I'm going to fit a Mikuni flatslide carb VM28-418 to my Montesa 348.

Any ideas on a firm that supplies 42 - 33 mm sleeve rubbers? The front spigot outer diameter of Mikuni is 33 mm. The outer diameter of Montesa inlet tube is 42 mm.

I've checked Allens and Hug's Bultaco. According to their websites they don't have this size.

The better solution is to take the carby to a competent machine shop and get them to precision machine a sleeve to the correct ID/OD and have it presessed on - job done.

Works a treat on the Keihn on my M199A

Jaan

Don't muck around with the carrby. Have your old one done up The Spanish knew what they where doing. Get it reconditioned, get a good tune up and stop trying to waste money on something that may not work!! Belldane

Hi Jaan,

Guess its tricky to find sleeve rubbers with two ID, not impossible though, search sleeves for others vehicles..

If you not have bought the carb yet, I could recommend PWK29S or OKO, its even worth the effort to prod a new manifold, 35/35 ID sleeves are easy to find.

Modern carbs offers major improvment verses twin shock std set up (or TYR std set up for that matter), ~a result from several years of prod development!

E.g. GG have probably not randomly chosen carb brand for their trials line...

I'm going to fit a Mikuni flatslide carb VM28-418 to my Montesa 348.

Any ideas on a firm that supplies 42 - 33 mm sleeve rubbers? The front spigot outer diameter of Mikuni is 33 mm. The outer diameter of Montesa inlet tube is 42 mm.

I've checked Allens and Hug's Bultaco. According to their websites they don't have this size.

Jaan,

Did you ever get the mikuni carb on the 348?? If so, what methods / manifold and airbox rubbers did you end up using to get it in place?

I'm also curious as to how to mount a PWK 29S to a 348, reguarding manifold and airbox rubbers. The Amal MKII has to go!