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Registered
Join Date: Jan 2007
Posts: 1,079
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New B+B headers and overboost
My shop installed B+B headers and also a zork pipe last week. Since then, my wastegate dump pipe has remained silent. It used to bleed all boost at 1 bar exactly, and now it seems that my wastegate literally is not dumping pressure at all. I saw a boost spike a couple times and after that I kept my foot off the throttle after 1 bar was achieved. I have driven the car several miles and saw no signs that the wastegate worked even once to dump pressure.
I am wondering what could have gone wrong with the install. I thought they just bolted the crossmember pipe up to the wastegate without touching anything. When they tuned the CIS, they removed the intercooler and replaced it. This seems like the wastegate is simply dead. Not just standard overboost because of new headers and then pressure bleeds, but overboost and no response at all, no release at the dump pipe. I will probably go to a Tial wastegate. Just want to know if anyone has an opinion on what went wrong before I talk to the shop. Thanks! Last edited by DDDD; 07-21-2007 at 05:40 PM.. |
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07-21-2007, 05:32 PM
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Is the tube from the IC to the wastegate connected? They could have not re-installed it (I've made that mistake..oops). There should be two lines coming from your wastegate, one is a vent and goes to atmosphere, the other goes to the IC.
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1987 930 1956 Chevy 3100 2009 Subaru Forester 2003 KX250 X2(I like my toys!!) |
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07-21-2007, 05:52 PM
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Crotchety Old Bastard
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My thoughts exactly, they forgot to reconnect the boost signal to the wastegate. Glad you caught it before hurting your engine!
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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07-21-2007, 06:13 PM
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resident samsquamch
Join Date: Oct 2005
Location: Cooterville, Cackalacky
Posts: 6,815
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I answered in your rennlist post...
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-jeff back in the saddle: '95 993 - just another black C2 *SOLD*: '87 930 GP White - heroin would have been a cheaper addiction... "Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP  )
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07-21-2007, 06:26 PM
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Registered
Join Date: Jan 2007
Posts: 1,079
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Quote:
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07-21-2007, 07:03 PM
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Porsche
78 Porsche 911SC 3.0L, 3.3Turbo soon. 
