It looks like there are two (or more) jet kits available for CV40 carburetors:
29045-97B for Evos
and
29604-00A for Twin Cams
Do you by any chance know if the needles in these two kits are different?
If I'm not mistaken we used a TC kit (only one in stock) in my Evo and perhaps this possible needle difference is the reason for rich AFR from 2000 to 4000 rpm.
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destructions are your friend
(https://i.imgur.com/eTQ4Thi.png)
(https://i.imgur.com/rXD8ie6.png)
Much obliged. :beer:
So, emulsion tube and needle are the same between Evo and TC. Main differences are jet sizes and different spring. And as we had TC kit the E-clip was in #4 groove (TC instruction) instead of #3 groove (Evo).
The most important is to uncover idle jet and adjust.
Opinions vary widely, but this one is: it's rich because it's a Dynojet kit!
I don't have one on hand, have thrown them all in the trash, but I recall the Dynojet emulsion tube has less holes than OEM.
I've tried and removed several of these. Always went back to OEM parts. YMMV!
-JW
Quote from: JW113 on January 04, 2020, 11:01:50 AM
Opinions vary widely, but this one is: it's rich because it's a Dynojet kit!
I don't have one on hand, have thrown them all in the trash, but I recall the Dynojet emulsion tube has less holes than OEM.
I've tried and removed several of these. Always went back to OEM parts. YMMV!
-JW
....... :agree: :agree:
----- :chop:
00 up twin cams have a different acceleration nozzle check valve in the float bowl. The 00 up kit does not come with the nozzle and check ball.