Update on my Independent Twin Turbos

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Oct 5, 2004 | 08:26 PM

#26

jimlab

Super Snuggles

Joined: Feb 2001

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From: Redmond, WA

Quote:

Originally Posted by broken93

Jim, I think he means the wastegate acutators. That's something that's going to be a bit of a challenge.

Ah. Didn't know you were using turbos with internal gates. Guess I should have looked at the pictures more closely. My bad.

Last edited by jimlab; Oct 5, 2004 at 08:29 PM.

Oct 5, 2004 | 08:53 PM

#27

gdnimr0d

screwed by chad hall

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From: South florida

damn man i can't express how sick that looks in words...i just hope it will run as well as we all hope it to run...keep on keeping on broken93....peace out

Oct 6, 2004 | 03:45 PM

#28

MR_Rick

Planning my come back

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From: Austin, Tx

Quote:

Originally Posted by broken93

The most difficult part of this whole operation is going to be making the wastegate actuator(s) fit.

Are you planning to use one actuator for both turbos? If so why? Just "T" the vacuum lines together and it should work fine. Or is space an issue?

Oct 6, 2004 | 05:26 PM

#29

Zyon13B

"I see triangles"

Joined: Apr 2003

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From: PA

Wow, Can't wait for the results.

Oct 6, 2004 | 05:57 PM

#30

Sonny

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From: N Cali

ATP Turbo makes v-band discharge flanges for those turbos. It makes the DP setup nice and easy, but they take up more room. I have GT28R sitting here and it's getting a V-band.

Sonny

Oct 6, 2004 | 08:51 PM

#31

broken93

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From: AL

The ATP V-band is 3". There's absolutely no way they'd both fit in there, much less two 3" downpipes. I bugged ATP for a while to see if they'd start making smaller outlet flanges - they don't. In fact, the smallest weld-on GT25 series flange they make is for 3" oval. TEC has the flanges with 2.25" machined outlets - I'd really recommend those, and terminate them downstream in a V-band. I may end up doing that after the merge collector instead of using a 3-bolt flange.

Oct 6, 2004 | 11:12 PM

#32

Sonny

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From: N Cali

I actually have a TEC flange already. It's a really nice piece, but if you look at the way it blocks the wastegate door, I think the setup is less than ideal. I have the factory Nissan discharge flange for this turbo. It's designed similar to this one from SSAutoChrome:

I have not personally run the TEC flange, but some Nissan guys report problems with boost creep and spiking with it, so I'm not going to use it. I can't use the Nissan one because it hits the block.

I'm going to either use the 3" V-band from ATP or make a setup similar to it.

Sonny

Oct 6, 2004 | 11:19 PM

#33

broken93

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From: AL

That OBX piece is nice, but a little outside of my fab skills.

I've run high-boost T25's in the past without problems with the wastegate door. It opens a good 45 degrees or so - I don't expect it to be a problem. I guess we'll see!

Out of curiosity, where did you find the Nissan flange/gasket/template/whatever?