very much not looking forward to putting it all back together 🤮🤮🤮🤣🤣🤣

Anyway rang Vauxhall earlier and the gasket is no longer available, though I was able to order 2 x manifold to down pipe nuts lol

So can anyone help me out and sell me a gasket or can you give me a link to a good online equivalent? I understand the layered steel ones are the way to go. I’d previously fitted a graphite one which didn’t last. But hey ho we live n learn. Cheers oof brothers
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Doctor Gollum

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #1 on: 19 July 2021, 23:27:50 »
Victor Reinz would be a good starting point ;)
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Webby the Bear

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #2 on: 20 July 2021, 10:17:57 »
Thanks DG but need something this week. U got a link to a UK supplier?
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Nick W

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #3 on: 20 July 2021, 10:46:59 »
Quote from: Webby the Bear on 20 July 2021, 10:17:57
Thanks DG but need something this week. U got a link to a UK supplier?


Lots of them on Ebay, just search for Vauxhall V6 exhaust gasket.  The later multi layer steel ones for non EGR manifolds are a lot more expensive.
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Webby the Bear

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #4 on: 20 July 2021, 13:30:15 »
Thanks guys. Found an FAI steel gasket but for 3.2. Can I use this or they different? Certainly looks the same 👍
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Nick W

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #5 on: 20 July 2021, 13:39:48 »
Quote from: Webby the Bear on 20 July 2021, 13:30:15
Thanks guys. Found an FAI steel gasket but for 3.2. Can I use this or they different? Certainly looks the same 👍


Yes, but it will blank off the EGR ports in the head. That's not necessarily a bad thing.


Now would be a good time to upgrade to the later manifolds.....
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Webby the Bear

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #6 on: 20 July 2021, 16:09:43 »
Thanks Nick. Great idea but I just don’t have any time. Also motivation is wavering with the thought of not being able to run the omega in 5 years with E10 coming in 😩😩😩😩
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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #7 on: 20 July 2021, 17:00:33 »
Why not? upgrade the rubbery parts of the system and get over it :y

The bulk of the fuel system on the Omega is hardlined, so Ethanol shouldn't affect it significantly, and the bits that will be affected are perishable anyway, so on a 25 year old car may well require imminent replacement. ;)
« Last Edit: 20 July 2021, 17:02:51 by Doctor Gollum »
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dave the builder

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #8 on: 20 July 2021, 17:08:00 »
I thought E10 only affected the 2,2 direct injection  :-\

18+ year old rubber parts need inspecting and/or replacing anyway

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Webby the Bear

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #9 on: 20 July 2021, 18:21:26 »
Has anyone run their omega on it? Would be curious to know about how it runs 🤔
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Nick W

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #10 on: 20 July 2021, 19:58:41 »
Quote from: Webby the Bear on 20 July 2021, 18:21:26
Has anyone run their omega on it? Would be curious to know about how it runs 🤔


it's still mostly petrol, so unless you drive your car on the rev limiter all the time you're unlikely to notice a difference. Until the rubber parts in the fuel system fail. But that's one of the downsides of running old vehicles
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STEMO

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #11 on: 20 July 2021, 20:00:39 »
Quote from: Webby the Bear on 20 July 2021, 18:21:26
Has anyone run their omega on it? Would be curious to know about how it runs 🤔
Doesn't matter. If it's lumpy at idle and is slow to accelerate, you wouldn't notice any difference.  ;D
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Webby the Bear

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #12 on: 20 July 2021, 20:12:54 »
😂😂😂😂😂😂😂😂😂 true that Steve 🤣🤣🤣🤣🤣🤣
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Andy B

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #13 on: 20 July 2021, 22:42:26 »
Quote from: Webby the Bear on 20 July 2021, 18:21:26
Has anyone run their omega on it? Would be curious to know about how it runs 🤔

Wasn't it E10 that Nige/Entwood to have problems with in French France while towing. IIRC he'd get the management light on while over there
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Webby the Bear

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Re: N/S exhaust manifold gasket (2.5 V6)
« Reply #14 on: 20 July 2021, 23:14:30 »
Maybe EML on for knock sensor detecting a bit of predetonation?

I wonder if there’ll be an additive for older cars to use with it?
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