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Stock R34 Gt-t Series 2 Tuning?

jaggmax

By jaggmax,
in Engines & Forced Induction

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jaggmax Apprentice

jaggmax

Posted
Posted

Hi everyone :D

I'm new to the forum and to being a skyline owner. I've brought a nice Manual R34 GT-t through a broker and i'm currently waiting for it to come into australia. The only thing that i know about it is that it will need a major service done at 100,000kms (its done 99)

is there anything else that i should know?

money is tight now too so i'm also wondering if the RB25DET NEO in the year 2000 model of R34 has been detuned like the GTR's.

I don't want to play with the turbo too much if possable as i don't have the money to spend if she blows.

how much "reliable" power would i beable to get out of her from just a dyno tune?

thankyou an advance for your help :)

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Moodles2 Grand Master

Moodles2

Posted
Posted

GTRs have RB26DETT and are not NEO either. To tune it, first you need a tuneable ECU (Nistune if it's available, Apexi PowerFC another popular choice). With the stock ECU you will be able to up the boost but you'll need a electronic boost controller ($300) or a cheap manual boost controller ($20-$80) and set the boost no higher than 10psi as the stock turbo (I think 10psi is fairly safe for that turbo) does not like boost at all.

Major service you're looking at about 1k minimum in parts + labour alone.. oil change, oil filter, fuel filter, brake fluid are part of SEVS scheme by the compliance shop.. though they use cheap fluids to do it though.

This is what a 100k service kit looks like (and looking at about $600 in labour to have it done): http://www.kudosmotorsports.com/catalog/ni...25det-p-91.html

mad082 Grand Master

mad082

Posted
Posted

pretty sure the stock boost on a r34 is the same as a r33, which is a low/high setup of around 5 and 7psi. the first thing you could do after you get the car is ground the solenoid to give you 7psi all the time (stock setting only gives you 7psi over 4500rpm)

as was said, you can't tune the stock ecu without altering it first (putting in a daughterboard) or going a full aftermarket ecu

jaggmax Apprentice

jaggmax

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Posted

crap, still a few more grand then. aftermarket ecu it is then. From what i've been told it may be a nylon turbo so i deffently wouldn't want to be pushing it. apparently they spool up quicker but wear faster too.

thankyou for your help :(

mad082 Grand Master

mad082

Posted
Posted

it is only the compressor wheel on the turbo that is nylon (series 2 r33 and r34's have this). the exhaust wheel is ceramic and that is the weak spot for all the skyline turbos. they don't handle heat as well as a steel turbo as the wheel and is why a sr20 can run 15psi on the stock turbo all day everyday and not have any issues.

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