neddle jets

[eddie]

Need to know the effects of the different needle jet shrouds have on tuning Mikuni carbs on a rotary valve engine thanks

[diesel pig]

Need to know the effects of the different needle jet shrouds have on tuning Mikuni carbs on a rotary valve engine thanks
MikuniOZ.com has a downloadable book that can explain it better than me.

[eddie]

Thanks but doesn't cover what I'm looking for. It's the top of the neddlejet that protrudes into the bore of the carb I need the info on.Was brief mention in the ese thread a few weeks ago but I can't find it

[F5 Dave]

With Flux brass can solder nicely. I wouldn't superglue unless you are planning a full annulus that would be retained by the needle in a failure.
But both methods are reversible.

First I would be inspecting the tube with magnifying glass, as any ovality will destroy fueling.

To answer your first question, have a squiz down this page at the carbs
https://pitboard.com.au/racer-test-ex-eugene-laverty-aprilia-rsw250/

It looks like tall brass shrouds under the slides.,

[Grumph]

Try using the search function on the ese thread. Try "needle jet shroud" as a search term - there's some of what you need there.

Spelling is key to searching.

[husaberg]

Bell covers it
https://3cyl.com/mraxl/manuals/bell/performance-tuning-graham-bell.pdf


if not there is plenty here
https://www.kiwibiker.co.nz/forums/album.php?albumid=4844

https://www.kiwibiker.co.nz/forums/attachment.php?attachmentid=301846&d=1411461089
https://www.kiwibiker.co.nz/forums/attachment.php?attachmentid=301847&d=1411461089

[eddie]

thanks for the replies they where what I was looking for,and Gregg for the spelling lesson I can now use the search

[husaberg]

thanks for the replies they where what I was looking for,and Gregg for the spelling lesson I can now use the search

hi posted the replies in ESE thread re the alloy.