RB30 into a 300zx

[jas1088]

anyone know if a RB30 would fit into a z31 300zx without any major modifications of the engine bay, if not are there any alternatives (cheapish ones) to a new engine?

thanks, Jason

[CEF11E]

vg30et vg30det. straight bolt in.

[jas1088]

yeh i realised that but i cant seem to find any around, and not sure of cost. If anyone knows i'd very much like to know.

[[WLDCRD]]

drop an rb26dett in it haha

[jas1088]

theres two things wrong with that idea, i believe i said cheap and another i wouldnt be able to drive the bloody thing with this new legislation. :chairshot

would be nice tho hehe

[oz_cefiro]

Mate of mine dropped a R32 RB20DET in a Z31 with little dramas, so i'd be putting in a R33 RB25DET or if you have the funds RB26DETT.

[jas1088]

Mate of mine dropped a R32 RB20DET in a Z31 with little dramas, so i'd be putting in a R33 RB25DET or if you have the funds RB26DETT.

erm their still turbocharged, i need an n/a engine, have you not heard about the ban on turbocharged cars for P platers?

[BenA31]

well if ppl say a rb20det can fit into a z31. then i highly doubt there will be much trouble putting a rb30 in (i'm sure someon on the 300zx forums has done it, and if not just measure it all up and that will give u a fair idea, u'll probally need custom engine mounts, but thats no big deal. better still while the rb30 N/A is in, save ur cash for a rb25 head and all the works to make a rb30Det for when ur off ur p's. beats any rb26dett!! :boobies2:

btw if u posted this up in the general tech section u'll prob get more replies....

[jas1088]

thats the idea

[Sydneykid]

RB31DE:cheers:

[SteveL]

Nissan 200ZR was Z31 chassis with RB20DET engine:

http://www.fsinet.or.jp/~ranfa/myfairlady-e.htm

Most RB engines available have the sump bowl in the wrong place to drop into a Z31 chassis - the sump bowl is at the front in RB engines used in Skylines, but Z31 needs a rear bowl. Changing the sump is an option, but finding a rear bowl RB sump is not that easy.

Since you want an NA RB30, your best bet would be to get one from an MQ Patrol (I think that's right). These have a sump with the bowl at the rear, but its fairly deep so probably need some mods to fit. These are a carburetted engine (RB30S), but it would be a simple matter to bolt on the EFI gear from a skyline engine (R31). Bonnet clearance might be an issue as the RB30 is a fairly tall engine compared with an RB20 - fitting a twin cam head to an RB30 block actually lowers the overal height a small amount.

[Treva]

Yes you can fit an rb30 into a z31 things you will need are ( 200zr X-member, series 1 rx7 engine mounts and a modified front sump which will need to be made to clear the power steering lines and will need to get new power steering lines made due to power steering pump is on the other side of the motor will need to make radiator mounts due to the rb30 the original radiator won't fit also will need to run electric thermo fans too and also will need to make up a new radiator top line to have the filler neck high due to on the vg30et the filler neck is on the radiator and also on the rb30s it's on the radiator for the gearbox will need to make a gearbox mount and get a custom 1 piece tail shaft made too ) there is more like wiring but that's the easy part that's what I have done to make an rb30 fit into a z31

[GTSBoy]

Holy 14 year thread dig batman.

[tridentt150v]

[niZmO_Man]

Information is information. If it helps, it's worth sharing.

[GTSBoy]

7 minutes ago, niZmO_Man said:

Information is information. If it helps, it's worth sharing.

Yeah, that's why I didn't use a thread necro meme.