RB Sixes into DR30 ....

[Ghostrider]

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  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!!

Faaaaaaaaaaaaaaar out!

That changes my mind, but today the L28/3.1 stroker got expensive with all the bits and no available pistons suitable for turbo.

Think better plan is go the RB conversion, but keep all the stock PNV bits, just in case needed for return to standard.

Still could be just as rare.

[Boof]

I really would like the link to that site , if you have it could you post it please !

Thanks A  .

Your wish is come true...http://nissanking.sphosting.com/r30/index.html try that link see if it works

[discopotato03]

So much to research . I thought bonnet clearence would be a problem (3liter twin cam) so looked into GTR bits . Turns out that RB26 manifold bolt paterns are different so 20/25DET exhaust manifold won't fit . If anyone knows how they differ please tell - thoughts of adapter plate .

Otherwise its back to early 25DE head on RB30 NA bottom end with RB20DET loom and PowerFC . Injectors could be R32 GTR (440cc) with spliced in resistor pack . I hate this bit but the 120 deg bend off the throttle body will point back towards the intercooler outlet .

Am going to look into the R31 front cross member to see if it bolts into R30 . Strip your own wreckers are good for finding out this stuff . If it works it'll get me a power rack and suitable controll arms with replaceable ball joints and RB type brackets . If bonnet clearence becomes a problem I'll look into spacing down the cross member radius arms and strut feet - thats after getting the sump as close as practical to the cross member . Can anyone see any holes in this plan .

Thanks Adrian .

[discopotato03]

Ghostrider , I came across an interesting site called Handy Dandy Denny (stupid name) from the US about Zeds . HE said they used either Z24 or KA24 pistons in stroked ( LD28 crank) L28's . The current 4 cyl Navara uses a low compression like 8.4 KA24 twin cam motor , these pistons could be worth looking into .

[Ghostrider]

So much to research . I thought bonnet clearence would be a problem (3liter twin cam) so looked into GTR bits . Turns out that RB26 manifold bolt paterns are different so 20/25DET exhaust manifold won't fit . If anyone knows how they differ please tell - thoughts of adapter plate .

Otherwise its back to early 25DE head on RB30 NA bottom end with RB20DET loom and PowerFC . Injectors could be R32 GTR (440cc) with spliced in resistor pack . I hate this bit but the 120 deg bend off the throttle body will point back towards the intercooler outlet .  

Am going to look into the R31 front cross member to see if it bolts into R30 . Strip your own wreckers are good for finding out this stuff . If it works it'll get me a power rack and suitable controll arms with replaceable ball joints and RB type brackets . If bonnet clearence becomes a problem I'll look into spacing down the cross member radius arms and strut feet - thats after getting the sump as close as practical to the cross member . Can anyone see any holes in this plan .  

Thanks  Adrian .

Hey Disco,

Nothing wrong with RB25/30DET, that's where I'm going now. Those KA24 pistons are to high a comp with 89mm bore, but it was getting expensive (L28 stroker), as I had to acquire all the bits again.

My RB25/30 DET has 87.0mm bore, 'O' ringed block, Wiseco forged pistons, flowed & ported RB25DE head, HKS cast exhaust manifold with 45mm ext gate into 3.5 inch dump, Trust/GReady inlet plenum/manifold assembly, S4 RX7 550 injectors, RB25DE throttle body, Z32 AFM, custom air box, HKS full flow air filter, FMIC and presently a flowed T03, but a Garrett GT3540 is coming.

All driven by a re mapped R32 ECU. Maybe an Apexi Power FC will come later or a fully programmable ECU, depending on HP requirements.

The exhaust manifold, turbine housing, air box and all connecting pipes are being HPC coated.

All this should give me about 350Kw at the treads on 18/20 psi boost.

The R31 cross member is very close to same width, but the mount holes are wider apart. If you have to go through engineering you will need to fit anti crush sleeves into the chassis rails. The idea is good, but it will take some f@#king around getting it right and quite frankly, I didn't think it was worth it, as I already have a full set F & R of JIC Coilovers for the R30 and DR parts (brakes) just bolt on.

Also the R31 track is 24mm wider.

I might look at it later again after i'm registered but not before, and after, I still may not worry, as I have 2 spare power steering boxes.

There are far more important things than rack & pinion steering.

[discopotato03]

Thanks Ghostrider . I have also been looking into GT3040 and GT3540 . The Ford XR6T uses a GT3540 with integral wastegate . The compressor housing AR is .50 but not sure of exhaust side AR . Suspect 1.06 because of the four litre donk . This may be the answer for those wanting five litre power rather than six .

Am keen to see the pics of your HKS cast exhaust manifold and Trust/Gready plenum . It also looks like you know someone who can re program the Nissan ECU in Sydney .

Your project will probably get moving before mine as I need to sell the spare FJ bits to make room for RB stuff . The parts gathering will start soon , when I work out which head and manifold combination best suits me .

Cheers A .

[PHaT MR30]

ive been offered a block (don't know how bare) to replace my current one and rebuild/freshen up.

what sorta things do i need to know about it to see if its worth getting?

[discopotato03]

RB30DET will almost certainly have RB26 Head and Inlet Manifold . My reasons are , non VVT RB25DE = $950 GReady Inlet Manifold (which I've been told by several tuners dosent work the best) = $1050 + better injectors = $480 all up comes to nearly 2.5G with lots of junk to store . RB26 for $2000 + gives you better cams / springs / porting / injectors / sodium cooled exhaust valves AND the 6 throttle inlet with probably cooling benefits ie designed to live on higher output engine . I'd bet it will breath more easily and give more power per pound of boost so not requiring mega boost levels . The RB26 ecu/loom could also run it although with 2 MAF's .

[discopotato03]

Has anyone tried to use the aluminium RB26 engine mounting brackets ? They are light and strong but don't know if suitable for R30 install .

Cheers A .