GT30R on RB25DET

[BLUEGTR]

I have a mate who is selling a garret GT30r interally wastegated turbo. it has a .63 exhaust housing .7 front and a 560hp rating. I was wondering what power this would make and how laggy it would be on a rb25 that has fmic, powerfc, fuel pump and 550cc injetors as i am thinking about buying it.

thanks

[infected flow]

need more info is it modded internal...?

if not 560hp turbo on a rb25det will be very laggy! "est boost at 5-6rpm maybe".

[maximumrpm]

it should kick in about 4500rpm and ive seen people get over 260rwkw with the mods you have

[netrati]

Yeah 5-6k rpms would be like a T78/88!

[The Mafia]

I have a mate who is selling a garret GT30r interally wastegated turbo. it has a .63 exhaust housing .7 front and a 560hp rating. I was wondering what power this would  make and how laggy it would be on a rb25 that has fmic, powerfc, fuel pump and 550cc injetors as i am thinking about buying it.

thanks

I'm about to do the exact same thing

I have 96 model with fmic, full exhaust, intake, PowerFC, Fuel pump

Just got a VG30 exhaust housing (.63) to put on a brand new GT30 Compressor and core.

Should be at full boost at about 3500rpm.

All I need is injectors.

What kind of injectors do you have? Are they high or low impedance?

[race_snooze]

so why would it be laggy its twin ball bearing and its only a 30. Will be fine. do a search on the forums you will find a good run down on that turbo

[Cubes]

Get the GT30 600hp core. Not the 500hp core.

[/size]

700177-0014

[RACESPEC]

dont forget guys

it only has a 0.63 exhaust housing, so it wont be very laggy at all

Thanks

Tarek

RACESPEC

[email protected]

[R31Nismoid]

need more info is it modded internal...?  

if not 560hp turbo on a rb25det will be very laggy!  "est boost at 5-6rpm maybe".

a GT30 with a .63 rear housing will be on by 4000rpm

My advice would be aim for a .82 rear as a .63 will make it very "snappy" comnig onto boost which isnt good for traction

Matt, why do you have an RB25 :confused:

[Shaun]

I had a GT30 o.82 rear on an RB20 and it had full boost by 4200rpm. Boost by 5 or 6 is bullshit. Id give the 0.63 a miss and go the 0.82; it'd be well suited to an RB25.

[RACESPEC]

even on the SR20 we are bypassing the 0.63 and going straight for the 0.82

there are few 0.82 turbos available, 2 i think

cheers

Tarek

RACESPEC

[email protected]

[mass_iv]

hey guys im also about to slap one onto my r33, i was told that it wouldnt be too laggy, about 4000rpm full boost.

[DRIFTER]

I had a GT30 o.82 rear on an RB20 and it had full boost by 4200rpm. Boost by 5 or 6 is bullshit. Id give the 0.63 a miss and go the 0.82; it'd be well suited to an RB25

saun- what mods do you have? my gt30 has a .63 rear and my rb20 doesn't have full boost that early

[bigcarl]

if its any help ive got one on my rb25 , starts making boost from2300/2500rpm and full boost by 3500rpm. so probably add another 500rpm for rb20 maybe.

[R31Nismoid]

hey guys im also about to slap one onto my r33, i was told that it wouldnt be too laggy, about 4000rpm full boost.

if you think 4000 is too laggy... wow...

Mine with a .82 rear is all on by 4200. Stock head that is.

Still have nearly 4000rpm worth to use.

[Trust33]

if its any help ive got one on my rb25 , starts making boost from2300/2500rpm and full boost by 3500rpm. so probably add another 500rpm for rb20 maybe.

Edit:

I have just read your gt30 thread.

.70 comp and .63 exhaust housing

That is why your making the power so early.For a moment there i thougt it was the .82 and i was wondering why you were making the power on average 500+rpm earlier than others with rb25.

[Cubes]

The RB25/20 exhaust a/r is apparently not a .63. It really is a .48.

The VG30 exhaust a/r is a .63 or there abouts.

[Shaun]

saun- what mods do you have? my gt30 has a .63 rear and my rb20 doesn't have full boost that early

I had a Tial 35mm external wastegate plumbed into the modified standard manifold. Worked well too, but 0.63 would have been better on the RB20.

[dnb]

it should kick in about 4500rpm and ive seen people get over 260rwkw with the mods you have

my friend has a standard internal rb25 making 343rwkw with a gt35r/106.

its a huge rear housing for a 2.5l engine but it makes 25psi by 4500rpm. i suspect the gt30 with .63 will be at 25 psi by about 3500rpm

[Col-GTSX]

my friend has a standard internal rb25 making 343rwkw with a gt35r/106.

its a huge rear housing for a 2.5l engine but it makes 25psi by 4500rpm. i suspect the gt30 with .63 will be at 25 psi by about 3500rpm

Thats got to be harsh on the stock internals....