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924 016/Y VA VB first gear synchro, 1/2/3 gear dog available

 
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kevingross  



Joined: 15 Apr 2015
Posts: 27
Location: Stow, MA, USA

PostPosted: Wed Oct 17, 2018 2:03 am    Post subject: 924 016/Y VA VB first gear synchro, 1/2/3 gear dog available Reply with quote

I’ve just had a small run of first gear synchros and first/second/third gear dog rings made, at the request of a customer, for 924 type 016/Y VA and VB transmissions. Porsche’s part number for the synchro was 931-302-301-02 (93130230102), and it has been unavailable for many years. The synchro ring has a unique chamfered profile that lets it sit into a channel in the gear without a retaining circlip. We’ve made the synchro with proper molybdenum coating to its friction surface, and a manganese phosphate coating of the rest of its surface to prevent galling of the ring against the gear.



The synchro gear teeth (“dog rings”) have never been available from Porsche or any other source, as far as I am aware. Both parts have been made for us by a well-known supplier of transmission parts for Porsches and other European vehicles.



Because the dog ring is not retained with a circlip (as it is for example in a 911 or 931 G31.01 transmission), it lacks a groove that can be used to pull the old one off the gear: it has to be cut off. I’m happy to offer removal and installation of the dog ring as a service. I can also provide instructions, but caution that it can be a bit of a challenge.

Contact me for pricing. I’ll cross-post this to the 924 forums I’m aware of, and please feel free to pass it along. This is not a profitable venture for me, but I am pleased to help keep everyone’s 924s on the road!
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Kevin
Catellus Engineering, Inc.
http://www.catellusengineering.com/
catelluseng@gmail.com
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Cédric  



Joined: 27 Aug 2004
Posts: 1746
Location: Sweden

PostPosted: Wed Oct 17, 2018 3:59 am    Post subject: Reply with quote

Wow, great job! I wish this was around when i had a 79 snailshell. I will pass the word on to the community here.
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´80 924 Turbo
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924RACR  



Joined: 29 Jul 2001
Posts: 8109
Location: Royal Oak, MI, USA

PostPosted: Wed Oct 17, 2018 10:34 pm    Post subject: Reply with quote

Awesome, nice job!!
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Vaughan Scott
Webmeister
'79 924 #77 ITB racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype
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Mike9311  



Joined: 14 Dec 2004
Posts: 669
Location: Chicago-ish

PostPosted: Wed Oct 17, 2018 11:10 pm    Post subject: Reply with quote

I have two of these so I will be contacting you, thanks! Very cool
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1980 931 ...off with the cobwebs
1982 931 Entwicklungsfahrzeug
1979 924 NA M471/M481 / ohne M650 Herausnehmbares Dach
0.5 1982 931 smashed parts car
1982 931 parts car?
1980 924 NA (R&D lightweight)
1982 931 WB wana-be GTR race car
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