2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

boost problem, fixed..!

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Old Apr 13, 2003 | 09:58 PM
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From: Hood River oregon
Cool boost problem, fixed..!

I was having problems with my boost. It would shoot up to 8 PSI then fall off about 5-6000.

So I wired my twin scroll actuator open.

WOW!! just hit 10psi all the way to the redline. Good lord!

Jarrett
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Old Apr 13, 2003 | 10:15 PM
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say goodbye to your spool up time. I removed the twin scroll on an extra turbo I had and evn with a MBC I don't get full spool till like 4k
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Old Apr 13, 2003 | 10:23 PM
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Spool up time is still amazing! Im spooled by 2500.
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Old Apr 13, 2003 | 10:33 PM
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how did you wire it open?
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Old Apr 13, 2003 | 11:12 PM
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Spool up time is still amazing! Im spooled by 2500.
bitch! Maybe this turbo is just old and tired, I'm swapping back on the other turbo since I just got done porting the wastegate on it.
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Old Apr 13, 2003 | 11:17 PM
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Good to hear that you at least know where the problen resides. BTW, I am not bringing the Rex with me to Tucson (I will be there this week) so I won't be stealing that tranny from you.

Catch you later!

PJ
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Old Apr 13, 2003 | 11:25 PM
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with my ported motor I get full bost by 2k but it starts fallinfg off by 5500 rpms....
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Old Apr 14, 2003 | 12:10 AM
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Originally posted by BlackRx7
with my ported motor I get full bost by 2k but it starts fallinfg off by 5500 rpms....
that was my problem till Iwired the scroll actuator open.
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Old Apr 14, 2003 | 12:11 AM
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Originally posted by Blowtus
how did you wire it open?
Safety wire... Resists heat.

Jarrett
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Old Apr 14, 2003 | 12:54 AM
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um, could u explain pls j-rat?
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Old Apr 14, 2003 | 01:03 AM
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Just out of interest (mainly to confirm the system was working properly) I did basically the same thing, but just pulled the green actuator doover the vac hose connects to. Boost came in later, and no difference in the top end, on a stock t2 with mild exhaust. Probably old news to plenty of people, but hey
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Old Apr 14, 2003 | 01:08 AM
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Rex: go find a coat hanger. Disconnect the actuator from the twin scroll arm, take hanger and hook the arm up to something so it stays open. Done (ghetto, but done )
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Old Apr 14, 2003 | 01:12 AM
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It's about time you got around to fixit it, you've only been complaining about it for the past week!
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Old Apr 14, 2003 | 04:43 AM
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From: Hood River oregon
Originally posted by RexRyder
um, could u explain pls j-rat?
I disconnected the actuator arm from the manifold arm. Then I ran some aircraft safety wire from the actuator forward. That keeps the actuator open. I can provide pics tomorrow, its too late now.

Jarrett
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Old Apr 14, 2003 | 05:15 AM
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Originally posted by SonicRaT
It's about time you got around to fixit it, you've only been complaining about it for the past week!
Whatever.....
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