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RB Sixes into DR30 ....

discopotato03
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Adam_RSX Proficient

Adam_RSX

Posted
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I wasnt comparing the weight of an SR to an FJ.Pick up an SR block and then an RB.......

What needs fabrication?My FJ makes 400bhp with stock throttle body,intake and exhaust manifolds and stock cylinder head.Im scared to think what power it would make with mods. :headspin:

Soi you really only need a bigger turbo, IC, injectors, exhaust and an ecu to get them going?

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discopotato03 Grand Master

discopotato03

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No I want the 3 Litres . RSX84 you mentioned wireing issues . Did you use the Nissan computer and if so was it difficult to splice into the HR30's electrical system ? I do have an SMC but would prefer a Nissan set up . Do you know where I could find a wireing diagram in English for the R32RB20DET .

Thanks heaps Adrian .

PHaT MR30 Grand Master

PHaT MR30

Posted
Posted

how you guys going with sump clearance? what about closing the bonnet?

thats the biggest problem with my S13, mounts have been lowered, sump hasn't been modified and sits on the crossmember, front of the sump is practically touching the sway bar. starter motor is very close to the steering column. all these little things are really starting to annoy me.

Boof Mentor

Boof

Posted
Posted
There are heaps of aftermarket bits for RB's which can be had reasonably cheaply whereas everything for the FJ has to be fabricated one off and costs a bomb

Damn dude u must be shopping at the wrong place!! I got a KKK26 meant to be good for 400-450ps at rear wheels, and a hks high mount manifold and 32mm external wastegate for $1000...JUst got a wolf 3d V4 pro for $700 as well last night, things arn't expensive for the FJ, you've just gotta look around a bit harder then RB/SR things

V8skylineMAN Grand Master

V8skylineMAN

Posted
Posted
Nope , been fighting with my FJ for 6 years . Proven fact , cannot get 3 liter torque at low revs from 2 liters - not possible .

course you can...supercharge.....

why not build a supercharged and turbo charged FJ......guys have done it with 20V corolla's and nissan did it with the march gt super turbo ( i think that is what it was called) way back in the late eighties(i think, again)

Ghostrider Grand Master

Ghostrider

Posted
Posted

I have recently finished building an RB30/25 DET hybrid, but am shelving it for now to investigate an L Series 3.1L Stroker for my PNV.

Just imagine a BOG STOCK HR30 Paul Newman Version, complete with L20A engine number, but 3029cc, T04R, 3 inch + system, about 20 psi, giving about 300HP at the treads.

Ghostrider Grand Master

Ghostrider

Posted
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what combination of top end bits did you use for the RB25/30 . are you interested in selling by any chance . Just a point of interest . the LD28 rods look identical to intercooled FJ turbo .

Cheers  A .

Answer to question about selling: No Chance, going away for Ron!

And top end bits:

RB25DE non VVT head, Trust inlet plenum, RB25DE throttle body, Gates T866 timing belt, HKS exhaust manifold with ext wastegate.......

Injectors, wastegate and turbo size etc, depends on how much HP you want,

BUT!!!! the biggest problem is not producing the HP, it's getting it to the ground without wheels spin. Your better to have less HP and no spin, than have heaps of HP and uncontrollable wheel spin everywhere.

discopotato03 Grand Master

discopotato03

Posted
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Curses . I once also considered a monster L28 but was told that the head would impose unsolvable limitations . While I agree that at least it will bolt back in I would be concerned with chamber shape and turbo under inlet manifold . And man if I had the RB30DET it would not be sitting on the floor !

Do you have any pics of an RB in a R30 Skyline , particularly round the front cross member and gearbox mount . I think mine is going to have clearence problems around the front of the inlet manifold . Sadly the GTR manifold won't fit the 25DE/DET head and I probably can't afford an RB26 head . Even if I could I don't like the shim under bucket valve clearence adjustment - did someone say like FJ20 ?

Before I go what combination of loom computer and injectors did you have in mind for the RB30DET . A few go with RX7 injectors , RB20DET loom/sensors + PowerFC and Z32 MAF .

Cheers A .

Ghostrider Grand Master

Ghostrider

Posted
Posted
Curses . I once also considered a monster L28 but was told that the head would impose unsolvable limitations . While I agree that at least it will bolt back in I would be concerned with chamber shape and turbo under inlet manifold . And man if I had the RB30DET it would not be sitting on the floor !  

Do you have any pics of an RB in a R30 Skyline , particularly round the front cross member and gearbox mount . I think mine is going to have clearence problems around the front of the inlet manifold . Sadly the GTR manifold won't fit the 25DE/DET head and I probably can't afford an RB26 head . Even if I could I don't like the shim under bucket valve clearence adjustment - did someone say like FJ20 ?

Before I go what combination of loom computer and injectors did you have in mind for the RB30DET . A few go with RX7 injectors , RB20DET loom/sensors + PowerFC and Z32 MAF .

Cheers  A .

I had a few concerns with the standard inlet of the RB25 fitting and that it came back across the engine, so the decision was made to buy the Trust inlet plenum, as it was only $200 dearer than a custom & it was tried and tested. It was also easier to do the plumming for the FMIC with the trust inlet

Series 4 RX7 550 injectors and all as you suggested, but maybe a re mapped stock ECU.

My sources tell me mounting the RB into an R30 is simple, goes on the stock 6 cyl cross member and use stock RB30 mounts.

My thoughts for the big L28 is to avoid emissions testing & further engineering in NSW, plus, as I have a limited edition as in PNV, I thought it best to keep it looking stockish and the 3.1 Stroker would be different, give the power to have some fun and look stealth to the ill informed.

The head limitations, I will probably get over when I flow the head. An N42 is planed, relieved a fraction to get the compression down to about 8.2:1 so that city drivability won't be to compromised off boost.

The heat issue will be adressed by HPC coating the turbine housings and manifold. Just having a big HP L series is a great temptation, although it ain't gunna be easy, the L28 uses a different sump, oil pick up etc system and the modification could be a real problem, fitting it into an R30 engine bay may become impossible.

Just sourcing the parts is not the end, hence a lot of thinking, and asking questions before this project will take off. The 3.1 stroker suffers from harmonics problems at 7200, has a tendancy to destroy the half moon keyway on the front of the crank shaft and likes throwing flywheels, so the crank has to be modified to remedy these problems.

Boof Mentor

Boof

Posted
Posted
there was a blue over silver mr30 sedan that sold for $21,000 mid last year that ran the rb30det. there was a web site set up with the start to finish process he went through..

It wasn't an rb30det,was just an RB30ET...It was from adelaide and i was fortunate enough to get a ride in it at one stage...It hauled ass :D:( I've got the link at home for it (its a mate of mine) i'll post it when i get home if i don't find it here at work whilst searching for it!!

Ghostrider Grand Master

Ghostrider

Posted
Posted
Are there any differences between 6 and 4 cyl (FJ20) cross members ie where engine mounts go ?

Where did the inlet manifold come from , is it the top half only . Price ? pics ? It would have been intended for an RB20DET wouldn't it ?

Thanks , A .

The 6 cyl crossmember is swept back towards the rear by about 4 inches, give or take a foot.

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