What Turbo To Get For My Rb20det

[Italiazr1]

Just wanna know what you's think about a gt35 turbocharger or gt40

my mate recommended it for the rb20

anyone know anything about em or fitted one to the rb20 before?

[paulr33]

Just wanna know what you's think about a gt35 turbocharger or gt40

my mate recommended it for the rb20

anyone know anything about em or fitted one to the rb20 before?

5pi by 6800rpm

[rb20inside]

yer, nah dude. way too big for 2 litre.

consider that for a rb25/30

[The Dan]

I have been fitting the GT2876R turbos to the RB20's on the stock manifold. They are a good turbo with great response and output....mind you, it is a hell fight to fit it all unless you have done it all before.

[Rolls]

Just wanna know what you's think about a gt35 turbocharger or gt40

my mate recommended it for the rb20

anyone know anything about em or fitted one to the rb20 before?

You would barely get any boost at all in first gear.

[Italiazr1]

ok thanks dont worry bout that last post i looked it up

But...

im going to start a new post And i want everyone with the rb20 too

post up what turbo they are running when it hits full boost and any info about how much mods they

have cause im not getting very far this way i need results

Type of Turbo = Psi with ect ect ect = Power in rwkw

Cheers

(i also think we should do it with the rb25 for the r33 lovers)

[Roy]

No need for a new thread....plenty of ppl have posted in the followign two threads...

http://www.skylinesaustralia.com/forums/in...c=58229&hl=

http://www.skylinesaustralia.com/forums/in...howtopic=103095

[Italiazr1]

ok im after some comfirmation on this turbo charger before i buy it

it would be nice to hear of someone else that has it on there RB20

i wanna know the specs on or what yous think about the gt2876r 0.64

when it will hit boost and type of power output

elite has already mentioned what it should put out ect but i wanna make sure these figures

are spot on before i buy so dont go copy what he has said in his posts

thanks

[Italiazr1]

Anyone had experiecnce at all with this turbo?

[z31 rb20]

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

[salad]

4g63 has less cyls and consequently has bigger bore and stroke to make up the same displacement, 85x88 (borexstroke) where as the rb20 is 78x70

from this 25% longer stroke, i think it would be safe to assume the exhaust would be pushed out around 25% faster (given same head, all the other crap)

they also run an 8.8:1 compression ratio compared to the rb20s 8.5:1, not much difference, but would help a bit.

generally a 2L 4 will spool a turbo better than a 2L 6.

Edited September 20, 2006 by salad

[Haysey]

I know its late in the thread, but if i was you, i would go with a Sliding Performance RB25 Highflow...

Reason, good response, good bang for buck(under a grand exhange price), reliable and with a retune, injectors and the supporting mods you will see around 220rwkwish Guranteed!

I know this because im going to get that exact turbo very soon!

[Italiazr1]

money is not an issue for me and high flows dont last too long especially the way i drive

does anyone know anthing at all about this gt 2876r .64

still havent got my turbs yet.......................

[The Dan]

money is not an issue for me and high flows dont last too long especially the way i drive

does anyone know anthing at all about this gt 2876r .64

still havent got my turbs yet.......................

If you are after something a little more 'bolt-on' friendly, the GT30R will not be too laggy. Good for around 500hp on an RB20 but even with the 0.64 rear housing....don't expect 20psi til around 4000-4500. I would recommend cams and head porting to assist but at least cams if you are on a budget. Price is $1750 for one of these.

[z31 rb20]

If you are after something a little more 'bolt-on' friendly, the GT30R will not be too laggy. Good for around 500hp on an RB20 but even with the 0.64 rear housing....don't expect 20psi til around 4000-4500. I would recommend cams and head porting to assist but at least cams if you are on a budget. Price is $1750 for one of these.

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

Edited September 20, 2006 by z31 rb20

[discopotato03]

Honestly my opinon only - the GT2876R are dogs . I would sooner throw money away on those ridiculous "turbo zets" and use them for paper weights . Trying to force a 53.8mm turbine to drive a 76mm big trim compressor is just plain dumb . Look them up on the turbobygarrett website - they clearly state not for a performance application , I can't see any use for them in anything . Buy at your own risk - its your money/choise .

Fours and sixes , can't really compare . As has been said the 2L six has ~ 330cc pots vs the 2L fours ~ 497cc pots . You are burning a greater mass of air and fuel in the four and venting a greater quantity of exhaust gas per cylinder - this makes a huge difference to low speed engine torque and the ability to excite large turbos .

The RB20 has had many birthdays since it last saw any factory level development where the 4G63 has been a constant evolution that is still ongoing . They have come a long way with mechanicals and controls since the early VR4's .

If there had been a 4 cylinder version of the RB26/30 it would have solved many arguments .

Cheers A .

[z31 rb20]

Honestly my opinon only - the GT2876R are dogs . I would sooner throw money away on those ridiculous "turbo zets" and use them for paper weights . Trying to force a 53.8mm turbine to drive a 76mm big trim compressor is just plain dumb . Look them up on the turbobygarrett website - they clearly state not for a performance application , I can't see any use for them in anything . Buy at your own risk - its your money/choise .

Fours and sixes , can't really compare . As has been said the 2L six has ~ 330cc pots vs the 2L fours ~ 497cc pots . You are burning a greater mass of air and fuel in the four and venting a greater quantity of exhaust gas per cylinder - this makes a huge difference to low speed engine torque and the ability to excite large turbos .

The RB20 has had many birthdays since it last saw any factory level development where the 4G63 has been a constant evolution that is still ongoing . They have come a long way with mechanicals and controls since the early VR4's .

If there had been a 4 cylinder version of the RB26/30 it would have solved many arguments .

Cheers A .

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!!!

[Roy]

If you are after something a little more 'bolt-on' friendly, the GT30R will not be too laggy. Good for around 500hp on an RB20 but even with the 0.64 rear housing....don't expect 20psi til around 4000-4500. I would recommend cams and head porting to assist but at least cams if you are on a budget. Price is $1750 for one of these.

Are we sure that putting cams in an RB20 makes it more responsive? If so what sized cam was it?

Also, head work, what is meant by that? Are you talkign about the chambers, the ports, match porting, bigger CA valves???? Again, just like with NA cars if you can worsen air velocity and low rpm response with cams and headwork....how do you avoid makign the response worse?

[RS500]

Are we sure that putting cams in an RB20 makes it more responsive? If so what sized cam was it?

Also, head work, what is meant by that? Are you talkign about the chambers, the ports, match porting, bigger CA valves???? Again, just like with NA cars if you can worsen air velocity and low rpm response with cams and headwork....how do you avoid makign the response worse?

Roy,

if using the hydraulic lifters (lash type), i don't think you can go higher than 8.5mm lift, and duration up to 270 degrees in the PROCAM and 256 in the PONCAM, according to Tomei.

if running solids, you can go as high as 10.25mm , with but other mods will be required.

hhmmm, i have a mildly ported rb20 head with modified cams sitting at home, now i am tempted and then i can fit up the TD06-25G that's also sitting in my garage

Edited September 21, 2006 by RS500

[Italiazr1]

Ok So you think the gt2876r 0.64 is no good any experince with it at all?

The other turbo i was having a look at is the HKS GTRS but im not too sure on the type of power output id get

but on the other hand how does it compare to lets say 2530 or 2540

is the gtrs good quality or should i just go for something like the 2530

i want something i can run big boost on are they all similar