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G31 1st gear synchro
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v8carreragts  



Joined: 05 Sep 2003
Posts: 665
Location: Tucson, AZ

PostPosted: Fri May 08, 2009 1:23 pm    Post subject: Reply with quote

I should also say that I should be finding out for sure some time this summer. I am trying to buy a euro G31 now (for the rimg and pinion) and will be going through it for my v8 car.

I'd like to get the euro side cover, pump and cooler parts from a euro 915 but they are prohibitly expensive. There is a set on e-bay now for $1499.

http://cgi.ebay.com/ebaymotors/Porsche-911-915-transmission-transaxle-parts_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el1116QQhashZitem1e54a502ebQQitemZ130269119211QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories
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kevingross  



Joined: 15 Apr 2015
Posts: 26
Location: Stow, MA, USA

PostPosted: Tue Sep 26, 2017 1:54 am    Post subject: Reply with quote

A customer of mine just forwarded a link to this old posting and I thought I'd share what I wrote back to him, hoping to clarify the original question for future readers.

Regarding the Porsche parts system, no, you cannot go by the numbering as suggested. There are parts where for example 915-302-301-00 and 915-302-301-01 may be an original and a supersession, respectively, and so interchangeable. But it’s also often the case that the later version number is incompatible because it is for a different, later model or requires matched changes to other parts that go with it. 915-302-301-30 could be a motorsports version. 915-302-301-00 and 928-302-301-00 (changing the first group) could be completely different parts, mechanically, related only by the fact that the second and third groups point to the same major assembly (302) and part-type (301) within that assembly.

Finally, there is a different coding scheme used for “generic” or DIN-spec parts that Porsche switched to mid-’60s. As an example, take part 900-074-001-00. The 900 indicates it is a standard part. 074 indicates it is a DIN 931 hex bolt. 001 is assigned to the M4x15 size of the bolt. The final group, 00, is the part material or finish, in this case plain steel.
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Catellus Engineering, Inc.
http://www.catellusengineering.com/
catelluseng@gmail.com
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