I have a NA RB30 in the garage at the moment, I just pulled the head off and it looks nearly new inside. Its done 165,000kms. There are hone marks in the bore, everything is clean as, etc.
Just curious - I have everything I need for a cheap rebuild
RB25 DET Head
RB30 NA block
Side mount manifold (Greddy copy)
GT3037 (making 314rwkw at 18psi), and have a spare 0.82 rear
RB26 Oil pump (bought new from nissan about 2 years ago, done 20,000kms on a RB25)
If I stripped the block, acid bath, new big and main bearings, RB26 oil pump, oil control mods, VCT lines, etc, and re-used the Standard NA pistons, would I be able to make about 320rwkw reliably?
Or would I be better off grabbing a set of ARIAS forged pistons or something like that and setting the compression to 9:1 and using the standard rods?
I still want to rev the engine to 7,000rpm. I'd love to build a 9,000rpm monster but that will just cost to much money, and the turbo runs out of puff anyway to make the power above that.
Not after massive power, just good torque, and about 320rwkw in the top end, and a reliable engine.
This will be going in the R33 GTS-T S2.
the reason I don't want to go all out is I want to upgrade the entire car at some stage this year (towards the end) and don't want to pump a load of money into it for the next buyer to enjoy. But as long as it is reliable, then they are still getting as new car.
Oh, and I am due for a 100,000km service and rebuilding the engine seems to be better than spending $1500 on the service alone.