RB26 into R34GTT

[Abo Bob]

Forgive my ignorance but the bottom end for an RB31 comes from what? A VL Turbo? R31?

[Sydneykid]

Forgive my ignorance but the bottom end for an RB31 comes from what? A VL Turbo? R31?

Spot on, RB30ET (Turbo) or RB30E N/A, plus forged bottom end (rods and pistons) with 87.5 mm pistons = 3068 cc's. Hence RB31 (3.1 litres).

[IanH]

Sydneykid - Unfortunately I'm having to sell her as soon as she's fixed so I need to do this as cheaply as I can but the RB31 engine could be my next project I think!

Doughboy - Thats the price I've had from 4 different places. Most quote AUS$4000 just for the Labour (45hrs x $90/hr) and a further $4000 for the crank!

I can get a RB26 for $5000 and get it fitted for free plus I take everything off my old engine - Turbo, Injectors etc which will get me some money back too.

I'll need to get some stuff for the new engine (another AFM/Filter, GTR downpipe, intercooler piping, ECU & loom etc) before I get started.

[IanH]

Ed - No oil for 4km's = Broke bottom end with a loud knocking sound and low oil pressure (when filled with oil again) so I'm guessing Shells/bearings, crank, oil pump and god knows what else!

[ed]

If you're gonna sell it once it is fixed then just rebuild the thing.

Might be better if you know exactly what needs replacing first and if you can still use the block?

[666DAN]

What size turbo is suited to the RB31? Would a TO4E be a good start for a smaller budget?