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stevekat · Joined: 19 Jan 2008 Posts: 719 Location: Los Angeles, CA

Last time I drove my 1981 931, coming off the highway I heard some exhaust and rattling. I knew I probably had a cracked bracket that attaches the waste gate to the torque tube mount, but now looks like the J-Pipe split due to the stress as well, a common failure cascade. Not a problem. I have a spare J-Pipe and bracket. I'll pull the old ones off and re-weld them as spares. While under there doing all this, I have to pull the waste gate. Although it seems to be operating OK, I think I am going to put in a spare I have around. I'll rebuild the old one as a standby spare. Looks like the studs could go for a refresh, etc.

The spare one I now have around part #: 930 123 214 1R. I have seen this number floating around. On the top of the aluminum hat is stamped '14.555.; I have not heard of folks discussing a number on top - anyone know what this references?

I have adjustable boost (pressure into the top of the hat to offset opening pressure.

In taking my current spare apart, I found a poor condition diaphragm, just barely split where it folds. I have a white spare diaphragm that I am using as a replacement. (I seem to have a lot of spares - comes from the mindset one develops from hanging around here a lot !

I also have new spare springs that I obtained with the diaphragm.

The spring inside my spare waste gate is 5.5 inches tall. The extra springs I have are 6.875 inches tall and 7.25 inches tall.

When I obtained the spare diaphragm and springs, the seller indicated one spring was 1 bar, the other 'factory' for a 1989 911 Turbo. I'd like to know if the taller spring is likely the 1 bar, the 6.875 inch spring is the 'factory' for the 1989 911 Turbo and what boost it may be.

And also, if the 5.5 inch spring is likely a stock 931 spring (U.S.) I probably want to use the factory 931 spring, since I have adjustable boost and this would be my floor. My spare waste gate is likely from a 931, just wanted to vet the 5.5 inch spring to be sure.

Any help sorting this out is appreciated.
_________________
"Never get out of the boat. Absolutely goddamn right. Unless you are goin' all the way."

Gone to new home: '81 924T, US version, CGT Intercooler, UTCIS-PT, Euro DITC, Greddy Trust MBC, Forged Fuchs Flat Dish 6's, Factory Recaro's.

Grenadiers · Posted: Wed Nov 25, 2009 12:12 pm Post subject:

Hey Steve, I have a stock 931 spring in my cache, I'll try to remember to measure it wednesday for ya. dave
_________________
'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

stevekat · Joined: 19 Jan 2008 Posts: 719 Location: Los Angeles, CA

Thanks Dave!
_________________
"Never get out of the boat. Absolutely goddamn right. Unless you are goin' all the way."

Gone to new home: '81 924T, US version, CGT Intercooler, UTCIS-PT, Euro DITC, Greddy Trust MBC, Forged Fuchs Flat Dish 6's, Factory Recaro's.

Grenadiers · Posted: Thu Nov 26, 2009 12:45 am Post subject:

5-3/8"
_________________
'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

stevekat · Joined: 19 Jan 2008 Posts: 719 Location: Los Angeles, CA

Thanks Dave. So it appears highly likely my spare waste gate was from a 931. Going with my 5.5 inch spring.
_________________
"Never get out of the boat. Absolutely goddamn right. Unless you are goin' all the way."

Gone to new home: '81 924T, US version, CGT Intercooler, UTCIS-PT, Euro DITC, Greddy Trust MBC, Forged Fuchs Flat Dish 6's, Factory Recaro's.