Yamaha KT 100 Info

[Bird 1777]

Looking for information on KT 100 Yamaha engines. I have a Comet KT 100 that was built as a junior engine and I'm going to race it in the Yamaha masters class in VKA. What I'm wondering is anything other than a carb change required to make it competitive??? TIA

 

[flattop1]

With build sheet or documents comet could give you the best info .
Are you changing the exhaust too a pipe ?
Squish might be tight if it was a can engine .

 

[phantomkartracer]

Along with the carb & air filter adapter cup, I believe you will have to change the carb manifold also.

Call Comet & ask them. They can be very helpful.

Brian #89

 

[Ted Hamilton]

I'm pretty sure the blowdown is different for a Jr. can vs. a pipe too... My advice -- send it to a builder and tell them you want it converted. Perhaps Comet, since they built it originally. Of course you can probably find a Sr. KT-100 for around $400 these days too....bonus if it's from a known and still operating builder.