z31 rb20

Even the early, 4g63's gets the job done...little has been done on the inside of the 4g63, all of the evolution has been in the head, and fuel system...I belive the rb20 could push the gt30r well, not many has done it so there litttle info....people have to understand that if you want bigger kw numbers then spool time will have to suffer a little. Dual BB turbo are making the lag pains painless!!!! And if the lag is a bit much than maybe we should look into gear ratios, maybe run a 4:11 rear end gears...All i know is the rb20 is built for top end, trying to make it a have low end power is against it's design, and small turbos will not do it justice.....I would love to feel 20-30 psi from a 30r on the 20..oh boy!!! I soon will start my z31 rb20det swap, and im planning on 300hp(225kw) so i might just slap on a rb25 turbo, or some sort of t3t4 hybrid...this is going to be a daily driver...my 88 starion is going to be the beast 2.6lt(g54b) sc61 t04s turbo(cold .70 a/r hot .68) MPI!!!

Finally, some reasurance:) Here is a 30r on ebay, for a pretty good deal, you will have to modify your downpipe though... http://cgi.ebay.com/ebaymotors/NEW-GARRETT...sspagenameZWDVW http://cgi.ebay.com/ebaymotors/Garrett-GT3...sspagenameZWDVW http://cgi.ebay.com/ebaymotors/GARRETT-GT-...sspagenameZWD1V

Only 220kw? wow thats pretty weak..In my starion i have been running 15psi for three years no problems, other than a blown head gasket the first year.... I learn more everyday....

Im new, and i have been reading these forums for about two weeks now, and from what i gather...just a stock rebuild would prolly suit you just fine...maybe go with some fg pistons so you can run more boost safely....Now i would think if you wanted 350-400kw everyday then i would think you would need a beefer engine...however the all RB's are said to be able to hold 300kw...hope i helped...

Just wondering why everyone says the gt30r or gt35r turbo would be too laggy...Here in the states there are 2.0 4g63T with gt35r's making 600+hp sure full(30psi) boost dosen't until 5000-5500 but your power band won't stop until 8000rpm?? Are you guys saying that a 4g63T 2.0lt 4 banger can spool turbos quicker than the 2.0 rb20det??? I would think that gt30r with a .63 a/r would be the most perfect turbo for a mild to high power rb20...mild being 300hp(15-18psi...high being 500hp...yes you heard me 500hp!!!25-30psi