Johnson140
Member
Hey all
First time on this site and I have found it very useful so far.
I just bought a 1987 140 HP Looper. compression is 125psi on each cylinder. I have been told thats not good compression, and I disagree. I think thats very good compression.
My problem is, with acceleration. When I go to get up on plane the bow jumps up but it does not plane. If you count to 5 the boat will rocket out of the water. I just rebuilt the carbs and that seemed to help the acceleration but its still hesitating. Also, when I am 3/4 throttle, and I go to WOT, it still hesitates before the extra power comes in.
Right now I am spinning a 14X19 prop and I am turning 6000rpms. I know thats too much So I am going to go to a 13.3/4 X 21 prop, to bring the rpms back down.
What else should I look for as to my problems with accelerating? Its a great running motor just this little hicup..
Any thoughts??
Thanks
First time on this site and I have found it very useful so far.
I just bought a 1987 140 HP Looper. compression is 125psi on each cylinder. I have been told thats not good compression, and I disagree. I think thats very good compression.
My problem is, with acceleration. When I go to get up on plane the bow jumps up but it does not plane. If you count to 5 the boat will rocket out of the water. I just rebuilt the carbs and that seemed to help the acceleration but its still hesitating. Also, when I am 3/4 throttle, and I go to WOT, it still hesitates before the extra power comes in.
Right now I am spinning a 14X19 prop and I am turning 6000rpms. I know thats too much So I am going to go to a 13.3/4 X 21 prop, to bring the rpms back down.
What else should I look for as to my problems with accelerating? Its a great running motor just this little hicup..
Any thoughts??
Thanks