Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Craig_R on 22 March 2007, 14:24:10
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Hiya Chaps wonder is anyone can help here
After Chatting to James at Tunnie Cambelt Party I asked him about cleaning the very back breather pipe that gos to the sump
He said about removing the Exhaust heat Shield to get at it
So After Getting Hold Of a Torx Socket today i though i would have a bash.
Got the Heat Shield off and to my Horror i have found why my Car is Soooo Loud i thought it was the Exhaust
The Exhaust i think its the Manifold is Cracked a huge crack and i could feel the Gases coming out no wonder its soooo bloody loud and the MPG has been iffy
(http://www.firedragon.com/~swamp/crack.jpg)
Now i will need a replacement, But the onething that is geting on my nervous is i think i have been had with my Head Gasket Change the Mech Guy Should of spotted this i dont think he even stripped my car down now :(
Craig
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Oh thing that worrys me is finding another one of the same kind as most 2 litres i have seen dont have the secondery air injector, it was not on tunnie's but his was a 2.2 and i dont think james 2 litre had it either, I am starting to think things are not good.
Would anyone have an idea where on earth i can get a spare from ?
Craig
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Doesn't look good. Don't worry if you can't find one with secondary air injection. Assuming the rest of the manifold is the same you could ditch the air injection and it won't make a bit of difference.
Kevin
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All the X20Xe's have them......even the ones in the Vectra....
Try for a second hand one as it will be nicely seasoned....then get it nice and flat before fitting
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Will an older prefacelift one fit if i cant get a facelift one there are far more Prefacelifts kicking about in Scrapyards
Get it nice and Flat you mean have it skimmed Mark ?
I spoke to the mech guy and he just said they all have them its a comon fault to have hairline fractures, Its not hairline Oh it must of gotten Worse then, Muppet Total Muppet ill not trust a mechcanic again in a hurry.
TUNNIE alleast we now know why is was sooo noisey lol
Craig
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Yeh, pre-facelift is the same....has James got a spare...
As for flat....I use a belt sander to flatten them as they dont need to be head surface flat....
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To make sourcing easier....here is a list of the cars and engines which the part is used on (its pretty dam common!)
Calibra 1989-97 X20XEV engine.
Cavalier 3 1989-1995 X20XEV engine.
Vectra B 1996-01 X18XE engine with chassis number from W1000001 or from W500001 up to W5276825 or from W7000001 or from XL000001 and X20XEV engine with chassis number W1000001 up to W199999 or from W5000001 up to W5276825 or from W7000001 up to W7999999.
Omega B 1994-03 X20XEV engine.
Frontera A 1992-98 X22XE engine with chassis number up to TV899999.
Sintra 1997-99 X22XE engine with chassis number up to 31031836.
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Oh thing that worrys me is finding another one of the same kind as most 2 litres i have seen dont have the secondery air injector, it was not on tunnie's but his was a 2.2 and i dont think james 2 litre had it either, I am starting to think things are not good.
Would anyone have an idea where on earth i can get a spare from ?
Craig
Assuming the facelift and pre-facelift use the same Manifold the pipe which connects on the side should be on most 2.0's 16v.
I know of one 94M and my 97P both have the same rail bolted to the side of the manifold if this is what your meaning.
Maybe getting confused but thought I should mention.
Try sourcing one from your local scrappers, got an intact one for the 94M for about £20.
Good luck in your search
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Fantastic Mark Thankyou ever so much, life just got so much nicer lol Phewwww
Ill have to have a look down the local scrapper then give me something to do on my day off
is this a common fault as the mechanic told me or is he speaking out of his backside.
Craig
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It's not a difficult job,
Unfortunately I don't have any 2.0 spares anymore
If you aren't confident I'm sure one of us can help you change it
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Have a look at VSC's ebay shop, Im sure they had some new ones at a resaonable price about a month ago....
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Craig i'd be happy to go though the scrappy back home but my sodding annoying booooooring project is almost out of the way. Week or 2 and i'll take a look down mine.
Last time i was there, had some fairly intact 2.0 engines :y
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Craig i'd be happy to go though the scrappy back home but my sodding annoying booooooring project is almost out of the way. Week or 2 and i'll take a look down mine.
Last time i was there, had some fairly intact 2.0 engines :y
last time i was there, most of the omegas were gone :'(
have you nicked them all?
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Craig i'd be happy to go though the scrappy back home but my sodding annoying booooooring project is almost out of the way. Week or 2 and i'll take a look down mine.
Last time i was there, had some fairly intact 2.0 engines :y
last time i was there, most of the omegas were gone :'(
have you nicked them all?
Shhhh ;)
Mother tunnie has not seen the back garden yet! ;D
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When I had the Head Gasket changed on my Vectra (X20XEV) engine, the mechanic left the manifold attached to the head and unbolted the downpipes, was far simpler than removing the manifold from the block.
Maybe that's why it looks as if th manifold hadn't been disturbed on yours?
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When I had the Head Gasket changed on my Vectra (X20XEV) engine, the mechanic left the manifold attached to the head and unbolted the downpipes, was far simpler than removing the manifold from the block.
Maybe that's why it looks as if th manifold hadn't been disturbed on yours?
That is the way i usually take the heads off but you still have to take off the manifold when you get the head skimmed, if it needs it, as the surfacing machine will not take the complete unit. ;)
8-)
DaveL
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Yeh, the head wasn't skimmed because the Hg was just split and allowing oil out, the waterways weren't affected and the head was still true.
It's now 20K further on and leak free.
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When I had the Head Gasket changed on my Vectra (X20XEV) engine, the mechanic left the manifold attached to the head and unbolted the downpipes, was far simpler than removing the manifold from the block.
Maybe that's why it looks as if th manifold hadn't been disturbed on yours?
As far as I recall from when I last removed the cyl head on my veccy X20XEV, you have to remove the exhaust manifold as it straddles part of the engine block. To leave it on the head and then refit would cause potential problems with the exhaust manifold gasket later on.
Hairline cracks are common and they can develop quickly into a large crack depending on how hot you run your motor. You will find many will have hairline cracks as does mine, I thknk you were just unlucky it got worse on yours.
Good luck! :y
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To make sourcing easier....here is a list of the cars and engines which the part is used on (its pretty dam common!)
Calibra 1989-97 X20XEV engine.
Cavalier 3 1989-1995 X20XEV engine.
Vectra B 1996-01 X18XE engine with chassis number from W1000001 or from W500001 up to W5276825 or from W7000001 or from XL000001 and X20XEV engine with chassis number W1000001 up to W199999 or from W5000001 up to W5276825 or from W7000001 up to W7999999.
Omega B 1994-03 X20XEV engine.
Frontera A 1992-98 X22XE engine with chassis number up to TV899999.
Sintra 1997-99 X22XE engine with chassis number up to 31031836.
Just a quick question, i too have a crack in the exaust manifold (Doc says it will clear up with some cream ;D ;D), will a 2.0 manifold fit a 2.2?
The car chassis number is WOLOVBM35Y1131721.
i was going to weld the crack but if i can get a replacement cheaply then i will not bother. :)
8-)
DaveL
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......i was going to weld the crack but if i can get a replacement cheaply then i will not bother. :)
8-)
DaveL
At the risk of 'teaching Granny to suck eggs' :-? if you do make sure you get the rest of the manifold nice & hot first or it'll tend to crack nicely along side your weld.
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......i was going to weld the crack but if i can get a replacement cheaply then i will not bother. :)
8-)
DaveL
At the risk of 'teaching Granny to suck eggs' :-? if you do make sure you get the rest of the manifold nice & hot first or it'll tend to crack nicely along side your weld.
i usually take the manifold off, put into a potters oven to get really warm. Use a very high carbon welding stick and then over the next 24 hours, after putting back into the oven, let the manifold cool down with the oven. No new cracks found on any of my repairs but i know what you mean Andy B. :)
Rather than all this paff i would sooner just change the manifold if a straight swap was possible, my question still stands. :)
8-)
DaveL
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There are two types of manifolds for X20XEV engine : One http://cgi.ebay.co.uk/VAUXHALL-EXHAUST-MANIFOLD-VECTRA-CALIBRA-OMEGA-X20XEV_W0QQitemZ330144173741QQihZ014QQcategoryZ10404QQtcZphotoQQcmdZViewItem
with holes for air fan pipe (most Omegas) and second http://cgi.ebay.co.uk/VAUXHALL-EXHAUST-MANIFOLD-24420438-VECTRA-ASTRA-X20XEV_W0QQitemZ330153747215QQihZ014QQcategoryZ10404QQtcZphotoQQcmdZViewItem
without it (like at my Vectra 99)
Is it OK if I will replace the one with holes with the one without them? I will have to get rid of the pump, but I don't know if it's OK for the engine and what was changed in last X20XEV engines that GM decided not to install the air pump. I know that this pump is to supply more air when the engine is cold to allow the rest of fumes to burn and this way it protects the catalytic converter.
So was there anything changed in engines without the fan and is it completely ok for the engine to install new manifold without holes?
How do you protect the bolts from wrenching off the bolts when unscrewing, as they tend to crack and small piece is left in the engine head... I was advised to use a rust remover but I don't have any good one.
I can buy new manifold for [ch321]85 but I'm afraid that this might be a cheap no-branded one that will crack after a year... Can you please advise where I can buy a good quality manifold?