Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Lesopc on 31 March 2011, 10:52:14

Title: V8 conversion details
Post by: Lesopc on 31 March 2011, 10:52:14
If i were to fit a GM LS series V8 into my miggy, would the ECU Black Box(es) fit within the engine bay without modification?
If modifications are required, can anyone tell me what they would be?
Title: Re: V8 conversion details
Post by: Shane mvsex on 31 March 2011, 11:51:32
im very interested in this myself, i would love to fit a v8 in my mig...
maybe one day but i will keep watching  :y
Title: Re: V8 conversion details
Post by: Lesopc on 31 March 2011, 12:18:58
Just a little something i think should have happened. GM/Opel/Vauxhall did originally plan one but it never materialized.
Mine would be a Irmscher Team V8Star tribute car from years 2001-2003 driven by the great Jonnie Cecotto as car #9 and #1 (2001/2) and Yves Olivier (2003 R1&2) and Roland Asch (2003 R3,4,6&7) as car #2
Title: Re: V8 conversion details
Post by: joshwyatt on 31 March 2011, 12:24:59
I'm afraid I'm not able to help on the technical side, but perhaps this official photo of the planned V8 Omega may help? I think I have a few more, I'll try and dig them out.

(http://i674.photobucket.com/albums/vv110/joshwyatt/473.jpg)
Title: Re: V8 conversion details
Post by: TheBoy on 31 March 2011, 13:35:26
Much of the mechanical details are within TIS, but no wiring info.  Also, AFAIK, the different code indexes and configurations for the associated ECUs (gearbox/ABS) never made it to TIS, thus not available.
Title: Re: V8 conversion details
Post by: feeutfo on 31 March 2011, 18:54:31
I'll have to get the pc out, Tis only gives me wiring diags for some reason?  :-/



Title: Re: V8 conversion details
Post by: Gaz79 on 31 March 2011, 20:48:29
Youshould have the room in the engine bay because they used the same chassis for the Holden Commodore of the same year and they can with a V8. Father-in-law has just sold his HSV GTS VT-II, such a lovely car and the main reason i bought a Mig
Title: Re: V8 conversion details
Post by: Lesopc on 31 March 2011, 23:40:32
So in theory it should all fit then?
Thanks guys.
Title: Re: V8 conversion details
Post by: feeutfo on 01 April 2011, 01:17:34
Awaits a post from 2woody...
Title: Re: V8 conversion details
Post by: damon80 on 01 April 2011, 01:21:12
When the v8.com Omega was originally conceived (before obviously being canned) - was it the LS1 or LS2 engine that was fitted?  (I can't see it have being the Northstar V8 they envisaged fitting to it)  :-/
Title: Re: V8 conversion details
Post by: feeutfo on 01 April 2011, 02:00:04
North star is way too wide. We know the steering box was retained, there are pics on the web of additional cooling rad and plumbing for the pas system, and we know an LS1 has been fitted diy, which is very close to the steering box meaning special headers had to be made to clear the steering box by the rear cylinder on that side.
 Ls engines are twin valve per cylinder with push rods working off a single cam in the valley of the v, so there are no cams in the heads, only rockers, this makes the Ls heads very compact and narrow.

 North star is double overhead cam four valves per cylinder. So that naturally makes both heads wider, and hence will not clear the steering box. Will n star fit with a rack? Maybe, but note the v platform was widened for use in Holdens etc. The Holden is a  wider car I am certain.
Title: Re: V8 conversion details
Post by: feeutfo on 01 April 2011, 02:16:51
Also I believe the Northstar was originally designed for front wheel drive applications.

Title: Re: V8 conversion details
Post by: TheBoy on 01 April 2011, 08:40:38
Quote
Also I believe the Northstar was originally designed for front wheel drive applications.

V8 and FWD. That sounds like a whole lot of fun an expensive tyre choice...
Title: Re: V8 conversion details
Post by: feeutfo on 01 April 2011, 09:25:27
Quote
Quote
Also I believe the Northstar was originally designed for front wheel drive applications.

V8 and FWD. That sounds like a whole lot of fun an expensive tyre choice...
Yes, seems odd to me, but each to thier own as they say...

Afaik, by far the biggest problem fitting an LS1 will be the exhaust manifold/steering box collision issue on the rear cylinders, then getting the exhaust to exit down the transmission tunnel, there's very little room.

Here's an LS1 in place, see the position of the steering box, where the rear exhaust msnifold should be exiting.
(http://i344.photobucket.com/albums/p326/chrisgixer/00033fd5.jpg)

And here is the original exhaust manifold designed for the v8 omega on the steering box side, left hand drive in this case, note the shape of the rear exhaust exit from the head due to the space available.
(http://i344.photobucket.com/albums/p326/chrisgixer/12cba9f9.jpg)
Title: Re: V8 conversion details
Post by: feeutfo on 01 April 2011, 09:30:13
So siting the ecu will be a minor issue. But having said all the above this conversion has been done, by at least two people on both sides of the pond.  :)
Title: Re: V8 conversion details
Post by: bob.dent on 01 April 2011, 10:01:59
Under the bonnet of the V8Star (taken when it was racing at Snetterton)

(http://i210.photobucket.com/albums/bb9/bobdent/Snetterton/Snetterton025.jpg)
Title: Re: V8 conversion details
Post by: feeutfo on 01 April 2011, 13:10:57
Theres a Holden of similar spec to that advertised for €45k.  :o.  And probably has as much in common to a Holden as that lovely thing has with an omega.  :y
Title: Re: V8 conversion details
Post by: Kevin Wood on 01 April 2011, 14:16:49
Quote
Quote
Also I believe the Northstar was originally designed for front wheel drive applications.

V8 and FWD. That sounds like a whole lot of fun an expensive tyre choice...

They have strange ideas on how to make cars the other side of the pond. Like the POS Chavrolet I was driving last week.

2.2 16v with VVT - so, going to be wanting a few revs to keep it on the boil, then?.. Nope. 2K RPM at 70 MPH <terribly sorry old boy, I am a little tired>. >:(

Kevin
Title: Re: V8 conversion details
Post by: Lesopc on 02 April 2011, 12:33:15
Quote
When the v8.com Omega was originally conceived (before obviously being canned) - was it the LS1 or LS2 engine that was fitted?  (I can't see it have being the Northstar V8 they envisaged fitting to it)  :-/
I believe it would have been a LS series engine as the Northstars were only fitted to the likes of the German DTM race cars?
Title: Re: V8 conversion details
Post by: tunnie on 02 April 2011, 17:34:34
Quote
Quote
Quote
Also I believe the Northstar was originally designed for front wheel drive applications.

V8 and FWD. That sounds like a whole lot of fun an expensive tyre choice...

They have strange ideas on how to make cars the other side of the pond. Like the POS Chavrolet I was driving last week.

2.2 16v with VVT - so, going to be wanting a few revs to keep it on the boil, then?.. Nope. 2K RPM at 70 MPH <terribly sorry old boy, I am a little tired>. >:(

Kevin

Was it a Chevy Malibu? My 2.2 Omega performed like a V8 in comparison to it when I had one a few years back  ;D

(http://cardealersboston.com/wp-content/uploads/2010/10/herb-chambers-chevy-malibu_1.jpg)

Title: Re: V8 conversion details
Post by: Kevin Wood on 02 April 2011, 23:54:31
Something like that. It was so entirely forgettable I can't even remember. ;D

Ahh, just googled. It was a Chevrolet Cobalt. So, an Astra saloon, essentially.

Certainly the most gutless 2.2 I've ever driven, and apparently it's 155 BHP. :o

Kevin
Title: Re: V8 conversion details
Post by: 2woody on 04 April 2011, 08:55:38
you've said everything I'd say really - I must have got you all well trained by now.

Northstar just isn't suitable for a rear wheel drive car unless that car was specially designed to take its huge girth - it really is very wide. There is no chance that an Omega V8 would ever have had the engine.

to andwer the wiring question, you'd build it first and then slot in the wiring to suit, it's not difficult unless you're completely colour blind. LS1's like to have the airbox where Omegas have the fuse box, so some moving about would be in order.

Incidentally, the Holden is a wider car, but still built on the same floorpan. All the curved parts at the extremes are the same as Omega, but there's a combination of extra parts which make the whole about 2inches wider.
Title: Re: V8 conversion details
Post by: 2woody on 04 April 2011, 08:57:14
Quote
Youshould have the room in the engine bay because they used the same chassis for the Holden Commodore of the same year and they can with a V8. Father-in-law has just sold his HSV GTS VT-II, such a lovely car and the main reason i bought a Mig

which one's this....

Marple ....?