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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 06-01-2007, 11:23 PM   #21
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Originally Posted by Braineack View Post
no problems with my internal gate and fitting DPs on two different manifolds....DP should bolt right up to it...



I make 1psi at 1800RPM and 12psi at 3800RPM, with a 2.25" catback.....
crap... proven wrong once again. nice downpipe man.
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Old 06-06-2007, 10:58 AM   #22
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Originally Posted by Arkmage View Post
that's precisely why I'm thinking about selling my T3 manifold and turbo and going to a T25... more streetable and the aftermarket downpipes are easier to get. The "internal gate" T3s limit you to a shitty stock O2 housing from some random vehicle or an expensive and hard to fit v-band unit from WOT.
Actually the T3S60 is a VERY streetable turbo, it just doesn't spool as instantly as a little T25. It does however make a crapload more power.

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Old 06-06-2007, 07:25 PM   #23
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OOOHHHH, a T25 thread, too bad the OP hasn't logged on in 3days. I hate NEWBS!

Anyways, if he ever does come back... that little turbo is the perfect size for a 200whp application. But that particular turbo isn't the one you want. It's overpriced by about $200 and as said before, the flanges aren't what you want. The wheels are .48/.49 which are the same size as in the 2g DSM, and are available in fine working condition for about $100 any day of the week on the DSM forums.

Those of you talking about 300zx's, be sure you're all on the same page. Nissan used several different turbo's in the '80's single turbo models, and small T25's in the TT's of the 90's. The 90's ones used 4bolt DP flanges which nobody has said have the same pattern (minus one bolt) as the standard 5bolt flanges.

But at the 200whp level or higher, the .48/.49 isn't as good a choice as the SR20det or T3s60. I'd say those two turbo's are very similar, with the SR20 having the edge on spool, and the T3s60 having an even larger advantage on top. I think the bottom line for those two turbo's is what kind of deal you can get on a matching manifold or DP.
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Old 06-06-2007, 07:36 PM   #24
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Originally Posted by samnavy View Post
Those of you talking about 300zx's, be sure you're all on the same page. Nissan used several different turbo's in the '80's single turbo models, and small T25's in the TT's of the 90's. The 90's ones used 4bolt DP flanges which nobody has said have the same pattern (minus one bolt) as the standard 5bolt flanges.
Yes, I can verify that the 4 bolt of the 300ZX and the 5 bolt of SR20 aren't even close. Even making an adaptor plate that would work would have to be 3/4" thick, and with the HKS Manifold, it doesn't leave enough room for a sufficient DP without trimming the shelf and moving the H2O lines.
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