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Austinsevenfriends
Zenith Carb - Printable Version

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RE: Zenith Carb - JonE - 20-11-2020

c.855 is only 19mm choke, so much more tractable than 21 or Speedy's heinous 25mm - and thus good mpg. Put it back on?!
The old Companion guru seems to suggest that 19mm is theoretically the best match for the engine size.

RE: Zenith Carb - Ian Williams - 20-11-2020

I get excellent performance on my pressurised Nippy engine with a 30 VM 5 855, I tried version's with 21mm and 24mm the 19mm appears to work the best. You need a good selection of jets to get optimum set up which takes a little time, I don't recall the sizes I used off hand and I am away in the middle of moving city's so cant look the details up present....Jon I believe I did give them to you at one time?

RE: Zenith Carb - JonE - 20-11-2020

they are in the article posted, I think, Ian... with lots of other peoples too...