924Board.org

Dans931 · Joined: 20 Jan 2006 Posts: 45 Location: Baltimore

This procedure is also in the technical section, but I am repeating it here with further detail and part numbers. This procedure should work on any N/A 924 whether you are using a '79 with a snail setup or any other year with the Audi box. Of course, the donor tube must be for the same trans type. Also, since the shaft sizes are different, you must also use a trans made with the 25mm input shaft. For the '79, you can use any 931 tube and trans from years that had snail trans ('79 and '80 turbos). I have read that some later European 931s also used the snail. If you have an Audi box, there are many options. Audi equipped 931s, ('81 and '82), 944s, and the 951 will work. Again, you will need to buy both a trans and the tube. With either type, the linkage is the same. Where I live, the 25mm tube is just easier to find. The 25mm tube is splined 1"x23, or metric 25.4mmx23. A 931 or 944 disc will not fit because the diameter is too big for the N/A bellhousing. However, as someone else has discovered, a 1983 Ford Mustang 2.3L disc will fit. Some of these cars came with a German built 4 speed trans and used an 8 1/2" (215mm) clutch with the same spline size as the 931/944 torque tube. The NAPA part number is RCF899 and costs about $34/US. Use the 924 N/A release bearing and assembly should be no problem.
Daniel

Khal

endwrench · Joined: 07 Dec 2002 Posts: 1631 Location: Victor, Montana

Just to keep the confusion to a minimum here, I think it should be said the transmission or transmission input shaft also needs to be changed out. It is also 25mm. I suppose a custom coupler could be made but not easily.

Todd

JakeFrame · Joined: 28 Feb 2006 Posts: 93 Location: Ohio zip- 43501

So when I go to put a new clutch in my car I can used the clutch disc from the 83 mustang with 2.3 four banger?
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1976 924 Automatic- Body Only
1977 924 4 spd Red~For Sale~
1977 924 4 spd Yellow~For Sale~
1977 924 4 spd
1992 Mercedes 300e 4MATIC

endwrench · Joined: 07 Dec 2002 Posts: 1631 Location: Victor, Montana

Joes924Racer · Posted: Fri Dec 29, 2006 5:40 pm Post subject:

Shoot Todd I was really worried there for a minute
thought there was a shoe - in for an alternate disc for
the 5 sp snail 79. I thought I did my research before
/ I spent 265 clams for a Sachs disc.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.