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Rb25Det Or Rb30/25Det

Emmanuel1992

By Emmanuel1992,
in Engines & Forced Induction

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niZmO_Man Grand Master

niZmO_Man

Posted
Posted

Put a V8 in it.

Or, you can turbo your RB30E, it's been done plenty of times. Have a search, look on the R31 Skyline Club as well.

If you want twin cam, drop an RB25DET in and do the wiring. Worry about 3L bottom end later.

But since you want a fast reliable car, spend $20k on a 25/30 + all other things required to make it reliable.

GTScotT Grand Master

GTScotT

Posted
Posted

For a VL commodore :-) street use but powerful to make pretty good times on the 1/4 mile, so I want a fast realiable car

Cheap, reliable, fast,

You can only have two.

Actually he can have all 3, turbo the RB30E.

If it blows a replacement motor costs a case of beer, and we all know you don't need a DOHC head to make an RB30 perform.

Do the following:

high mount manifold (ask hypergear if BRAE make one and he can get you a discount)

50mm gate from hypergear

hypergear G3 turbo

fmic

tbe

adaptronic ecu (order from hypergear with your turbo and gate) + tune

decent injectors around 1kcc

regrind cam to a decent turbo profile (must be done to make decent power)

Totals about $6,000 if you shop smart.

Add another 2k if you plan to run an RB25 box. Another 1k for a clutch that will hold the power.

It may seem cheaper to slap in a stock RB25 but then you will only need to spend the above 6k on that to make it go fast once you are bored of 150rwkw.

I reckon that answers all your questions in one hit. Thread closed.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

OP, before even considering anything why don't you just get that RB25DET running in the first place?

I saw in another post you were asking about "turbo pipe"... get the car running first, then build your knowledge by reading up 10000000000000000000000 other threads about power.

discopotato03 Grand Master

discopotato03

Posted
Posted

Cheap dirty 30 because as far as the authorities are concerned it has a 30 from the factory .

Anyone who's anyone would be less concerned about a twin cam VL than an RB30 in a Skyline 33 or 34 .

Build it up the std cheap way (rods/NA pistons) and with a Neo turbo head , smaller chambers , the CR should be manageable .

More part throttle torque in a 30 than a 25 and being 20% larger is in theory doing everything the 25 does at 7000 from under 6 . VLs have tall gearing

Lastly you lose the dinosaur distributor / cap / leads with twin cam heads .

A .

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