KT100 Round Head

[sundog]

I saw a picture of a KT100 that looked like someone took an old style head and cut down the outer cooling fins to make the corners and sides of the head look rounded to match the front and back radius. Did Yamaha make a head like this or was that his own repair?

https://www.gokartguide.com/wp-content/uploads/2020/01/do-go-karts-have-titles.jpg
Thanks,
Sundog

 

[deznutz]

From your pic, looks like a kt100j

 

[phantomkartracer]

That's what I was going to say as well. KT100J (junior KT). They run them in Australia.

 

[sundog]

I wonder what the difference is to a KT100.

 

[shiftyag]

98cc 50x50 engine

 

[Phiddy]

Not like your pic, but there are lots of KT variables out there. Below is a KT100P

 

[Phiddy]

KT100J This looks like your pic

 

[Pete_Muller]

The J is lower horsepower. The last time I was in Australia (more than 20 years ago), I think they they had a Jr. class and Sr.-beginner classes that ran that engine. They did something like mandate a 4mm spacer between the cylinder and head for the little kids too, as I recall. Maybe someone from Australia can jump in and correct me on that.

PM

 

[phantomkartracer]

Not like your pic, but there are lots of KT variables out there. Below is a KT100P

We had a KT100P for a short period a while ago.

 

[garlandkart11]

Would Love to have a KT100P.

 

[Phiddy]

Have 2 brand new, never got homologated so not legal in anything but open.