Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: acorn decs 2.5 on 14 December 2010, 23:24:33
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Hello from a newbie! Read with intrest post yesterday on cam cover oil leaks. My recently aquired 2.5v6 dumps oil outta them as fast as i fill it.However before i follow the excellent on site info perhaps someone could offer more advice. Both plastic covers on mine are badly warped-so bad last owner had siliconed both inside and outside around them to camoflage problem till too late!- and pointless refitting them. Im told this is common and best cure is to fit metal covers instead of plastic. Great news ..ive got some..off a vectra i believe. Bad news..not sure theyll fit. can anyone advise ? The oil filler is in a different place-on top of cover where mine is offset to passenger side-and looks like it will be covered by plenum And which gasket set do i need .? I note you all say use gen vaux.....help please if you know about this mod. cheers Richard in yorks. :o
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If your covers are deffo warped do NOT fit metal Vec ones. Get a set of decent secondhand covers off one of the breakers here (place wanted ad in "test" section and ask admin to move).......and yes, only use genuine gaskets, "O" rings & sealant as per guide........and don`t forget the breather system
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first of all you need to adress whats causing the pressure build up causing the oil to leak, the cam cover gaskets are the weakest point, so any pressure built up will be let out here first, most likely breathers are blocked, theres a guide in the maintenance section.
as for the covers, known good ones from a breaker will do, just be sure to use genuine gaskets and sealant.
there is issues with metal covers as you have found out, so its easier for future work to refit plastic ones.
good luck :y
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using metal cam covers will cause your crankseal to go should your breathers not be cleaned out/become blocked again. I'd rather do cam gaskets than crank seal
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I've got a pair of straight cam covers here if you need them :y
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If you do wish to use the metal covers I believe that they are fitted with the oil filler on the opposite side to the plastic covers and this does result in some difficulty in replenishing the oil. Use Vectra gaskets to match the covers. Ensure your breathers are kept clear to avoid the problems others have noted with using the metal covers. (Have Vectra owners noted problems with the crank seals blowing out on the V6?)
Alan
Hello from a newbie! Read with intrest post yesterday on cam cover oil leaks. My recently aquired 2.5v6 dumps oil outta them as fast as i fill it.However before i follow the excellent on site info perhaps someone could offer more advice. Both plastic covers on mine are badly warped-so bad last owner had siliconed both inside and outside around them to camoflage problem till too late!- and pointless refitting them. Im told this is common and best cure is to fit metal covers instead of plastic. Great news ..ive got some..off a vectra i believe. Bad news..not sure theyll fit. can anyone advise ? The oil filler is in a different place-on top of cover where mine is offset to passenger side-and looks like it will be covered by plenum And which gasket set do i need .? I note you all say use gen vaux.....help please if you know about this mod. cheers Richard in yorks. :o
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Hello
I do no yet have any leakages in my Y26SE. I never cleaned the breathers. So could you please show the link to the maintenace section or tell me where I find the breathers and how to clean them (before they will be blocked).
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http://www.omegaowners.com/forum/YaBB.pl?num=1285583967 :y
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I have a vectra b gsi aswell as the omega mv6, I fitted metal covers to the omega in the summer this year, I did replace the breather ontop on inlet manifold with brand new, and cleaned the pipes to the breather box. Vectra doesn't suffer with crank seal problems, not sure everyones negativity toward the vectra covers, do you really think vauxhall would spend millions on development to have inherant oil leak problems. Omega covers Do warp, due to the plastic seeing near 100 degrees c, Ive spoken to a few vaux v6 specialists to confirm the warping, I saw it myself after removing them, and having always torqued them correctly, even though they had been removed only once before I replaced. Vauxhall always have stock of the plastic covers, vectra c has plastic covers too, again suffering from leaks, do you honestly think that all owners of platic covers of v6 vauxhalls are incompitent at torqueing up the bolts? Vectra metal covers dont warp as their metal, also the seal is double thickness of omega. They never fill the plugs with oil or allow oil to escape externally. Vauxhall fitted metal covers because of the large inlet manifold so as to support it.
Oil filler ends up next to brake servo, to fill just fit the existing platic filler extension to fill.
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I have a vectra b gsi aswell as the omega mv6, I fitted metal covers to the omega in the summer this year, I did replace the breather ontop on inlet manifold with brand new, and cleaned the pipes to the breather box. Vectra doesn't suffer with crank seal problems, not sure everyones negativity toward the vectra covers, do you really think vauxhall would spend millions on development to have inherant oil leak problems. Omega covers Do warp, due to the plastic seeing near 100 degrees c, Ive spoken to a few vaux v6 specialists to confirm the warping, I saw it myself after removing them, and having always torqued them correctly, even though they had been removed only once before I replaced. Vauxhall always have stock of the plastic covers, vectra c has plastic covers too, again suffering from leaks, do you honestly think that all owners of platic covers of v6 vauxhalls are incompitent at torqueing up the bolts? Vectra metal covers dont warp as their metal, also the seal is double thickness of omega. They never fill the plugs with oil or allow oil to escape externally. Vauxhall fitted metal covers because of the large inlet manifold so as to support it.
Oil filler ends up next to brake servo, to fill just fit the existing platic filler extension to fill.
Surely thats the same when they developed the plastic covers as well. The problems start when people just nip the bolts up when the oil leak starts.
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I have a vectra b gsi aswell as the omega mv6, I fitted metal covers to the omega in the summer this year, I did replace the breather ontop on inlet manifold with brand new, and cleaned the pipes to the breather box. Vectra doesn't suffer with crank seal problems, not sure everyones negativity toward the vectra covers, do you really think vauxhall would spend millions on development to have inherant oil leak problems. Omega covers Do warp, due to the plastic seeing near 100 degrees c, Ive spoken to a few vaux v6 specialists to confirm the warping, I saw it myself after removing them, and having always torqued them correctly, even though they had been removed only once before I replaced. Vauxhall always have stock of the plastic covers, vectra c has plastic covers too, again suffering from leaks, do you honestly think that all owners of platic covers of v6 vauxhalls are incompitent at torqueing up the bolts? Vectra metal covers dont warp as their metal, also the seal is double thickness of omega. They never fill the plugs with oil or allow oil to escape externally. Vauxhall fitted metal covers because of the large inlet manifold so as to support it.
Oil filler ends up next to brake servo, to fill just fit the existing platic filler extension to fill.
Who is this in reply to? Me?
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Posted by: RobG Posted on: Today at 10:10
http://www.omegaowners.com/forum/YaBB.pl?num=1285583967
Thanks for the link RobG. When I open the link I see another two links how to remove the V6 plenum. When I choose the lower one - Appendum to 2.6/3.2 I see three links of which the first one http://www.omegaowners.com/forum/YaBB.pl?num=1285584841 does not work. Actually I get a System Information: "You are not allowed to access this section." Can anyone of you open that link ?
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Posted by: RobG Posted on: Today at 10:10
http://www.omegaowners.com/forum/YaBB.pl?num=1285583967
Thanks for the link RobG. When I open the link I see another two links how to remove the V6 plenum. When I choose the lower one - Appendum to 2.6/3.2 I see three links of which the first one http://www.omegaowners.com/forum/YaBB.pl?num=1285584841 does not work. Actually I get a System Information: "You are not allowed to access this section." Can anyone of you open that link ?
Ill fix, we have improved those guides, its a dead link
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Done, we used to have the 2 guides, but merged them into 1.
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I have seen quite a few Vectras with leaking crank seals.
Thats what gets taken out when the breathers block.
I have also seen very few warped Oemga covers, plenty with hard seals though!
I prefer the Omega covers, they fit, the plug leads fit well and if good gaskets are used they work reliably.
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Re: more v6 rocker leaks!
Reply #13 - Today at 15:12 Done, we used to have the 2 guides, but merged them into 1.
Thanks Jimbob, so this works:
http://www.omegaowners.com/forum/YaBB.pl?num=1285583967
but from there to V6 Plenum Removal does not.
http://www.omegaowners.com/forum/YaBB.pl?num=1285584841
Please help
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Re: more v6 rocker leaks!
Reply #13 - Today at 15:12 Done, we used to have the 2 guides, but merged them into 1.
Thanks Jimbob, so this works:
http://www.omegaowners.com/forum/YaBB.pl?num=1285583967
but from there to V6 Plenum Removal does not.
http://www.omegaowners.com/forum/YaBB.pl?num=1285584841
Please help
it does! (now :-[)
;D ;D :y
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Yes !
http://www.omegaowners.com/forum/YaBB.pl?num=1285583252
Now it works, thanks
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Hello from a newbie! Read with intrest post yesterday on cam cover oil leaks. My recently aquired 2.5v6 dumps oil outta them as fast as i fill it.However before i follow the excellent on site info perhaps someone could offer more advice. Both plastic covers on mine are badly warped-so bad last owner had siliconed both inside and outside around them to camoflage problem till too late!- and pointless refitting them. Im told this is common and best cure is to fit metal covers instead of plastic. Great news ..ive got some..off a vectra i believe. Bad news..not sure theyll fit. can anyone advise ? The oil filler is in a different place-on top of cover where mine is offset to passenger side-and looks like it will be covered by plenum And which gasket set do i need .? I note you all say use gen vaux.....help please if you know about this mod. cheers Richard in yorks. :o
Hi, in answer to your questions, fitting Vectra covers is one of the best mods you can do to your omega v6.
You must use vectra gaskets like thesehttp://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=350315863955&ssPageName=STRK:MEWNX:IT , and fit the covers so that the filler cap is at the rear of the drivers side bank. I find the best thing to use to top the oil up rather than a funnel is a 2litre coke bottle with the bottom cut off. dont worry about the scaremongering regarding blown crankseals, do you really believe that vauxhall fitted crap plastic covers with equally crap gaskets to prevent the crank seal blowing ?No they didnt. they did it to save money. just remember to be meticulously clean when you change the gaskets and use the correct silcone sealant in the appropiate places as per this guide http://www.omegaowners.com/forum/YaBB.pl?num=1152564281 and remember to keep the breather system clean
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Hello from a newbie! Read with intrest post yesterday on cam cover oil leaks. My recently aquired 2.5v6 dumps oil outta them as fast as i fill it.However before i follow the excellent on site info perhaps someone could offer more advice. Both plastic covers on mine are badly warped-so bad last owner had siliconed both inside and outside around them to camoflage problem till too late!- and pointless refitting them. Im told this is common and best cure is to fit metal covers instead of plastic. Great news ..ive got some..off a vectra i believe. Bad news..not sure theyll fit. can anyone advise ? The oil filler is in a different place-on top of cover where mine is offset to passenger side-and looks like it will be covered by plenum And which gasket set do i need .? I note you all say use gen vaux.....help please if you know about this mod. cheers Richard in yorks. :o
Hi, in answer to your questions, fitting Vectra covers is one of the best mods you can do to your omega v6.
You must use vectra gaskets like thesehttp://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=350315863955&ssPageName=STRK:MEWNX:IT , and fit the covers so that the filler cap is at the rear of the drivers side bank. I find the best thing to use to top the oil up rather than a funnel is a 2litre coke bottle with the bottom cut off. dont worry about the scaremongering regarding blown crankseals, do you really believe that vauxhall fitted crap plastic covers with equally crap gaskets to prevent the crank seal blowing ?No they didnt. they did it to save money. just remember to be meticulously clean when you change the gaskets and use the correct silcone sealant in the appropiate places as per this guide http://www.omegaowners.com/forum/YaBB.pl?num=1152564281 and remember to keep the breather system clean
That's exactly how I see it. Why are people so loyal to their crappy plastic? ::)
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I agree, the plastic covers are a constant issue, extremeley good modification. I guess some people are purists. You can pick up a great deal about the V6 by having a nose on the vauxhall vectra owners club - vvoc, they seem a switched on bunch and open to new ideas, including modifications.
How many people use a torque wrench calibrator, probably none! A knackered wrench can apply torque +/- of the desired amount. Hence over or under tightening the covers.
Not ever seen a properly caked oil vapour pipe on a breather system, could only imagine it happens with poor maintainance or short journeys, even the oil you use. Ive always used semi, and more recently fully synth oil.
Definately an oversight with vauxhall with the covers.