dlabkeeg
XS650 Addict
How does everyone feel about those 34mm Mikuni VM round slide carburetors, and are they a lot better then the OEM. Are they worth the $300.00. Just got my tax check, and I feel rich.
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34mm Mikuni VM round slide carburetors
- Thread starter dlabkeeg
- Start date
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- Tags
- carburetors mikuni
Inxs posted a link in the tech section here to the guide I wrote for the VM-series carbs. The primary advantage to using VM's is that they offer more tuning options for modified engines. There are no advantages and a number of serious disadvantages involved if you're fitting them to a stock motor; they're spelled out in the guide. You might want to read it before you make a decision.
grizld1, I am having trouble finding the link in the tech section,
slothy
Lurker
http://www.xs650.com/forum/showthread.php?t=43
VM Carbs - the same for mikuni roundslide carbs
www.amckayltd.com/VM34-36.pdf
VM Carbs - the same for mikuni roundslide carbs
www.amckayltd.com/VM34-36.pdf
destructo
??
+1 on 650central.
I was not reading your post properly grizld1 i read it as "i have posted" not "INXS has posted" 
shaas
shaas
I'm a fan of the round slides. I got my last set from MMM and I will get my next pair from him as well. I recommend removing the bowls to make sure all is well before installation.
Yep. IMO any new carb set should be stripped and cleaned before installation to prepare a jet list and ensure that any machining debris has been flushed out.
Is the base line carb recomendation on the attachent is were you all have started to tune?
How far of this base line did you all end up.
http://www.amckayltd.com/VM34-36.pdf
Thanks
Wally
How far of this base line did you all end up.
http://www.amckayltd.com/VM34-36.pdf
Thanks
Wally
Last edited:
DIRTY DOG
XS650 Guru
I have a set on 2 of my bikes love them never had any problems with them 1 set is
almost 6 years old and 20,000 miles on them can't go wrong
almost 6 years old and 20,000 miles on them can't go wrong
Whats your carb set up
DIRTY DOG
XS650 Guru
Not sure I'll have to pull them and check (it's only been 6 years) it time to pull and clean them any way the bike it bue for a make over too
I will mention that throttle cable routing is rather (too?) tight with the VM's and stock gas tanks.
Yes indeedy, gggGary; cables foul on the petcocks. Vacuum petcocks cause the worst trouble, but the OE manual taps are bulky too. One solution is to raise the back of the tank, but this can affect cruising range if taken too far. The best solution is to fabricate mounting plates and install more compact petcocks.
Wally, don't take the Carb Guide recommendations too literally. There's a lot of variation in fuel from place to place, and the baseline in the Guide was written with reference to what comes out of most pumps in the US. I have no idea how your local fuels might affect jetting. There's a very old national XS650 club in Australia, and some of the members are among the most tech-savvy guys on the planet. A quick Google search will find them, and if you hook up with that group you'll be glad you did.
Wally, don't take the Carb Guide recommendations too literally. There's a lot of variation in fuel from place to place, and the baseline in the Guide was written with reference to what comes out of most pumps in the US. I have no idea how your local fuels might affect jetting. There's a very old national XS650 club in Australia, and some of the members are among the most tech-savvy guys on the planet. A quick Google search will find them, and if you hook up with that group you'll be glad you did.
I even bought 10 of something like these, helps a bit.
You can twist the carb top inward a bit, that helps, but that may influence fuel level in the bowls....
You can twist the carb top inward a bit, that helps, but that may influence fuel level in the bowls....
