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[GastronomicKleptomaniac]

Why not use a 2.8 V6 Turbo?

Out of interest, how closely related are the later 2.8s to the Omega V6s? I know the Vectra's 3.2 was a FWD version of the Omega 3.2...

This has nothing to do with a very cheap ex-plod 2.8 Vectra that's kicking about...

Not even remotely

Bah! Suspect it's much more like a Saab then?

Apologies for the lack of grammar in my posts this evening, my head's on back to front after work.

[TheBoy]

marknorton - no idea how high you can go, but clearly increasing the redline is the "easy" way to produce more power. Obviously, there is a point it will eat itself, though not sure any of us know where that is.

Contrary to what I said earlier, as its not an Omega, exhaust manifold (as you probably have lots of scope for placement) may help a bit, although 3.2 is nowhere near as bad as the 2.5/3.0 manifold. Megasquirt or similar ECU makes playing with parameters much easier. Kevin Wood knows a lot about Megasquirt, having dumped the Webers and fitted Megasquirt to his Zetec powered Westfield.


I hope you will keep us updated with progress, both with the 2.5 and 3.2, in the same way lozzzzzz has with fitting a GM V6 in his Scimitar

[cem_devecioglu]

CEM^^^ not sure why its funny. serious question, just wanted answers from experienced engine builders. i dont think 300hp is alot either. depends what you are used to

300 bhp is not necessary for daily usage unless you drag at traffic lights or some other..  here are very good mechanics that can tell you why 300 bhp is a tall order for GM v6.. all I can say is dont waste your money with the wrong engine..

[tunnie]

CEM^^^ not sure why its funny. serious question, just wanted answers from experienced engine builders. i dont think 300hp is alot either. depends what you are used to

300 bhp is not necessary for daily usage unless you drag at traffic lights or some other..  here are very good mechanics that can tell you why 300 bhp is a tall order for GM v6.. all I can say is dont waste your money with the wrong engine..

I've been in a Monaro with 620bhp, that felt quite adequate for daily usage 

[cem_devecioglu]

CEM^^^ not sure why its funny. serious question, just wanted answers from experienced engine builders. i dont think 300hp is alot either. depends what you are used to

300 bhp is not necessary for daily usage unless you drag at traffic lights or some other..  here are very good mechanics that can tell you why 300 bhp is a tall order for GM v6.. all I can say is dont waste your money with the wrong engine..

I've been in a Monaro with 620bhp, that felt quite adequate for daily usage 

I want to see, you use all this power in London..  and all police after you

[aaronjb]

Ah but if you're going to play the "You don't need X bhp" game - you don't need 200hp either, or whatever a 2.5V6 produces Somewhere around 90hp ought to be plenty...

[markrnorton]

I think this has gone off topic, simple questions asked, simple answers required

[cem_devecioglu]

ok.. simple answer: bottom end will not permit.. 
 

[markrnorton]

Cem, so what you are saying is with a steel crank and a rebuild the bottom
End is still not upto the job ?

And is this your opinion or experience in tuning the v6 to destruction ?

I am not after speculation, just experience

Money is not the primary consideration

[TheBoy]

I think the fact remains, nobody has tried it.

We know the turbo'd (by those useless idiots at Courtney), the 3.0l knocks out the bottom end in time. Not sure what power that puts out.  The 3.2 supposedly has a stronger crank. How much stronger?

Sadly, as you say, you are the trailblazer here...

[serek]

you wont come any were near 300 bhp with out turbo or supercharger
lets put some prices
fast raod cams for 3.0 or 3.2 500£ or more
manifolds in uk 1k£ if you find someone who will make them for you
exhaust system with sports cats 800-1K £
clutch with light fly wheel 300-500£
ECU master 150£+
and many other little things ££££
then maybe bigger brakes??
 btw I know someone who done all this and much more in his omega and come up to 265 bhp try at few different RR
any way good luck with you project 

[Vitaliy]

Have you ever considered something mad - Renault ( god i hope i will not be banned for this  ). To be fair what i have in mind was designed by best engineers from renault, peugeot and citroen. If my memory is correct it has won award for its smoothness and the way it delivers power. Probably the best petrol engine ever produced in France.

Just check if L7X will fit your criteria ( fitted to laguna mk1 ph2, espace, vel satis, avantime, and peugeot 406, 407, some citroens as well).

Previously I had Espace with such engine - its 3.0 v6 24v with 194bhp stock (or 210 depending on a inlet manifold and other bits). I think crank on that is way better for handling torque than any GM.

Now when tuning is concerned - it was fitted to clit v6 cup. Power output was increased there. Additionally i believe at some point it was turbocharged for a bigger kick


Its all just a thought.

[cem_devecioglu]

Cem, so what you are saying is with a steel crank and a rebuild the bottom
End is still not upto the job ?

And is this your opinion or experience in tuning the v6 to destruction ?

I am not after speculation, just experience

Money is not the primary consideration

yes.. and besides even if you reach 300 bhp you will have a cooked engine within short time..(it has serious cooling issues..)
 
for less money you can get another engine designed for high performance and achieve the result in shorter time..
 
I'm afraid most tuners on omega choose the easier path..   
 
 
 

[cem_devecioglu]

here is a good list of powerful v6 engines
http://www.edmunds.com/car-reviews/features/the-25-greatest-v6-powered-cars-ever.html

[TheBoy]

You're all missing the point, the OP has looked, anf the 54 degree GM V6 is the right package size. So that has to be the basis