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Rb30det/tt Gtr Conversion Thread

rev210

By rev210,
in Engines & Forced Induction

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purpleskyline Apprentice

purpleskyline

Posted
Posted

thanks for the heads up on the plate, ( proengins)

well had a go at making a wedge, first attempt nearly lost my finger, with the grinder.

but got there in the end, god 2mm one side 10mm the other side then drill out the center to fit over the thread.

but all on now and straight, all gaps the same to water pump studs 4mm, so well chuffed.

piccy

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  • 2 weeks later...
shanef Grand Master

shanef

Posted
Posted

you cant use any other engine mount dave, because as it is there's 2 parts of fook all clearance between the bottom of the diff and the cross member. i posted a pic in here somewhere showing how close it sits

Marko R1 Grand Master

Marko R1

Posted
Posted
so, rd28 engine mounts solve the bonnet clearance issue? or is there something else? ive tried reading it all but no definative answer.

if u are enquiring about an rb30 in a gtr, u need to use the same mounts. u can slot the mount holes but not recommended due to lack of clearance

  • 2 weeks later...
  • 3 weeks later...
N1GTR Grand Master

N1GTR

Posted
Posted
lol i gain an extra 200kg (stagea) over a gtr but my bonnet shuts without an issue with covers on and twin turbo pipe on :D I'd still rather lose 200kg and need less power lol.

I have been thinking about running twin gtrs turbos now instead of -5s, i think they are -10s from memory? I remember someone on here runs them on a 30 setup and wondering what the drivability is like? i want around 500hp at wheels mark on 18-20psi. Im running a freshened bottom end but still stock rods and duratech cast pistons, so still around the 8:1 comp ratio. I dont care if the thing blows to bits i wanna see how long it will last :down: My head is stock 26 with no port work and stock cams at the moment which wont help either, but bolt in cams are always a future option.

Ive got GTRS's, i want to swap them for dash 5's in the next month or so.

What rear does your set have?

Drivability is pretty much perfect as Marko said. Only things id change are turbos and cams

ok cool. just gotta figure out how im going to fit my s372r borg warner turbo in there...

Harden up mate, iraqi sand dune nissan patrol racer style right out the bonnet level with the roofline :laugh:

  • 1 month later...
cactus Collaborator

cactus

Posted
Posted

Maybe someone get shed some light on my current set-up and the issues I am having...

Im running a built RB30 bottom end with standard 25 vct head. The old set-up was running a GT3082r (0.82r) with 6 boost and supporting mods and made 280rwkw @ 17psi. This is through a built 5speed auto, fully manualised with 4500rpm stall.

I then changed to a GT35R with the same mods. On 11psi, the car made 246rwkw @ 7100rpm. We then upped the boost to 18psi, however the car only went 260rwkw and stopped making power after 6000rpm (sharply).

Any ideas what this could be? A few people have mentioned valve float but I also dont know how to verify this.

cactus Collaborator

cactus

Posted
Posted
What size rear housing on the 35R and what size exhaust? cat? sounds like a restriction..

.82r ... its the exact same housing as the older 30R but just machined out to fit the larger exhaust wheel. No cat, just a muffle towards the end of the system (being a 3" mandrel).

  • 2 months later...

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