New Garrett Gt3540 Internal Gate Is Here + Dyno Results

[Bliksem]

Nice!

I take it you're running larger injectors and AFM as well?

[dangerman4]

Nice!

I take it you're running larger injectors and AFM as well?

yep

nismo 550cc

Q45 AFM

PFC

[Moanie]

woah danger! thats an awesome figure!! and coming from an auto as well!!! good work!!1

did you think the q45 was necessary?

[dangerman4]

woah danger! thats an awesome figure!! and coming from an auto as well!!! good work!!1

did you think the q45 was necessary?

we had to tweak the Q45 as it kept maxing out.

So yes i would say it was money well spent.

there around the same price as a Z32 anyway.

[Moanie]

the q45 was maxxing out?! i would have thought the z32 might.. but not the q45... ?

[lukits01]

nice,

anyone have any idea how this turbo would do on a RB30 with mild Cams and a 7k Redline?

How would it do with the different AR sizes .63 .82 1.06?

responsive? laggy?

[dangerman4]

nice,

anyone have any idea how this turbo would do on a RB30 with mild Cams and a 7k Redline?

How would it do with the different AR sizes .63 .82 1.06?

responsive? laggy?

rb25 standard cams

.82 AR

26psi by 4200rpm

would be about 3500 on a rb30 and may be better with cams.

[gtst25]

Hi fellas,

Grepin actually had the .68 housing originally and made over 300@the tyres, then just recently he changed to the larger housing - not much difference in the power output just moved it higher in the rev range. I think he said he's seen 320kw@ the tyres at one stage (maybe he had the wastegate wired shut!!!?)

I'm going to stay with my .68 housing - I've just purchased 256 tomei pon cams and fitted water meth so am looking foreward to a new tune.

Cheers

Grepin went to fairly extreme measures to get that 300rwkw, like practically having to jam closed the wastegate from what i remember!

my 280rwkw was made with a small front mount and 3inch exhaust, i have just fitted a HKS type-R FMIC off of my GTR to replace the little hybrid, plus a 3 1/2 inch exhaust. Once its off defect (very soon!) i will put the good bits back on and re-tune and see what happens.

if grepin has the 0.87 and totally maxed it at 300rwkw, then isnt it likely that mine is the same housing, seeing as i got close to 300 without really screwing it for max power?

How much difference in peak power is the housing gonna make? Mine also doesnt hit hard till 4000rpm, which housing would that fact indicate?? im thinking if i do have the 0.68 and it doesnt hit hard till 4grand, then on an RB20 it would be laggy as hell! Seeing how you guys are saying the .68 is good on an rb20, it would lead me to think its a 0.87... yet something in my mind remembers 0.68 fron when i ordered it... why cant it just have the damn number on the housing!!

[Kaido]

First of all, nice numbers!

Few questions though:

1. How does it spool so quickly? I thought it was commonly accepted that you wouldn't have 20+ psi until 4700ish on a RB25 w/ stock head. Is it all because of the manifold? Or the tune?

2. Shouldn't the .82 AR GT3540 make around 500whp at 26 psi? Not saying that 425 is low by any means but still.

3. At what rpm does boost really start building?

Not calling BS or anything, just tryin to figure things out for my turbo setup. Thanks!

[Cubes]

Awesome results Darren, as you said stock head, plenum, cams and an auto.

Definitely an excellent power figure for the boost run not to forget its an auto that are well known for sucking out a bit of power. No doubt if it was behind a manual you could throw another 30rwkw on to the figure.

Also looks like that stock wastegate size is working well, its definitely able to pass the air required as it is dropping boost at the top end. Great to see you've made use of those internals with a peak of 26-27psi.

Still dumb founded.. 317rwkw on the stock auto, tough little auto box's those.

So... Is it scary..

[Cubes]

1. How does it spool so quickly? I thought it was commonly accepted that you wouldn't have 20+ psi until 4700ish on a RB25 w/ stock head. Is it all because of the manifold? Or the tune?

Auto's have a considerable influence on spool

[dangerman4]

Go the Auto!!!!!!

its very predictable.. you can cruise around off boost and its so nice to drive, yet point it in a straight line and boot it and it changes up into top gear rather quickly.

All good..

big smile..

i have dropped it back to 20psi as i said i would, but its nice to know that its there if i need it.

[dangerman4]

Hey nismoid how does that compare to your car with standard cams?

[lukits01]

What did you do for oil and waterlines dangerman?

Had to fabricate new ones?

[SLY33]

Hi fellas,

Grepin actually had the .68 housing originally and made over 300@the tyres, then just recently he changed to the larger housing - not much difference in the power output just moved it higher in the rev range. I think he said he's seen 320kw@ the tyres at one stage (maybe he had the wastegate wired shut!!!?)

I'm going to stay with my .68 housing - I've just purchased 256 tomei pon cams and fitted water meth so am looking foreward to a new tune.

Cheers

I must have the 0.68 housing then. that sounds about right now... I too will stick with it as its just right for the street and should cut some nice 11's with the right traction!

Dangerman thats a great result! so how much bigger is this turbo than a HKS 3037proS? given the fact that on a manual car the HKS will see 320+rwkw, and yours if it was manual a touch more?!

[dangerman4]

im really drunk so ignore anything i say but, i was origonally looking at a 3037, but for $3000 it was hard to go past the garret for $2050.

[Cubes]

Are you going to run it up at the dyno day? :S

[dangerman4]

Are you going to run it up at the dyno day? :S

do you want me too?

"repeat" im really drunk....

[Cubes]

It would be nice to see it on the rollers but personally I probably wouldn't juuuuuuust incase it made less power. lol

That would eat at me.

Either way buddy.. Just asking if you had plans to or not.

[SR910]

oh yea, its got to be at least 40 kw down compared to hitechs...

Edited September 23, 2006 by SR910