its probably been asked before but i coulndt find it anywhere so sorry if its on here somewhere but i wanna know if any RB30 block crank and rods and even head are the same on all holden powered RB30's including N/A??? o have a series 2 calais turbo and wanna spare engine to build up and wanna know if i can just go buy and old RB30 and use those parts and put forgies in it and stuff or should i use the engine in my car now to build???

imn ot exactly sure what ur asking but i think i do, the block (besides s1 no lines for turbo etc) the crank the rods bears etc are all exactly the same. but there is debate im told that the gudgen pin bearing is made from different material to turbo rods. either way they both do fine. so your answer would be ok but only for the bottom end the top ends are different hope i helped u

the actual motors are the same,except for the turbo having a different oil pump,pistons and cam.you also need to make sure the block has plug where your oil return line goes into the block,and where the water line come from.supposedly s1 na motors dont have this. obviously you would need to swap manifolds and stuff

ps im doing this atm

yeh your right bout the pump as well forgot bout that one

arr thanks for the info. what i wanna do is buy another engine and build it up with forgies and stuff then do a engine transplant. u would get new gudgon pins when ya brought pistons wouldnt ya??? and if i use the n/a head and got it ported and stuff it would be the same as the turbo wouldnt it i would be getting a different cam and stuff so it should be ok hey???

dunno about the pins dude.sounds like all you need is the oil pump. nissan gtr pumps are about $500 new.get one

Im sure the NA head has different cams and i think also the head makes the compression sweet for turbo. if u are worried about the head get a RB25 head on there it would probley cost either the same or less then getting the NA head up to Turbo spec or better.

Quote: Originally Posted by HYBRID VL Im sure the NA head has different cams and i think also the head makes the compression sweet for turbo. if u are worried about the head get a RB25 head on there it would probley cost either the same or less then getting the NA head up to Turbo spec or better. i dont think so mate.a 25 head is gonna cost heaps more.