Gt35r Vs Garrett T04z - Discussion (just Post In This Thread To Create A Database)

[johnnyt]

Brockas mine will be being re-tuned in the next week or two aswell so should have another 26/to4z to compare too.

using a turbosmart 48mm and avcr.. so will be interesting to see the boost curve aswell, what wastegate are you running?

[Brockas]

A cheap 50mm PWR one, or something to that effect.

Either way, I will be replacing it as soon as funds permit.

[Strik3r]

Good to see a back to back comparison there. Even though the setup could be improved, presumably the improvements would effect both dyno plots. the results are pretty much what I expected - 500-600rpm more lag, 70-100 more hp in the top end.

We are pulling the t04z off my car in the next few weeks and we're going to put on one of the new GT3788R's. Should be very interesting to see what it can do. I will try to get back to back graphs.

The graph of 1bxx056 looks pretty much identicle to mine. Would be good to see that overlayed against a really properly setup 35r on good manifolds etc.

[Butters]

one of the new GT3788R's. Should be very interesting to see what it can do. I will try to get back to back graphs.

That would be tops !!

Are the GT37 available in t3 rear housing ?

[Strik3r]

yea you can get them in a T3 undivided inlet or a T4 divided (split pulse) inlet both with 3" v-band outlet

[Butters]

GT35 FTW !

Just got mine done, Injectors now all in and tuned up.

Was tuned by Andy at hyperdrive but run up at allstar due to some wheel spin fun.

Now 561 rwhp up from 450rwhp !!

20-21 psi boost.

Still a stock jap import RB26(including stock cams n cams gears) with just bolt on gt35 turbo and injectors.

[NYTSKY]

Nicely done mate.

Pump yeh?

[Butters]

Nar E85 of course

[NYTSKY]

Good stuff, bolting my 35 on Sunday. Tuned in two weeks. Should see a similar result, if not better

[Butters]

lol, 24 psi run saw near 600 before the tuner got off it. 24 psi a bit much for a stocker i think

Your built motor should go great guns !

[NYTSKY]

WOW 600! Mine will be tuned for 23psi, we expect to see 580hp at the rears, but to crack 600 would a nice figure

[N I B]

http://www.youtube.com/watch?v=62ze0NXMWBU

This car has gone well over 600rwhp on an RB25 with GT35 and E85, Ultra reliable engine into its 4th season racing, we run it at 600rwhp as its a very basic RB25.

RB34 coming this season with a Housing change on the GT35.

[Butters]

Here's a copy of the graph.

With a built motor i'd be enjoying this all day every day

Mmm is that more then Cerbera's Built 26 with T04z ?????

Edited January 9, 2010 by Butters

[PM-R33]

Very impressive vid

My god that graph is impressive!

Edited January 9, 2010 by PM-R33

[TiTAN]

So with ~25 psi and the WMI my 35R should come near 600hp? i would have been happy with 550

Will yours be using a 0.82 rear Dave?

[NYTSKY]

Great vid, that RB was munching everything

Yeh mate .82 rear housing.

[ahh 33 s2]

where are u getting E85 from butters??

[SimonR32]

Here's a copy of the graph.

With a built motor i'd be enjoying this all day every day

Mmm is that more then Cerbera's Built 26 with T04z ?????

SMD simmo!!!

but yes that shit is impressive, why did you abort run?!? PING PING PING PING

[Lithium]

We are pulling the t04z off my car in the next few weeks and we're going to put on one of the new GT3788R's. Should be very interesting to see what it can do. I will try to get back to back graphs.

Thats a very interesting change to make - what motivated that, and what are you hoping from it vs the T04Z? Are they both T3 flanged? I've often wondered about the GT3788Rs but not been too sure on what to expect... a comparison I've always been very curious about is the GT4088R and the T04Z.

[Strik3r]

Thats a very interesting change to make - what motivated that, and what are you hoping from it vs the T04Z? Are they both T3 flanged? I've often wondered about the GT3788Rs but not been too sure on what to expect... a comparison I've always been very curious about is the GT4088R and the T04Z.

my t04z is a split pulse t4 flange - same as the GT3788. The 4088R is a bigger turbo than the T04Z (compressor and turbine) so it will flow more HP, with a tiny bit more lag.

Main reason for doing the swap is simply that the Z is too doughy out of medium tight corners around the track. IE: turns 3/4 @ QR I take at about 80km/hr. 2nd gear == massive tailslide on exit, whilst 3rd gear == LAG all the way out of the corner. Hopefully the new turbo is not only slightly more responsive, but a lot more linear in power delivery. I make 1 bar at 4100rpm with the Z and 24psi at 4500. Thats not too laggy, but as soon as you go below 4000 rpm there is absolutely nothing there. I wouldnt care too much if the 3788 only makes 1 bar at 4000rpm as long as 3800/3900 still had SOMETHING available unlike the Z which comes on like a lightswitch once you get over 4.

The only unfortuante thing is that I wont be able to directly compare how the 2 turbo's would have worked on the track as I'm making some other significant changes to the car at the same time. So wont be able to say if the 3788 is soley responsible for better lap times, but hopefully combined with everything else we are doing it makes a big difference.

Still probably a couple of weeks away from doing the swap - will see how we go.