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[TheBoy]

the XEV is used as RWD in the omega but in the vectra it is FWD, also the 2.5v6 is FWD in the vectra! so i would imagine the let would mate to the omegas gearbox, the xev and let blocks are simmilar so i could probably use the mounts from the xev on the let.

ps. do i sound mad to you people?

Lot of work and expense for no gain, and a load of downsides

[megaOmega]

the XEV is used as RWD in the omega but in the vectra it is FWD, also the 2.5v6 is FWD in the vectra! so i would imagine the let would mate to the omegas gearbox, the xev and let blocks are simmilar so i could probably use the mounts from the xev on the let.

ps. do i sound mad to you people?

Lot of work and expense for no gain, and a load of downsides

is that a yes then?

from what i imagine, the let would behave like a xev until the turbo came on boost and then it would be like a V6

[TheBoy]

the XEV is used as RWD in the omega but in the vectra it is FWD, also the 2.5v6 is FWD in the vectra! so i would imagine the let would mate to the omegas gearbox, the xev and let blocks are simmilar so i could probably use the mounts from the xev on the let.

ps. do i sound mad to you people?

Lot of work and expense for no gain, and a load of downsides

is that a yes then?

from what i imagine, the let would behave like a xev until the turbo came on boost and then it would be like a V6

No, from what I recall, its tuned differently (like most small turbo cars), reliant on the turbo for all its power.  I seem to recall its low down torque is virtually non existent. On light Astras, thats not so much of an issue. On a 1700kg car, thats going to result in either it bogging down, or throwing 200bhp through the tyres with the predictable outcome.

[Andy B]

Is that the turbo 2.0 engine which is less powerful than the 3.0 and  3.2 V6s?

yes it has 200bhp, but it is lighter!!! and has a TURBO!! i mean whats not to like!!

There's substitute for cubes!       

[TheBoy]

the XEV is used as RWD in the omega but in the vectra it is FWD, also the 2.5v6 is FWD in the vectra! so i would imagine the let would mate to the omegas gearbox, the xev and let blocks are simmilar so i could probably use the mounts from the xev on the let.

ps. do i sound mad to you people?

Lot of work and expense for no gain, and a load of downsides

is that a yes then?

from what i imagine, the let would behave like a xev until the turbo came on boost and then it would be like a V6

LOL, either mad or genius - life needs people who are prepared to try 'stupid' (in the eyes of some) things, else we'd all live in caves....

[megaOmega]

ooh, i didn't know that . i have driven a volvo s40 t4 and that is  a heavy car with a 2.0 turbo and that was bloddy mental!
it had 200 bhp with 300nm's of the twisty stuff (Torque)

i understand your point and i withdraw my idea

i'll get my coat :-/

[TheBoy]

ooh, i didn't know that . i have driven a volvo s40 t4 and that is  a heavy car with a 2.0 turbo and that was bloddy mental!
it had 200 bhp with 300nm's of the twisty stuff (Torque)

i understand your point and i withdraw my idea

i'll get my coat :-/

Its not the peak figures you're interested in (unless its a track car). Try and get the torque/power curves for let and compare

[johnboy27]

I have a old cavalier that i put a c20let into, the conversion from a normal 2.0 was quite straight forward & the loom from the c20let engine was very similar to the old one so i would presume this would be the case with the omega. although the ecu sits inside the car on a cavalier instead of under bonnet on the omega.
Owning both a cavalier c20let & a omega 3.0v6 its hard to say either engine is good or bad, but i would say the v6 is suited better to the omega.

[NiallyV6CDX]

What is the code of the newer 2.0 Turbo they used in the previous Astra Coupe/ SRI/GSI ?? :-?
That is a relatively modern and tuneable engine and probable a lot less laggy the the old calibra (C20LET) engine. Anyone familiar with those engines?

[924boy]

thats the z20let engine. probably more of an easier swap for the x20xev that omegas have. the c20let is more the equivalent to the older 16v (20xe) as fitted to early calibras, astra gte's etc.

[sparkyw666.]

hi, i do like the sound of a v6 but maybe in a few years time, /quote]
i know how u want the 2.0 its because of the insurance is it .used to have a 1.8 mondeo and i only pay a hundred more a year for my 3.0 mv6 trust me mate it worth it in the long run and the nose of that v6 lump its like sweet music

[johnboy27]

Yeah the Z20LET engine is newer & probably easy to get hold off nowadays.
Also they are more drivable with power lower down the revs. the old red top c20let is a bit flat low down, so you find yourself thrashing them to make them go, especially in an heavier car like the omega.
Anyway good luck in which ever you chose.

[mathewst]

S40 compared to omega is a lightweight toy 
My old A6 was even lighter than the mig.
Why simply not try to put the turbo on the V6, then you would have the sound and the power 

[andyc]

stick a V8 in it.............Job done

[Kevin Wood]

A turbocharged engine will have very much lower compression than a natasp and will be tuned differently so it's not true to say it will have equivalent power until it comes on boost.

A mate of mine had a Lotus 7 replica (so light - 600Kg car) with a 270 BHP Cosworth Turbo engine.

That engine was on boost at an 80MPH cruise - that's how gutless it would have been without a turbo.

It was something else when given a bootful through the gears though.

With a light car it's not a problem if there's a bit of a hole at low RPM before the boost builds - it will pull through it quickly enough. Add another tonne of weight and it's a different story.

Personally, given that the V6 suits a heavy car better, and is available without any effort, it would be my choice. Having said that, get into a project like this and it's amazing what you learn. I just think an Omega might not be the most rewarding recipient of a LET.

Kevin