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-   -   Another ID question on TBs...curiosity more than anything. (http://forums.pelicanparts.com/porsche-911-technical-forum/1025908-another-id-question-tbs-curiosity-more-than-anything.html)

speedo 04-07-2019 11:23 AM

Another ID question on TBs...curiosity more than anything.
 
I took the induction off a complete 2.2 S MFI engine years ago and set it aside. Recently while organizing some TBs and stacks, I measured up the top and bottom dimensions to confirm 2.2 S specs and they confirmed...basically 38mm top (to stacks) and 36mm bottom (to heads).

http://forums.pelicanparts.com/uploa...1554664272.JPG
http://forums.pelicanparts.com/uploa...1554664272.JPG

They do not look molested/enlarged ...very original. Old dirty and free moving, but original. Part numbers however reflect a 2.2 E? Obviously it is possible that at some point in time they were machined...and just difficult to confirm. On the other hand as these came off an original looking 2.2 S induction, whats the chance of a mixed up casting for a 2.2 E getting machined at the factory to 2.2 S specs? Weird stuff happened "back in the day", just haven't seen this before. And I have seen lots of sets of mag TBs and stacks "massaged" and it is pretty easy to tell...usually too nice or a crappy job.

It really doesn't matter now...they are what they are. Perfectly functional, just an incorrect casting number.

TIA Speedo


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