GP 150 to suit ts185 + std crank.
Posted: Thu Jun 02, 2016 12:37 pm
Gday all ,this will be my first post.
I have dismembered an unfinished project a 1970 gp 150. all seems good other than a few missing bits and an 18mm carb . After removing the piston.. I guess I'm up for a rebore it measures 57.2 . Rings were stuck in their homes like crabs in rocks during a school excursion . One broke.
Seeing I need a rebore...
How much extra work do ya rekon it would be to fit a 185 piston?
Do I need to modify the piston / barrel ? the crank ? Port timings?
Have you done this with good results?
Cheers.
Sent from my SM-N920I using Tapatalk
I have dismembered an unfinished project a 1970 gp 150. all seems good other than a few missing bits and an 18mm carb . After removing the piston.. I guess I'm up for a rebore it measures 57.2 . Rings were stuck in their homes like crabs in rocks during a school excursion . One broke.
Seeing I need a rebore...
How much extra work do ya rekon it would be to fit a 185 piston?
Do I need to modify the piston / barrel ? the crank ? Port timings?
Have you done this with good results?
Cheers.
Sent from my SM-N920I using Tapatalk