FAQ  •  Register  •  Login

smallest mikuni for a UL

Moderators: Curt!, Pa

<<

helsingborg

Posts: 81

Joined: Tue Jan 29, 2008 8:08 pm

Post Wed Apr 07, 2010 6:36 pm

smallest mikuni for a UL

Any of you guys are using a smaller than 34mm mikuni in your U model.
Just got a 30mm round slide mikuni and was wondering if it is possible/practical using it in a stock UL...the carburetor has the standard factory jetting (pilot 40, main 250, slide 2.5, needle 159 6F5, needle jet P5, air jet 2.0)
I have the victory library book but the suggestions for 74" displacement doesn't include the VM 30mm...
Any suggestions appreciated!
Karl.
<<

panic

Post Wed Apr 07, 2010 9:06 pm

Re: smallest mikuni for a UL

..
Last edited by panic on Sun Nov 28, 2010 6:20 pm, edited 1 time in total.
<<

helsingborg

Posts: 81

Joined: Tue Jan 29, 2008 8:08 pm

Post Thu Apr 08, 2010 7:11 am

Re: smallest mikuni for a UL

Thanks, I thought the same about the slide. Any suggestions for the needle/needle jet?
Karl.
<<

panic

Post Thu Apr 08, 2010 7:37 am

Re: smallest mikuni for a UL

..
Last edited by panic on Sun Nov 28, 2010 6:20 pm, edited 1 time in total.
<<

helsingborg

Posts: 81

Joined: Tue Jan 29, 2008 8:08 pm

Post Thu Apr 08, 2010 2:39 pm

Re: smallest mikuni for a UL

Thanks!
<<

flatstips

User avatar

Posts: 51

Joined: Sat Dec 29, 2007 8:35 am

Post Fri Apr 09, 2010 4:42 pm

Re: smallest mikuni for a UL

Hello,
what jetting would you suggest for the 34mm Mikuni on my stock 41U ?
Thank you, Tom
<<

helsingborg

Posts: 81

Joined: Tue Jan 29, 2008 8:08 pm

Post Fri Apr 09, 2010 7:10 pm

Re: smallest mikuni for a UL

I highly recommend you buying the "Mikuni Tuning Harley-Davidsons" from Victory Library.
I bought mine from their website http://victorylibrary.com
This book has the info you need, including the exact jets for a UL.
AFAIK the writer is a board member, right panic?
Karl.
<<

helsingborg

Posts: 81

Joined: Tue Jan 29, 2008 8:08 pm

Post Fri Apr 09, 2010 7:17 pm

Re: smallest mikuni for a UL

You carburetor is a VM round slide? I forgot to add, the book covers mainly round slide VM Mikunis.
Karl.
<<

panic

Post Sat Apr 10, 2010 12:00 am

Re: smallest mikuni for a UL

Glad to hear you found it useful, but yes, it's for VM round slides only.
<<

flatstips

User avatar

Posts: 51

Joined: Sat Dec 29, 2007 8:35 am

Post Sat Apr 10, 2010 8:06 am

Re: smallest mikuni for a UL

thank you for the link, helsingborg.
I will order the book as soon I can get some $ notes here in Spain. ( I don't have paypal).
Yes, I have the VM round slide Mikuni.
Tom
<<

42Flathead80

Posts: 12

Joined: Tue Mar 30, 2010 10:04 pm

Post Tue Apr 13, 2010 6:43 pm

Re: smallest mikuni for a UL

I just put a 38mm VM on a 42 UL, and have some unreal cranking problems that turned out to be the most expensive little nothing. It cranks, runs like a dream, idles so slow I wonder if it will keep running, and I changed nothing from the stock needle and jets it came with. Plugs look wonderful, and I ain't even in Kansas. I did change the throttle cable that came with it by reversing a Harley cable and threading the end of the ninety. Works great.

By the way, there is a comprehensive VM tuning Manual on Mikuni's web site you can download for free. I have Victory's manual also, and it is a good one.

This is the link for the free tuning manual download.
http://klx250s.suncup.net/Misc%20Docs/T ... 20Carb.pdf

You are going to love that VM!

Jim
<<

flatstips

User avatar

Posts: 51

Joined: Sat Dec 29, 2007 8:35 am

Post Wed May 05, 2010 6:18 am

Re: smallest mikuni for a UL

got my Mikuni Tuning from Victory Library today. WOW - it only tooks 3 days to Spain. Compared with Germany that takes 12 days :?
Will keep me in trouble for a while to translate and understand everything. Thanks again for the link :)
<<

George Greer

User avatar

Posts: 961

Joined: Wed Aug 28, 2002 12:01 am

Location: Markt Einersheim, Germany

Post Wed May 05, 2010 8:59 pm

Re: smallest mikuni for a UL

Anythng coming to Germany takes forever....as does sending anything from here.

Sorry....just had to comment. :oops:

George
<<

45Brit

Posts: 1399

Joined: Tue Nov 27, 2007 2:29 am

Post Wed May 05, 2010 11:47 pm

Re: smallest mikuni for a UL

don't know about Germany, but we did pass by Helsingborg last week, I was a week late joining the vessel because of the volcano. I'll wave as we go back through.... :D

waiter, waiter, there's volcanic ash in my soup
yes,sir, it's a no-fly zone...
Shoot, a man could have a good weekend in Dallas with all that stuff...

Return to Big Twin Flatties

Who is online

Users browsing this forum: No registered users and 4 guests

Powered by phpBB © 2000, 2002, 2005, 2007, 2012 phpBB Group.