Mid 80's 2 cyl, 2 stroke Johnson 50 HP

by James
(Central Texas)

I have a mid 80’s, 50 HP, 2 Cyl, Johnson

I bored it 0.040 over, Wiesco pistons, milled the head 0.100 and installed performance reeds
The compression is at 185 to 190 per cylinder and I thought this may be to much !!
To my surprise the motor did not improve in performance but just a minimum amount
I am wondering if I need to open the exhaust up more and do you have a suggestion for this and also open the throttle bores in the carburetors up more so it can breath better ??
Any advice would be appreciated

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Johnson Outboard Forum.