Anybody Know JetPro?

[brapperdoodle]

Got this engine in a ski my brother bought a few years ago… just curious if anybody knows who or what this is. It’s just a stock 701 61x

 

[WFO Speedracer]

Cylinders are usually marked like that when someone ports them, you sure the cylinder hasn't been ported ?

 

[Jr.]

JetPro was a performance race shop out of Havasu in the late 90’s

 

[brapperdoodle]

Cylinders are usually marked like that when someone ports them, you sure the cylinder hasn't been ported ?

Yes it definitely has porting! I worded that poorly, I meant it’s just a basic single carb engine with stock head and stock everything else.

Anybody know what the initials are on the exhaust side? Like I said, I’m just curious more than anything.

 

[Storbeck]

If you take it apart post pics. Always cool to see how porting was done back in the day and also professional porting but not somebody currently selling so not giving away anybody's secrets.