Originally Posted by carmadbaker (Post 178915)

Technically yes, i believe the differences are the pistons, rods, cams , oil outlet in the block for the turbo, sump pan (oil return for the turbo) engine wise. It mounts exactly the same etc! They are the same externally and its only the turbo that gives it away, but there are differences beneath.

Originally Posted by rakester (Post 178886)

sweet guide,

Only bit I'm confused about as regards using a R400 GSI (non turbo T series) as a donor car is that can that engine be easily converted into a turbo lump? If so what parts are needed?

Originally Posted by Drew (Post 178947)

the only parts you would need are pistons (get some forged while its out) and the sump. the later blocks have the oil feed in the block, its got a blank in it.
everything else is the same/can be used.

Drew

Originally Posted by Drew (Post 178947)

the only parts you would need are pistons (get some forged while its out) and the sump. the later blocks have the oil feed in the block, its got a blank in it.
everything else is the same/can be used.

Drew

Originally Posted by carmadbaker

Of course an uprated head gasket and head stud kit would be of great use!

Originally Posted by carmadbaker

gas flowing and porting carries its advantages although perhaps not adding BHP by itself

Originally Posted by Drew (Post 179096)

thats in the 230bhp section. there is no uprated gasket and head studs are generally needed for over 18psi as it lifts the head. id put that in the 300+bracket.



porting adds power all over the rev range, its not as good on a turbo as a nasp as the air is forced in but its said to be 15% gain on a nasp and 5% gain on a turbo.

ive not seen anyone with an aftermarket inlet manifold (except myself ;) ). most use an M series inlet with the throttle body re-positioned to open the restrictive part of the manifold.

Drew