Cheapest Way Into An Rb30

[dave_1]

Basically what im asking is, if i start with a stock good nick rb30 bottom end, what is the cheapest way to get it running in my 32. ie using whatever i can from the 32/rb20.

I can remove block and fit myself, do basic wiring etc.

Your thoughts greatly appreciated, obviously not chasing mega power out of it.

[Adriano]

R32 rb25de head/inlet manifold, use your exhaust manifold/turbo, rb20 ecu and wiring, remap when you want more power, Although the turbo will be a major restriction

[R34NRG]

i guess you can avoid getting forgies if you find yourself a mint condition bottom end

[dave_1]

my rb20 is running a rb25/r33 turbo and i have an SAFC too.

[TiTAN]

You will find the stock turbo will seriously choke the 30 when it gets up around 5000rpm.

[R34NRG]

and the SAFC will need to go. dont half as doo the job and get a monster rb30 conversion and only run a SAFC.

and you defiantly will need a bigger turbo. i suspect you running into alot of boost creep/spiking issues with the 3L bottom end and running such a small turbo. at least go for a gt30

[bubba]

25DE head, good condition bottom end (get the crank reground just for peace of mind, cost me $120), I've got forgies but I got a good deal on a block/piston/head setup.

Use everything off your 20 (25DE intake manifold ports are slightly larger but it's only a bee's dick worth).

I'm running a 25s1 turbo which I had on my 20. Becomes a major restriction at about 5800rpm where it falls over harder than it climbs. Could have lent on it a bit more but would have only caused to turbo to fall over sooner.

Making a super torquey 183rwkw with 12psi by 2200rpm.

I had it running on the standard ECU but needed to use a group-buy remap chip I had because it was hitting R&R pretty much straight away.

I was also maxxing the AFM at about 6000rpm.

So, I got myself some 550cc injectors and a z32 afm and had my ecu remapped with a bit of a tune to throw in a bunch of fuel down low so it didn't lean out when it came on boost hard.

Quite fun to drive but should be a lot more fun with the GT35R strapped on the side

As far as wiring goes, if you use an R32 RB25DE head, everything plugs straight up. We did my conversion in a weekend and I drove it home very early Monday morning on the stock ecu

Edited June 4, 2008 by bubba

[dave_1]

thats what i was after. Sounds like a good plan

[bubba]

Good luck