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924guy
Joined: 29 Dec 2003
Posts: 2088
Location: Port St. Lucie, FL
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 Posted: Sat Oct 27, 2007 9:58 pm Post subject: |
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lol, i had to put a board across mine, after drilling a 2" hole through the board to let it fit over the top nipple, and kneel on it with all my weight to get it back together with stronger boost spring, then "spin" on it to get the nuts on . not the ideal way to go, but it worked...
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Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha |
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bigredtruck69
Joined: 18 Oct 2007
Posts: 17
Location: Preston England
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| Posted: Sun Oct 28, 2007 6:36 pm Post subject: |
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| 924guy wrote: | | lol, i had to put a board across mine, after drilling a 2" hole through the board to let it fit over the top nipple, and kneel on it with all my weight to get it back together with stronger boost spring, then "spin" on it to get the nuts on . not the ideal way to go, but it worked... |
cheers guys ill let you know what happends next |
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Paul
Joined: 02 Nov 2002
Posts: 9491
Location: Southeast Wisconsin
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| Posted: Mon Oct 29, 2007 12:00 am Post subject: |
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I use a BFBV. BV = bench vise.
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White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy. |
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bigredtruck69
Joined: 18 Oct 2007
Posts: 17
Location: Preston England
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| Posted: Sun Nov 11, 2007 5:23 am Post subject: |
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Hi ive tested my waste gate and it works fine so im going to put my standard turbo pipe back on and try that to see if the new pipe work or the intercooler is at fault .
Just keeping you upto date
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bigredtruck69
Joined: 18 Oct 2007
Posts: 17
Location: Preston England
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| Posted: Tue Nov 13, 2007 4:39 am Post subject: |
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| bigredtruck69 wrote: | Hi ive tested my waste gate and it works fine so im going to put my standard turbo pipe back on and try that to see if the new pipe work or the intercooler is at fault .
Just keeping you upto date
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I put the standard pipework back on today and their is now boost but only 3 or 4 psi with smooth power but no kick any ideas thanks . |
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bigredtruck69
Joined: 18 Oct 2007
Posts: 17
Location: Preston England
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| Posted: Tue Nov 13, 2007 5:09 am Post subject: |
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| bigredtruck69 wrote: | | bigredtruck69 wrote: | Hi ive tested my waste gate and it works fine so im going to put my standard turbo pipe back on and try that to see if the new pipe work or the intercooler is at fault .
Just keeping you upto date
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I put the standard pipework back on today and their is now boost but only 3 or 4 psi with smooth power but no kick any ideas thanks . |
Is my next step to but a boost controller and try to wind the boost up will i need to have the fueling adjusted to do this thanks . Also will it make my car run hotter as it runs hot now . It has a custom made rad and im sure its not big enough thanks |
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Smoothie
Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)
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| Posted: Tue Nov 13, 2007 6:20 am Post subject: |
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Interesting number there (3-4 psi). Someone here, ahem ahem, once found theirs limited to about 4 psi, and an incorrectly re-assembled (backwards) turbo bypass valve was the cause.
Was the turbo apart for a rebuild or anything before you got the car?
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"..it's made in Germany. You know the Germans always make good stuff."
'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox |
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Paul
Joined: 02 Nov 2002
Posts: 9491
Location: Southeast Wisconsin
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| Posted: Tue Nov 13, 2007 10:00 am Post subject: |
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Yeah and it was supplied by my dealer as a factory rebuilt part!!!
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy. |
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bigredtruck69
Joined: 18 Oct 2007
Posts: 17
Location: Preston England
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| Posted: Tue Nov 13, 2007 4:58 pm Post subject: |
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| Paul wrote: | | Yeah and it was supplied by my dealer as a factory rebuilt part!!! |
Yes turbo was sent away for a full rebuild |
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bigredtruck69
Joined: 18 Oct 2007
Posts: 17
Location: Preston England
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| Posted: Tue Nov 13, 2007 5:01 pm Post subject: |
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| bigredtruck69 wrote: | | Paul wrote: | | Yeah and it was supplied by my dealer as a factory rebuilt part!!! |
Yes turbo was sent away for a full rebuild |
What does that mean that i have to have a rebuild on the turbo or is it something that i can fix ????? |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Wed Nov 14, 2007 3:57 am Post subject: |
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Red, what Paul experienced was a pretty bizarre scenario, doubtful you have the same issue. Blip the throttle by hand, you should hear a prominent clacking sound coming from the unit when the throttle opens. If the valve were backwards, I don't think you would hear that.
And FWIW, when I sent mine off, I removed the bypass bits first. . .you don't want someone putting gorilla torque on those end plate bolts. . .
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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bigredtruck69
Joined: 18 Oct 2007
Posts: 17
Location: Preston England
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| Posted: Thu Nov 15, 2007 12:55 am Post subject: |
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| Rasta Monsta wrote: | Red, what Paul experienced was a pretty bizarre scenario, doubtful you have the same issue. Blip the throttle by hand, you should hear a prominent clacking sound coming from the unit when the throttle opens. If the valve were backwards, I don't think you would hear that.
And FWIW, when I sent mine off, I removed the bypass bits first. . .you don't want someone putting gorilla torque on those end plate bolts. . . |
What does the boost switch do as when mine is connected or disconnected it doesent make any differance thanks |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Thu Nov 15, 2007 2:30 am Post subject: |
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Which switch are you referring to? If you are talking about the one on the charge tube, it cuts power to the fuel pump if the car overboosts. If your car still runs with this switch disconnected, someone has "customized" your wiring. Probably not a great idea. . .if your wastegate fails, you could easily blow your engine.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Smoothie
Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)
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| Posted: Thu Nov 15, 2007 2:37 am Post subject: |
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It's an overboost cutoff switch. It cuts power to the fuel pumps if boost hits something around 25 psi (I still can't remember the exact number). It's an "NC" switch (normally closed), so if the wiring were still as it was done by the factory, the fuel pumps wouldn't run with it disconnected. It's supposed to complete the ground for the fuel pump relays' pull-in coil (electromagnet).
I recommend getting it wired correctly. Otherwise if/when the wastegate diaphragm fails, you'll be left with unlimited boost that'll be fun at first as it plasters you back in your seat, but will end badly with a bang as the engine self destructs. 
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"..it's made in Germany. You know the Germans always make good stuff."
'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox |
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bigredtruck69
Joined: 18 Oct 2007
Posts: 17
Location: Preston England
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| Posted: Thu Nov 15, 2007 4:48 am Post subject: |
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| Smoothie wrote: | It's an overboost cutoff switch. It cuts power to the fuel pumps if boost hits something around 25 psi (I still can't remember the exact number). It's an "NC" switch (normally closed), so if the wiring were still as it was done by the factory, the fuel pumps wouldn't run with it disconnected. It's supposed to complete the ground for the fuel pump relays' pull-in coil (electromagnet).
I recommend getting it wired correctly. Otherwise if/when the wastegate diaphragm fails, you'll be left with unlimited boost that'll be fun at first as it plasters you back in your seat, but will end badly with a bang as the engine self destructs. |
cheers |
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