A sump question

Well if i'm right in thinking the only difference is the hole for the turbo oil drain on the crank casing then it gives me something to work with,just incase i go down the 'twin turbo' route for instance!!??

How far are you off firing that one up DG?

Yes, if you go twin turbo, then you won't need that crankcase, as you will need to have two turbo feeds, one either side. My spare sump has two return spouts welded into it...

Im a little way off yet, theres a few things that need sorting on the car before it goes on the road before its ready, big brakes, suspension, all new subframe, wishbones etc...Ive got a 610 front end to be fitted too but that may have to be afterwards...

DG wrote
Yes, if you go twin turbo, then you won't need that crankcase, as you will need to have two turbo feeds, one either side. My spare sump has two return spouts welded into it...

Im a little way off yet, theres a few things that need sorting on the car before it goes on the road before its ready, big brakes, suspension, all new subframe, wishbones etc...Ive got a 610 front end to be fitted too but that may have to be afterwards...


You are a very busy man by the sounds of things!!!
Are you going to use a custom intake manifold,A610???

No no, all the twin turbo conversion is being fitted to a bog standard 2.5 lump first so I can make comparisons against modifications. It will be a true bolt on kit for a standard GTA so anyone can use it.

Then I'll work from that, but no more than cams and intake.

And thats all if the actual physical engine can actually take it...

A610 inlet manifold won't fit the 2.5. If I go for a new intake I would go twin plenum which would be far better being biturbo and make each bank of the V completely seperate (intake and exhaust wise)