R33 Rb30 Conversion

[Scooby]

The GTR/GTS4's run a block/sump adaptot plate so it also lowers the sump down slightly.

Anotonys GTS4, everything is VERY close. The bonnet had to be cut as the cam belt cover was touching.

my adapter plate is only about 8mm thick, hopefully there was more clearance than that with the RB26. just had a look in the engine bay, the steering rack looks higher than the crossmember.

Edited February 13, 2007 by Scooby

[r33_racer]

and i thought the gtr conversion wasnt that much more difficult then a gtst...seems like there is more to it then meets the eye!

[shanef]

shanef i have seen spacer plates put in between the crossmember and the chassie rail befor to get the motor down lower

thats one thing to consider if i dont sort this problem out...

Shane, I have cut about 100mm piece out of the one of the under bonnt supports where it hits the cam belt cover, now my bonnet shuts and just clears.

What turbos you using there?

the turbo's u see there in the photo's are the R34 N1's, i just put them on with the dumps attached to see what type of clearance i had/didnt have between the firewall, which it seems like i dont need to mod them! (still gotta double check) but im swapping these turbo's for a set of Trust T618z

Hi Shane, not sure what's going on there. Cross member clearance shouldn't be a problem, the deck height is increased at the upper end of the block from the top of the water pump upwards. And the bonnet should well and truly close if you can fit a strut brace under there, the're a lot higher than 38mm above the cam covers. The engine is supposed to be on a bit of an angle but the clearance should still be good. Try looking on the GTROC UK site for comparison pics

http://www.gtr.co.uk/forum/upload/52458-rb...ight=r32+combat

at the risk of stating the obvious it seems that the whole engine is tilted way to far up at the front and that's what is causing the sump to hit at the rear.

thanks mate, i frequent those forums alot, they're a great bunch hey

the things that got me is that the rb26 engine mounts are sitting flat on the engine mounts on the rails! but the fronts tilted like a mofo!

The GTR/GTS4's run a block/sump adaptot plate so it also lowers the sump down slightly.

Anotonys GTS4, everything is VERY close. The bonnet had to be cut as the cam belt cover was touching.

adapter plate is only 10mm, so pretty much fark all (surely thered be better clearance from factory than 10mm)

i'll go outside and grab some photo's.

[shanef]

took these pics just before:

RHS Mount

LHS Mount

The area where the diff/sump rests on the cross member

How far the engine is lifted at the front

[sky30]

Shane, have you got the mounts bolted to the block using the correct holes in the block, i think there are 6 holes where the mounts can be bolted up.

i will take a pic of mine if i remember 2moro.

[shanef]

im fairly certian they are, as i farked around for a good hour or so trying different combo's between the gtr and rb30 mounts to fit it properly, but i'll certainly double check that when i pull it out.

[Bl4cK32]

have u got the GB in and bolted up yet? That tilts the motor up in the rear a bit...you motor is sitting way high in the front, and too low in the rear...

[SirRacer]

ive read a few times that rx7 series 2 engine mounts lower the engine alot. ive never even seen these mounts so couldnt confirm nor comment however if someone wants to investigate that would be interesting

[Spoolup]

qik visit back to my brain straining issue.

Pulled the wastegate off, checked that it is sealing, checked that it is working with compressed air, all is fine. No diaphram leaks and no leaks on the intake side.

Still it will not boost past 0.7 bar. Ive put a 20 psi spring in, tried disconnecting the gate altogether, boost pressure to the bottom of the gate, to the top of the gate to both top and bottom.

Makes no sense at all ????

Help

[shanef]

broken hose somewhere? cooler pipe not properly sealed? its escaping somewhere!

[Spoolup]

nope - checked the intake side from turbo to plenum - holds 1 bar pressure no problems

broken hose somewhere? cooler pip not properly sealed? its escaping somewhere!

[r33_racer]

extremely weird i must say.

[Spoolup]

annoying part is - that it was running consistent 16 psi previous to me removing the spring the first time

[Craved]

annoying part is - that it was running consistent 16 psi previous to me removing the spring the first time

makes me not want to remove my 1.2Bar spring from my new Wastegate

definately a puzzling thing

[GTRgeoff]

Nothing else changed at the same time? this is a really troubling problem. How is the fuel pump pressure now? It's about the only other thing I can think of right now.

Engine with the machinist this morning. Aust post suck for being so slow but all goodies now in place for extreme funness!!!!

[Spoolup]

fuel pressure is all fine at .7 bar - cant get it over that to find out :-)

Im going to block off the wastegate hole in the manifold tomorrow and go for a very cautious drive - at least it will narrow down my troubleshooting.

[Scooby]

im fairly certian they are, as i farked around for a good hour or so trying different combo's between the gtr and rb30 mounts to fit it properly, but i'll certainly double check that when i pull it out.

i'm voting that there's some funnyness with the mounts.

[shanef]

Nothing else changed at the same time? this is a really troubling problem. How is the fuel pump pressure now? It's about the only other thing I can think of right now.

Engine with the machinist this morning. Aust post suck for being so slow but all goodies now in place for extreme funness!!!!

they wouldnt be 2860-10's would they geoff

i'm voting that there's some funnyness with the mounts.

yeah more than likely, will find out on the weekend i spose.

cheers for the ideas though guys

[GTRgeoff]

Stock turbos Shane...well the housings anyway. See it says AR .42 so legal as

Brad, good luck with that and be careful.

Scooby, I don't have your number to return your call.

[Roy]

How does the weight of the Spool rods compare to the Eagle and Rev rods?