Which should I go with GTX2863, 2530, or 2860-5

[Robzilla32]

Doesn't this fit the bill:

https://www.sau.com.au/forums/applications/tapatalk/index.php?/topic/470372-Steve's-R33-LM-Limited-Upkeep

[Mick_o]

25 minutes ago, frakzz said:

EFR is expensive, how about Precision 6262?

Could of had EFR for the price of all these turbos you keep building and keep on getting the same shit results with! 

[r32-25t]

7 hours ago, frakzz said:

EFR is expensive, how about Precision 6262?

How about a Garrett gtx3582 

[Dose Pipe Sutututu]

Step it up a game, GTX3584RS would be good fun. 

Or get a GTW3884, good on the wallet. Plenty of 2JZ boys are using them and making some decent HP with good response (no idea about transient throttle).

@timmy_89 might be able to comment

 

 

[frakzz]

On 15.01.2018 at 10:34 PM, r32-25t said:

How about a Garrett gtx3582 

 I think to put 3582 0.82 T3 Twin Scroll

and still look at the turbines mambatek. but the difference in price is not big, I think it's worth it?

Edited January 17, 2018 by frakzz

[Dose Pipe Sutututu]

Mamba turbos are good, I wouldn't be surprised if their parent company is actually making parts for Garrett as well.

[Super Drager]

Someone i know of just ran 9.6 @ 143mph with GT2860s highflowed to gtx2871r. Z32 but still gt28 housings...

[Lithium]

55 minutes ago, Super Drager said:

Someone i know of just ran 9.6 @ 143mph with GT2860s highflowed to gtx2871r. Z32 but still gt28 housings...

Nice, good!   I don't really know what packaging constraints Z32s do or don't have but I suspect this has little relevance to low mount twin configurations on GTRs due to the reasons which have been gone over many times.  The single turbos (at least the cores) of the GT28 range are well known to be capable of decent flow in their own right, but needing the smallest possible compressor and exhaust housings, limited space for dump pipes and compressor inlets the turbo starts getting all of the worst case scenario options for performing mean that they really aren't going to perform as well as they are capable of when used as stock location turbos on RBs.

[frakzz]

On 10/19/2017 at 2:01 PM, frakzz said:

solenoid rsp 100%, ofs 100% (Full boost)

3000, os 12.6, boost 0.3, ign 35
3500, os 12.12, boost 0.5, ign 32
4000, os 12.24 boost 0.7, ign 27
4500, os 11.44 boost 0.84, ign 25
5000, os 11.44, boost 1.01, ign 23
5500, os 11.55, boost 1.17, ign 21
6000, os 11.27, boost 1.26, ign 20
6500, os 10.75, boost 1.29, ign 18
7000, os 10.35, boost 1.25, ign 19
7300, os 9.8, boost 1.33, ign 18

rb26 can not rotate these turbines anymore. What can I do to fix this?

On 11/22/2017 at 12:20 AM, frakzz said:

1.3 bar = 491rwhp

 

I figured out what was the problem, the resonator created a back pressure in the exhaust system of 0.6 bar

 

I installed single mamba GT3582R (11 blades, t3 0.82 ts) on same confing

1.1 bar = 478whp

I'm going to cut out the resonator, then I'll make a graph for 2 bars

dyno

Edited August 20, 2018 by frakzz

[frakzz]

boost up to 1.8 bar

[GTSBoy]

That's the resonator, or a flexible joint?  Either way.....f**k!

[Ben C34]

Wow that is so shit!

[frakzz]

4 hours ago, GTSBoy said:

That's the resonator, or a flexible joint?  Either way.....f**k!

it's a resonator, but I cut it out

but for some reason I can not boost more that 26 psi at 98bp

Edited August 21, 2018 by frakzz

[GTSBoy]

3 minutes ago, frakzz said:

but for some reason I can not boost more that 26 psi at 98bp

 

What?  98bp, as in BP Ultimate 98 octane?  Who's surprised?  Seems reasonable to me.  Want more, need more octane, no?

[frakzz]

BP Ultimate 98 octane

is this the maximum boost on this fuel?

[GTSBoy]

Tell us.  Why did it not go above 26 psi?  Pinging?  Turbo won't flow any more?

But to go back to your sort of question.....yes, 26 psi is quite a lot of boost on plain dinosaur jizz.

[niZmO_Man]

Acktually oil predates dinosaurs by a few 100 million years

[frakzz]

can the exhaust system not be wide enough? It's 3 inches.

[rb30gtr]

On 1/18/2018 at 8:31 AM, Dose Pipe Sutututu said:

Mamba turbos are good, I wouldn't be surprised if their parent company is actually making parts for Garrett as well.

Tell me more..?

Frakzz - If you want big twins in stock location, literally what ol Dosey says there might be a good starting point, Td05-18 or 20g's with billet wheels CHRA (yes thrust bearings) in a kit (including braided lines, gaskets and studs) for the same price as second hand -5's?

[rb30gtr]

On 8/22/2018 at 9:49 AM, niZmO_Man said:

Acktually oil predates dinosaurs by a few 100 million years

hahaha. Nice.

But does it predate Godzilla? Didn't he kill off the dinosaurs? or was it a man in the sky