The Ultimate Rb25det

[trent26]

hey guys, whats your opinion on the ultimate package for the rb25det

what would you use in it?

pistons

rods

bearings

bolts

oil pump

cam shafts

head work

manifolds inlet & exhaust

injectors

turbo Internal gat and external

just opinions guys..

Thanks

[zebra]

Have a look at NYTSKY's build thread, its in this section somwhere.

[TiTAN]

9.5:1 - 10:1 comp pistons

spool rods

acl bearings

nitto oil pump

tomei poncams

lots of head porting + oversize valves

hypertune intake + etm exhaust manifold

nismo 740cc injectors

GT3076 0.82 external gate

3.5" exhaust from the turbo back

Tuned on E85 or 98 with a water meth injection kit.

[joeyjoejoejuniorshabadoo]

stock motor - twin scorll 3076 with 6boost manifold and GTR plenum.... tuned on e85... responsive 350rwkw and well cheaper than a build that can blow anyway.

you would have to pop 3 motors to cover the cost of a forged build

[GUN_METAL_GTR32]

go a 30 bottom end

forgies

rods etc

serious head work

billet oil pump

big cams

gt35r minimum

with twin external gates

thats how i would do it

[zebra]

Or a Tomei Genessis RB25

[SimonR32]

  joeyjoejoejuniorshabadoo said:

stock motor - twin scorll 3076 with 6boost manifold and GTR plenum.... tuned on e85... responsive 350rwkw and well cheaper than a build that can blow anyway.

you would have to pop 3 motors to cover the cost of a forged build

x2

You would struggle to find someone who builds a RB better than Nissan

[trent26]

  joeyjoejoejuniorshabadoo said:

stock motor - twin scorll 3076 with 6boost manifold and GTR plenum.... tuned on e85... responsive 350rwkw and well cheaper than a build that can blow anyway.

you would have to pop 3 motors to cover the cost of a forged build

yeah, excellent point, wouldn't think it would be as reliable as a built motor?

[NickR33]

money no object? lol

Tomei 2.8 kit (crank, rod, pistons)

Tomei oil pump

standard head with some baby Tomei Poncams... GTR plenum + ITB's

big baffled sump

twin: -5's or HKS 2530's

single: something in the 35XX range, twin scroll with 6 boost mani... or T04z if you like top end

[PsYLoR]

Reliable comes down to the tune not whats in the engine.

[TiTAN]

whats in the engine does have to do with how reliable it is from a power perspective, you can only push OEM parts so far before they just werent engineered to deal with loads that large.

[roadworia]

how come nobody mentioned solid lifter conversion?? not worth doing??

[jrm]

Use NEO RB25DET? Has solid lifters from the factory?

[TiTAN]

  roadworia said:

how come nobody mentioned solid lifter conversion?? not worth doing??

if you were thinking of going massive cams sure, but everyone has said a mild setup so far (good response vs power made) and for that kind of engine cams like that are just going to move the power higher in the revs where you dont need/want it with that setup.

[NickR33]

Best thing about using the 25 is the VCT... if you lose it you may as well just drop in a 26 put on a bigger turbo and rev it to 8000-9000rpm, making up for less response down low

best of both worlds: Neo head with VCT + solid lifters = bigger rev limit than 33 RB25 but with good response down low

[jjskyline79]

Just like this guy built his

[dori34]

  jjskyline79 said:

Just like this guy built his

oh my, any specs on this thing???

[jjskyline79]

Im sure i can get them but remember its British and we dont do things right according to you lot!!!! JOKE

[femno]

Strap a T51R on it???

What a stupid thread.

WTF are you gonna do with the car and what do you want out of it?

No point to this thread unless you know these things.

[NYTSKY]

That GTST is a 2.8 not a 2.5