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Need Help, Rb20 Det Turbo Upgrade

Reecewashi

By Reecewashi,
in Engines & Forced Induction

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Reecewashi Rookie

Reecewashi

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I want to upgrade the stock turbo on my rb20 det. I have to motor in a 1983 mitsubishi sigma , got the motor from a r23 gtst skyline. i was consedering upgrading to the vg30 det turbo, from the 300zx, the single turbo( ball bearing )300zx, not the twin turbo 300zx.

these are the details and modifications done so far:

stock engine internals

18"x12"x3" front mounted intercooler

2.5" intercooler piping

3"free flow exhaust

IS300 Apexi N1 Exhaust

5frd manual gear box (rebuilt)

exedy street and strip clutch

ecu flashed

mitsubishi sigma 2000 rear end (diff) 4-1 ratio but soon to change to a r32 rear end

iridium spark plugs #9

walbro external fuel pump.

cost is a factor, that is why i am thinking of the vg 30 turbo,

so any help or advice, thanks

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hypergear Grand Master

hypergear

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I got a 71mm .60 comp / .58 65mm Turbine T3x internally gated turbo came off a SR20det test car. This is a very good responsive spec for a RB20det to make upto 230rwkws. Turbo's 5000KMs old, No shaft play, $700 with 12 month warranty. If interested send us a PM.

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Reecewashi Rookie

Reecewashi

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Well you want to upgrade...but what do you want?

180kw? 200? 220? 260?

Midrange? Top end?

Budget?

well i am looking at the 220 -260kw range, i was thinking ball bearing so i would get minimal lag but good top end, will the vg30 (45v3) turbo work well, someone has one for sale, any info on it? will it be a good upgrade to the t25 i have in now?

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Roy Grand Master

Roy

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The BB VG30 is pretty rubbish and unreliable. If ppl go VG30 they typically go the bush bearing as tales have it being more reliable. They are pretty laggy and dont make anywhere near the power you are hunting.

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femno Grand Master

femno

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A VG30 is pretty much the same thing as a R34 GTT turbo.

220-260 is a big gap. Which is it?

260 will render a large and laggier turbo. 220 could be had by a HKS2530 very easily with awesome midrange.

Just see the RB20 Turbo Upgrade thread, you will find what youre looking for in there.

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migs Enthusiast

migs

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ok fellaz where reece washi and my self come from (Trinidad& Tobago), its very hard to get those turbors like the r33 or r34 t28 enven the gt30 turbo is hard to get

but there is 1 fella we know is selling his vg30 t3 ballbearing 45v3 turbo

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