Omega Owners Forum - Off with its head (s)!!!

Andy B Over Active Poster Offline Posts: 21988 Bury Lancs Gender: Drives: 1999 3.0 Elite auto/TDM	Re: Off with its head (s)!!! Reply #90 - 09. Mar 2009 at 00:00 cem wrote on 08. Mar 2009 at 23:52: so I deserve to be the most stupid member medal Is Otosan still a company? Maybe cheaper motoring.
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cem Omega King Offline Posts: 13920 Ankara/Turkey Gender: Drives: 97 2.5 V6 Manual CD- Clio Sport	Re: Off with its head (s)!!! Reply #91 - 09. Mar 2009 at 00:01 Thanks for your interest, good night
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HerefordElite

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Welcome to the Shire

Posts: 1747
Hereford
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Drives: A6 Avant 2.5tdi Quattro Sport

Re: Off with its head (s)!!!
Reply #92 - 09. Mar 2009 at 00:09

cem wrote on 08. Mar 2009 at 23:57:

HerefordElite wrote on 08. Mar 2009 at 23:55:

good news Mehmet exchange rate is better at moment 750TRY = only 296GBP Cheesy

Sure anyone on here would sort parts and postage for you if you need bits Thumbs Up!

problem is the GBP part is fix TRY part changes so they profit more Embarrassed

oh sorry got the exchange rate the wrong way round Embarrassed

£350 is 885TRY Shocked

Just ask on here and i for one would be happy to try and source bits for you Thumbs Up!

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Nova SR, MKII Cav Sri130, MKII Astra GTE16v, Omega 3.0V6 Elite, Silver Cross Sleepover Classic

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chrisgixer

Omega King

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Black ones are faster.

Posts: 14570
Wokingham
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Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.

Re: Off with its head (s)!!!
Reply #93 - 09. Mar 2009 at 00:46

so if i read correctly, leaking stem seals are a possible cause re pre cat issue, and Micks car has an inferior item fitted from the factory?
And its not necessarily down to mileage/use/thrashing when the dreaded 0420/30 appear?

If so any idea on which engine numbers are likely to be effected by these/how long where they in the production run? Can they be told apart by part number from other drive by wire cars. In short, how to tell if an individuals car would be effected with these stem seals?

When your ready... I can see your busy:-)

Looks like fun though.

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M0T0RVATE

Intermediate Member

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Posts: 368
London
Gender: male

Drives: '94 OMEGA 3.0L ELITE

Re: Off with its head (s)!!!
Reply #94 - 09. Mar 2009 at 01:42

markey mark wrote on 06. Mar 2009 at 13:38:

i have just rebuilt mine mark with facelift manifolds ported the heads on exhaust side put 4 g cams in junked the egr and sec air inj system heads were refurbed skimmed all new inlet valves new valve seals all valves re lapped runs sweet and does have a lot more go in it ! Thumbs Up!

While having a look around my '94 3.0L, I discovered that the secondary air injection system is already removed, (well most of the main parts...lol)...

I am also going to remove the EGR system completely.
Is there a blanking plate for the intake plenum, or do I just fabricate my own, as originally planned.

Only had my Omega about 6 weeks, so still needs a few bits sorting...

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Martin Imber

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LPG Omega V6 - Keyfobs
Rebuilt

Posts: 20110
Worcester
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Drives: 2001 Omega 2.6CD LPG & 3.0 cams

Re: Off with its head (s)!!!
Reply #95 - 09. Mar 2009 at 08:59

chrisgixer wrote on 09. Mar 2009 at 00:46:

so if i read correctly, leaking stem seals are a possible cause re pre cat issue, and Micks car has an inferior item fitted from the factory?
And its not necessarily down to mileage/use/thrashing when the dreaded 0420/30 appear?

If so any idea on which engine numbers are likely to be effected by these/how long where they in the production run? Can they be told apart by part number from other drive by wire cars. In short, how to tell if an individuals car would be effected with these stem seals?

When your ready... I can see your busy:-)

Looks like fun though.

All DBWs until 2002 AFAIK

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The other tuned 2.6. DIY LPG, towbar, upgrade ICE & Wing Spoiler, Air shocks, Eibach Pro Springs, Poly WB bushes, WIM setup, HID conversion, 3.0 cams, ported ect.

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TheBoy

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TBE has an MOT!

Posts: 64817
Brackley, Northants
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Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10

Re: Off with its head (s)!!!
Reply #96 - 09. Mar 2009 at 09:29

Marks DTM Calib wrote on 08. Mar 2009 at 23:06:

Ok, stripped a head down today.

Here is a pic of the trouble stem seals.

The green one is the standard Vx stem seal as used throughout the 2.5 and 3.0 production run plus most of the other big block 4 pots to!

The red one is the issue, it is vey hard and I could simply pull it off the guide with my fingers (compared to the ones on TB's old heads which required special pliers and brute force to shift even at 10 years old and 100K+ miles).

Now these came into existance because some low life, sorry purchasing person, decided to try to save a penny a seal by using an alternative which had not been proven!. I trust they were sacked, fired and buried for that one!

[img]

Here are all the removed items, these will be soaked in caustic soda for 24 hours before having a good hot rinse and final clean in an ultrasonic bath.

[img]

And the head, this will gently 'bleed' old oil until I get a chance to pressure wash it down ready for a bit of 'touching in'

[img]

About 147k Thumbs Up!

So is it just the 2.6, or 2.6/3.2 fitted with these, and is it all of these engines or just a subset (I guess at the moment we don't really know?)

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If you are going to kick a car, remember to wear appropriate footwear
Any posts are the result of my own views as a member of OOF, which may or may not be the same as my views as part of the Admin Team.

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Marks DTM Calib Administrator Offline Ex Member Posts: 25671 Northern Hemisphere Gender: Drives: Astra J, Mum Bus, Dexta Tractor, 108 DMU wip	Re: Off with its head (s)!!! Reply #97 - 09. Mar 2009 at 09:31 I have a question in with GeffD on this one!
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chrisgixer Omega King Offline Black ones are faster. Posts: 14570 Wokingham Gender: Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.	Re: Off with its head (s)!!! Reply #98 - 09. Mar 2009 at 10:10 how many miles on Micks car, just out of interest? And are these seals likely to be prematurely effected by alternative fuel like lpg?
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Marks DTM Calib

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Northern Hemisphere
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Drives: Astra J, Mum Bus, Dexta Tractor, 108 DMU wip

Re: Off with its head (s)!!!
Reply #99 - 09. Mar 2009 at 10:35

chrisgixer wrote on 09. Mar 2009 at 10:10:

how many miles on Micks car, just out of interest?

And are these seals likely to be prematurely effected by alternative fuel like lpg?

I dont recall, about 100K ish.

They are bad though, I have never before been able to remove a stem seal with my fingers and the valves just fall through them once the collets are removed!

It appears as if the rubber is not oil tolerant which is pretty piss poor given where they spend there working life!

Might get a few valves cleaned up tonight so will post some further pics.

Might also get the head initialy de-greased ready for some work.

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« Last Edit: 09. Mar 2009 at 10:36 by Marks DTM Calib »

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MikeDundee

Omega King

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avatar borrowed from DLK
for a bit.....

Posts: 10127
Costa Del Peckham
Gender: male

Drives: Irmscher Omega 3.0 V6

Re: Off with its head (s)!!!
Reply #100 - 09. Mar 2009 at 10:38

Marks DTM Calib wrote on 07. Mar 2009 at 09:58:

MikeDundee wrote on 07. Mar 2009 at 02:18:

Kepp up the good work Mark Thumbs Up!

.....just one query though, thought you were just gonna keep an eye on the tyre pressures Lips Sealed

.....why's the engine in bits Lips Sealed

Ow bugger, forget to do the tyres!

Not a problem though, there on ebay so will have a new owner shortly!

Ahh, thats Ok then, Huh

......I can stop drinking now, had me worried there for a minute Grin

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MikeDundee

Omega King

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avatar borrowed from DLK
for a bit.....

Posts: 10127
Costa Del Peckham
Gender: male

Drives: Irmscher Omega 3.0 V6

Re: Off with its head (s)!!!
Reply #101 - 09. Mar 2009 at 10:38

Marks DTM Calib wrote on 09. Mar 2009 at 10:35:

chrisgixer wrote on 09. Mar 2009 at 10:10:

how many miles on Micks car, just out of interest?

And are these seals likely to be prematurely effected by alternative fuel like lpg?

I dont recall, about 100K ish.

They are bad though, I have never before been able to remove a stem seal with my fingers and the valves just fall through them once the collets are removed!

It appears as if the rubber is not oil tolerant which is pretty piss poor given where they spend there working life!

Might get a few valves cleaned up tonight so will post some further pics.

Might also get the head initialy de-greased ready for some work.

Mileage is just under 120k Thumbs Up!

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Marks DTM Calib Administrator Offline Ex Member Posts: 25671 Northern Hemisphere Gender: Drives: Astra J, Mum Bus, Dexta Tractor, 108 DMU wip	Re: Off with its head (s)!!! Reply #102 - 09. Mar 2009 at 11:14 If this work does not make a difference to the running of your car Mick, I will be very surprised!
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chrisgixer

Omega King

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Black ones are faster.

Posts: 14570
Wokingham
Gender: male

Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.

Re: Off with its head (s)!!!
Reply #103 - 09. Mar 2009 at 11:38

MikeDundee wrote on 09. Mar 2009 at 10:38:

Marks DTM Calib wrote on 09. Mar 2009 at 10:35:

chrisgixer wrote on 09. Mar 2009 at 10:10:

how many miles on Micks car, just out of interest?

And are these seals likely to be prematurely effected by alternative fuel like lpg?

I dont recall, about 100K ish.

They are bad though, I have never before been able to remove a stem seal with my fingers and the valves just fall through them once the collets are removed!

It appears as if the rubber is not oil tolerant which is pretty piss poor given where they spend there working life!

Might get a few valves cleaned up tonight so will post some further pics.

Might also get the head initialy de-greased ready for some work.

Mileage is just under 120k Thumbs Up!

Can you remember the mileage when the cat code first came on? Probably a better indication of the seals life.

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Martin Imber Over Active Poster Offline LPG Omega V6 - Keyfobs Rebuilt Posts: 20110 Worcester Gender: Drives: 2001 Omega 2.6CD LPG & 3.0 cams	Re: Off with its head (s)!!! Reply #104 - 09. Mar 2009 at 11:40 Marks DTM Calib wrote on 09. Mar 2009 at 09:31: I have a question in with GeffD on this one! I asked around a while ago Started with DBW - for about 1 year AFAIR GeoffD reckons +18bhp from 3.0 cams 196bhp How much from some gentle porting?
Back to top	« Last Edit: 09. Mar 2009 at 11:44 by Martin Imber » The other tuned 2.6. DIY LPG, towbar, upgrade ICE & Wing Spoiler, Air shocks, Eibach Pro Springs, Poly WB bushes, WIM setup, HID conversion, 3.0 cams, ported ect. IP Logged

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