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924 016/Y 016/Z VA VB 1st gear synchro, 1/2/3 gear dog

 
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kevingross  



Joined: 15 Apr 2015
Posts: 34
Location: Stow, MA, USA

PostPosted: Wed Oct 17, 2018 1:03 am    Post subject: 924 016/Y 016/Z VA VB 1st gear synchro, 1/2/3 gear dog 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 code VA and 016/Z code 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!
_________________
Kevin
Catellus Engineering, Inc.
http://www.catellusengineering.com/
catelluseng@gmail.com


Last edited by kevingross on Sat Jan 05, 2019 8:56 am; edited 1 time in total
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Cedric  



Joined: 27 Aug 2004
Posts: 2600
Location: Sweden

PostPosted: Wed Oct 17, 2018 2:59 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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1980 924 Turbo
www.instagram.com/garagecedric/
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924RACR  



Joined: 29 Jul 2001
Posts: 8794
Location: Royal Oak, MI, USA

PostPosted: Wed Oct 17, 2018 9:34 pm    Post subject: Reply with quote

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



Joined: 14 Dec 2004
Posts: 1678
Location: Chicago-ish

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

I have two of these so I will be contacting you, thanks! Very cool
_________________
1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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