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Mikuni VM carb theory & tuning guide, enjoy.


iconic558
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6 minutes ago, iconic558 said:

Maybe useful, there's a few VM carb threads here. 

Mikuni Tuning and Jetting Guide - THE VINTAGE BIKE BUILDER
http://www.vintagebikebuilder.com/mikuni-tuning-and-jetting-guide.html

 

The OKO is a VM copy from what little I know so may help on these too. 😎

Yes that's a helpful book.

The OKO D slide is a copy of the Keihin and getting the jetting right on an OKO on a trials bike is very different to jetting a Mikuni VM

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Yes a very good structured write up and apply able to all kind of carbs to which you get different jets, needles, needle nozzles and slides and so on.
The only thing's left out is determining choke, the gas valve and the float weight.

I personal had no big joy in adjusting the VM at my TY it is very costly to obtain spare parts besides standard main jets for VM carbs in Germany,

Dell'Orto is so much easier to get and much less costly (beside the slides), thus I went that route.

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