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[humbucker]

if you were to turbo the v6, essentially an exercise in replicating the set up of a vectra vxr, would you need to use stronger pistons and uprated injectors? presumably an adjustable fuel pressure regulator too? i wondered how strong the pistons in a stock x30xe were in comparison to a c20let and whether or not they would cope with the pressure. would steel rods be essential too?

[pedroMV6]

You'd most likely have to reduce the compression ratio, but to what, I don't know.

[humbucker]

i read somewhere that LET pistons are the same bore as the x30xe so that could be an easy way of reducing compression for turbo use?

[aaronjb]

It's a bit like asking how long a piece of string is, really.. But here's a list to get you started:

Two turbos (£5-800 each)
Two new exhaust manifolds (I was quoted some £1000 for a single custom tubular manifold, recently)
Two new downpipes
Engine management
Probably larger fuel injectors
Possibly a fuel rail to suit if you can't find VX fitment injectors that are bigger

If you're happy with low boost you might be able to keep the stock compression ratio, crank & rods - depends quite how chocolate they are (for example, on the 1ZZFE in my other car, I kept stock pistons, rods and crank and as long as I stay below 300bhp they'll hold fine - that's double stock power..).

If you're going to split the engine and start replacing rods etc then you may as well drop forged custom pistons in there (JE or Cosworth will make them up to any specification you require)

How deep is your wallet? It cost me some £3k for the basic setup on the 4-pot MR2, and you have an extra turbo and manifold to worry about..

[humbucker]

you can run a single turbo on the v engines, the saab 3.0 runs a single turbo as does the vectra vxr; twin custom manifolds with a single feed to the turbo. two turbos would be ideal, but not realistic given a budget and the space you have to play with in the 'bay.

it was the other considerations really, running standard boost what sort of gains would you see and would the stock x30xe pistons turn to chocolate and melt through usage. obviously custom items are preferred, but just seeing what is possible on stock internals at this stage.

[3.0V6]

If this is on the Omega would a supercharger not be easier, there is space to squeeze one in - I wouldn't fancy the chances of getting a turbo in against the chassis.

[Andy H]

Is the GM 2.8T (as used in Cadilac, Saab, VX Insignia etc) based on the same block as the X30XE?

If it is you would probably achieve the best results for the least outlay by transplanting one from a rolled Saab or Insignia.........

[feeutfo]

If this is on the Omega would a supercharger not be easier, there is space to squeeze one in - I wouldn't fancy the chances of getting a turbo in against the chassis.

Came to a similar concusion personally, then thought fitting a lower geared dif would be easier cheeper and easier to insure.

[feeutfo]

Aren't the vxr's and vectras all front wheel drive hence different exhaust routing. Just wondering how to run a rear wheel drive v engine off one turbo?

[3.0V6]

If this is on the Omega would a supercharger not be easier, there is space to squeeze one in - I wouldn't fancy the chances of getting a turbo in against the chassis.

Came to a similar concusion personally, then thought fitting a lower geared dif would be easier cheeper and easier to insure.

Has this helped a lot?  Always thought circa 50 mph in first put a dampner on the 0 to 60 times  Did think about nitrous a while ago, its there when you need/want it but doesn't cost anything if you don't.

[humbucker]

its not for a rear wheel drive application, but it is an x30xe.

[Omegatoy]

somewhere in a [previous turbo thread are the pictures of my old turbo estate? this was a courtney conversion and it didnt have the compression lowered!!! however it did lunch the bottom end a couple of times!! cant fiind the thread at the mo but am sure someone will remember it?

[humbucker]

so courtenay just stuck a turbo on the stock engine in your estate without any other modification?!

[cem_devecioglu]

cooling will be the first problem imo as v6 already works too hot..

external oil cooler (so coolant flow increase also) and a higher rate coolant pump is critical..

and a custom map with a different ecu  :-/

ps car must be definitely manual..

pps wallet must be deep

[Liam]

Probably easier...

http://www.youtube.com/watch?v=kwZiKZQeSWo&feature=related

More videos by the same person. Sounds cool from inside.