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[aaronjb]

And/or would the GM 'risers' on the mounts have raised the engine to add a little clearance (it was still clearly tight, since the GM manifolds have that flattened rear runner).

[Marks DTM Calib]

I recall the use of an aluminium bonnet in order to recover the weight gained by the bigger V8 unit

[TheBoy]

I recall the use of an aluminium bonnet in order to recover the weight gained by the bigger V8 unit

I think it was more than just the bonnet...

[feeutfo]

I recall the use of an aluminium bonnet in order to recover the weight gained by the bigger V8 unit

I think it was more than just the bonnet...

... Such as? Do you know? 

[TheBoy]

I recall the use of an aluminium bonnet in order to recover the weight gained by the bigger V8 unit

I think it was more than just the bonnet...

... Such as? Do you know? 

Not without firing up TIS. And its Friday night, so that ain't gonna happen any time soon

Look until Technical Features for 2001

[omegabsw]

Yeah, I think you may be right one must be without as 3 inches is a fair old whack.

As already said before the manifolds on the top conversion are massive, tubular and aftermarket. 

The bottom ones im sure are Northstar manifolds and a lot slimmer.

I dont know a lot about GM V8's but im sure that the LS1/LS2 is a pain in the arse to wire up, where as the Northstar is an easier engine to use for a conversion

Those shown, as said, are the exact part designed for the ls1 specific to the omega chassis and would have been part of the production run, had it gone ahead.

As you say thats an ls1 lump, and we know the northstar is wider, so can you explane how any northstar compnonents would be involved in the Gm omega v8 project?

The diy manifolds shown in the top pic are so because the genuine part was not available, therefor had to use construction methods available to him, giving the result shown. Non of this however has any baring on tne space avaiable, which is governrd by the width of the omega chassis, the use of a steering box and its fixed position on the omega model range and the size of the engine used.

Result, not enough space.

There are however production manifolds availabl that are far more efficient with the space used, but even these would need modification on the rear cylinders, and dont join the cat section at the same position causing other minor agros as well. All in all, given possible flow restrictions on top of everything else, 1 i can see why the diy builder went the route he did, good job imo! And 2, non of the above has any baring on the main issue, the position of the steering box re manifold outlet!

I was sure that GM never intended on putting the LS1 in the Omega!

It was designed with the Northstar V8, Not the LS1!

I have just googled it and one of the first things that came up was a thread from OOF where an admin even says it was the Northstar lump.

http://www.omegaowners.com/forum/YaBB.pl?num=1175280656/7

I may be wrong, I sometimes am

[feeutfo]

I recall the use of an aluminium bonnet in order to recover the weight gained by the bigger V8 unit

I think it was more than just the bonnet...

... Such as? Do you know? 

Not without firing up TIS. And its Friday night, so that ain't gonna happen any time soon

Look until Technical Features for 2001

I no longer have access sadly.

[feeutfo]

Yeah, I think you may be right one must be without as 3 inches is a fair old whack.

As already said before the manifolds on the top conversion are massive, tubular and aftermarket. 

The bottom ones im sure are Northstar manifolds and a lot slimmer.

I dont know a lot about GM V8's but im sure that the LS1/LS2 is a pain in the arse to wire up, where as the Northstar is an easier engine to use for a conversion

Those shown, as said, are the exact part designed for the ls1 specific to the omega chassis and would have been part of the production run, had it gone ahead.

As you say thats an ls1 lump, and we know the northstar is wider, so can you explane how any northstar compnonents would be involved in the Gm omega v8 project?

The diy manifolds shown in the top pic are so because the genuine part was not available, therefor had to use construction methods available to him, giving the result shown. Non of this however has any baring on tne space avaiable, which is governrd by the width of the omega chassis, the use of a steering box and its fixed position on the omega model range and the size of the engine used.

Result, not enough space.

There are however production manifolds availabl that are far more efficient with the space used, but even these would need modification on the rear cylinders, and dont join the cat section at the same position causing other minor agros as well. All in all, given possible flow restrictions on top of everything else, 1 i can see why the diy builder went the route he did, good job imo! And 2, non of the above has any baring on the main issue, the position of the steering box re manifold outlet!

I was sure that GM never intended on putting the LS1 in the Omega!

It was designed with the Northstar V8, Not the LS1!

I have just googled it and one of the first things that came up was a thread from OOF where an admin even says it was the Northstar lump.

http://www.omegaowners.com/forum/YaBB.pl?num=1175280656/7

I may be wrong, I sometimes am

Your aware the northstar is WIDER than the ls1? Yes?....


Maybe we all have it wrong, maybe it was the merlin engine in the diy pics and that's why it's so tight for space. Thus a northstar would be far easier to fit, and an ls1 would have acres to play with. 

Anyway it won't be northstar in any diy project I have to pay for, thier mega bucks. Even before fitting! 

[omegabsw]

I am aware it was wider but as we were discussing on the first page those manifolds are not helping him out one bit.
Which is why I stated that the manifold in the other pic that was posted looks like a lot better fit.

I just want an answer for my own sanity, was it the Northstar that GM intended or the LS1?

Now a Merlin engine in an Omega 

[2woody]

no, definitely Gen-III Chevy, not Northstar.

The Northstar is absolutely huge and was designed for front-wheel-drive (yes, really), so doesn't readily adapt to correct-wheel-drive. I did a Northstar installation back in 1996 for a company I can't name on here, there were no rwd Northstars available then, so I had to design a bellhousing for them. I believe that there is a Northstar now available with rwd, so at least the bits are available. Cadillac STS ?

Not aware of any other rwd Northstar conversions around. Certainly all the fwd donor vehicles need to be hooked up to the 4T80 transverse gearbox for the electrics to work - much more difficult than with an LS1 (at least an early one anyway)

The "original" manifolds for the Omega V8 were tubular - you have the correct pics, but these may have been low-volume pre-production items destined to be replaced with cast for series production. Any way up, I have no fear that current after-market "tight-tuck" manifolds can be made to work with the Omegas steering box.

The clearance pictured isn't that bad. In the region of the manifolds, the engine movement is "up/down" and not "side-to-side". 3/4 inch is good enough for clearance under all circumstances and to slide a heatshield in.

[omegabsw]

no, definitely Gen-III Chevy, not Northstar.

The Northstar is absolutely huge and was designed for front-wheel-drive (yes, really), so doesn't readily adapt to correct-wheel-drive. I did a Northstar installation back in 1996 for a company I can't name on here, there were no rwd Northstars available then, so I had to design a bellhousing for them. I believe that there is a Northstar now available with rwd, so at least the bits are available. Cadillac STS ?

Not aware of any other rwd Northstar conversions around. Certainly all the fwd donor vehicles need to be hooked up to the 4T80 transverse gearbox for the electrics to work - much more difficult than with an LS1 (at least an early one anyway)

The "original" manifolds for the Omega V8 were tubular - you have the correct pics, but these may have been low-volume pre-production items destined to be replaced with cast for series production. Any way up, I have no fear that current after-market "tight-tuck" manifolds can be made to work with the Omegas steering box.

The clearance pictured isn't that bad. In the region of the manifolds, the engine movement is "up/down" and not "side-to-side". 3/4 inch is good enough for clearance under all circumstances and to slide a heatshield in.

Just proves that you cant believe everything you read on OOF then!   

Seriously tho, V8 FWD! 

Makes sense tho when you check this out 

Code: [Select]

http://www.cwstuning.com/gallery/coupe-degolf/engineandfrontshot

[2woody]

http://en.wikipedia.org/wiki/GM_Premium_V_engine#Northstar

[omegabsw]

How about a BMW M60?

I had one of these in my E38 740 and it pulled like a train. The engine is still about funnily enough my mate is making a manual 7 series v8

[media]http://www.youtube.com/watch?v=b0hjHHgGkEY[/media]

[sassanach]

fwd it is
http://www.flickr.com/photos/9038936@N07/4693321896/
its a tight fit in here!!!
http://www.flickr.com/photos/9038936@N07/2939190064/

[omegabsw]

fwd it is
http://www.flickr.com/photos/9038936@N07/4693321896/
its a tight fit in here!!!
http://www.flickr.com/photos/9038936@N07/2939190064/

Whats car is that in the second picture? it looks real strange the engine sitting in there