i have the gt3540 going onto my r33 and was going to do the rb25/30, but im going to wait and see how it goes on the rb25
i was going to buy this for the combo
rb30 bottom end from series 2, ( Speak to MIT16 on calaisturbo.com.au) s2 block that has been honed, decked, and had the grub screws on the crank done, very very good nick. Its also on the std bore size still. There was over $250 in work done you can have the lot for $200 if interested .........cheers brett Ps im in toowoomba.... ph 0408305170
Brad from spool imports has a rb25 head with plenum for 590, and can get it all cleaned up cut valves, face valves shave head blah blah etc for a cheap price. So its all new. Also depends if ya want to keep the vct or not, but if ya dont want vct, he can have all the galleries welded up etc.
Brad also has a package for rods and pistons, so it would be good to speak to him ( Spoolup is his name on this forum, or www.spoolimports.com )
rb26 or rb30 head gasket
r33 rb26dett oil pump and water pump
Buy the jun crank collar for the smaller diameter crank of the rb30 ??
I guess you will be getting a new exhaust manifold ( speak to kyle 6boost off calaisturbo.com.au, he is most probably on here aswell)
Then its getting the block and crank balanced, bored out for the pistons, putting it in the car, hooking up all the wiring ECU
There will be other minor things that you will have to get, but hopefully i have said all the basic stuff to get it all going.
But people to speak that i thought were helpful and know what they are talking about are LTHLRB, Sydneykid, Cubes, Spoolup
There are alot of ppl on here that have done it, but there just a couple of ppl that i know who have.