white2lsr

iTrader: (1)

Could I use an XR3i block to rebuild my rsturbo engine still running MFi? Obviously the turbo oil return would need to be sorted but surely that wouldnt be a problem???

studabear

don't see why not

cabrst

yes you can, as you say only oil return are diffrent

white2lsr

iTrader: (1)

So the MFi head will go on no problem, no issues with oil/water galleries not lining up??

XR2

Heads were all the same and oil and water galleries also. The only differences were - as mentioned - oil return

white2lsr

iTrader: (1)

Time to look for a low milage CVH engine to rob of its block. I think it is going to be a good plan as a lot of turbo blocks are needing re-bored these days and I really dont want to go down those lines!

XR2

Piston height of a turbo is different to the XR3i items...

Get new oversized turbo pistons and rebore your block. Believe me, you'll regret it not...

white2lsr

iTrader: (1)

hence why ill only be using the block, i have good internals

xr2wishy

iTrader: (2)

done the same myself once, only oil return needed.

nzwhiteboy

where abouts would u put the oil return? ive got a xr3i block here and a RS block but at the moment its a mission to find a RS block in New Zealand and i cant afford to rebuild it just yet so im going to use an xr3i block for a few months

kev new

iTrader: (1)

pretty sure there is a square bit on cast of block that requires drilling and inserting a drain tube prob araldite it in there.....been told its easy to do by an engine builder.

but if anybody remembers the turbo technics rs16I conversion the sumps were modified to take an oil drain instead of doing the block.