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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 11-24-2006, 10:02 PM   #21
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it stinks cause the more i see gt2554 and dyno graphs like yours it makes me want to make a torquey 200hp beast.
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Old 11-25-2006, 10:04 AM   #22
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I wonder what kind of heat (in and out) the twins would generate at something like a track event where they're operating way up in the rpm all the time.
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Old 11-26-2006, 07:44 PM   #23
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Good question. The GT15's are not watercooled. I also haven't figured out how to make a fancy airbox for them either.
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Old 11-27-2006, 03:17 AM   #24
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You know, if you could put a WG-like flapper blocking off one of the turbos that opened above like 7 psi or a certain rpm, that would make your car spool up by like 1500 rpm instead of taking as long as a bigger single. Your car seems to suffer the exact same problem as a supra TT with both turbos always on.

Ooh except you completely split the turbos from one another. If you block one off, the other turbo wont get more exhaust gas. Alright, nevermind.
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Old 11-27-2006, 09:08 AM   #25
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No, you are right. Both mini-manifolds are connected now with a "balance" tube. Originally I didn't have one but strange things would happen randomly. Most pictures I see online are old pics, including my sig pic.

I thought of doing something like you mention, I'm sure there's some external wastegate that's big enough to act as a diverter valve on this setup. But these turbos are small enough that they spool quick as-is. This diverter would be cool with 2 bigger turbos!
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Old 11-27-2006, 10:07 AM   #26
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hey what BOV is that btw, I forgot to ask that day. I love the snap, crackle, and pop of it.
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Old 11-27-2006, 11:35 AM   #27
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Quote:
Originally Posted by braineack View Post
hey what BOV is that btw, I forgot to ask that day. I love the snap, crackle, and pop of it.
Hes running a Kellog BOV, or was it the General Mills BOV. I forget:gay:
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Old 11-27-2006, 11:54 AM   #28
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old style FM BOV with internal modifications to allow less spring pressure.
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Old 11-27-2006, 11:59 AM   #29
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close Andy.
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Old 11-27-2006, 02:42 PM   #30
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Actually I was thinking this morning about the best way to accomplish it. I think you could have a log style manifold with 2 turbos coming off it, plus an external wastegate. Neither turbo would need the internal WG.

Also, have a flapper door (like a throttle body) in one of the turbine inlets with an external lever that is hooked up to a WG actuator can from an internal setup. I was thinking the door and the little rod/arm that turns it would have to be hand made. Since youre already skilled at fabrication, I figure it would be trivial. Then the only trick would be to test at what rpm and boost to open that flapper for the secondary. Probably at whatever the WG RPM was for both turbos originally. use a second EBC solenoid and open it with a nitrous RPM switch.
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