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Message started by hotrod on 08/12/19 at 19:45:09

Title: UFO
Post by hotrod on 08/12/19 at 19:45:09

The instruction manual for the UFO mentions grinding off the intake roof section of the stock 36mm slide to match with the plastic UFO. It also says that it may need to have a hole drilled through the needle jet nozzle. If these changes are made and I'm not happy, can I go back to the previous set up, or is this now a UFO committed carb ?

Title: Re: UFO
Post by LANCER on 08/13/19 at 03:29:46

For that slide you are committed.
If you want to go back you would need a new slide.

Are you clear on where and what size holes to drill ?
And how much to remove from the front side of the slide ?

It takes some time to drill and remove material carefully, but the result is worth the effort, in my opinion.

However, if you are unsure of what you are doing then you should consider the possible cost of replacing the slide.

Title: Re: UFO
Post by hotrod on 08/13/19 at 08:18:43

I'm just matching the overhang lip on the intake side of the slide. I had to sand the mounting surface of the UFO to drop a little deeper into the slide because it would not let the slide close completely and made the idle screw adjuster useless. I can control the idle speed now. Using a #15 pilot jet, but may try closing it off. Still a little rich. Nothing road tested jet.

Title: Re: UFO
Post by Ruttly on 08/13/19 at 13:58:34

Don't worry about it continue your test n tune
Vm36 + UFO = real snappy throttle response , big fun
If you don't like it all these mikuni parts are redadily available on eBay

Title: Re: UFO
Post by hotrod on 08/13/19 at 14:05:02

Thanks Ruttly and LANCER.