103Control
Cadet
- Joined
- Jul 8, 2006
- Messages
- 12
Hello,
Just thought I'ld ask for some direction here on the 1977 55 hp Evinrude on my sons 14' McKee craft. I had put a new 17" pitch prop on it when it first hit the water a few weeks ago and it rauns good up to 33 mph at 3/4 WOT but try and push it to wide open and it boggs down and you have to pull the throttle back to where you were. So I put the 15" pitch prop back on it that came with it and the same thing happens, only the speedo was reading about 27-28 MPH at the same RPMs.
Now the RPMs could be off since we are using the old Tach that was on the boat which used to have a Suziki 40. I was told here that it would work if I swithed it to 6 pole on the back of the Tach and some one else said that these old engines need a ten pole Tach ?
Any ways the Tach was reading 4300 RPMs although it sounded to me like it was cranking 5500 RPMs and trying to push more throttle would bog it down as if it was not getting enough gas to go any faster. I just replased the coils today and cleaned the plugs and fuel filter, checked fuel lines etc.
I'm going to throw it back in the bay at high tide and see what happens now but maybe some one here could tell me if the is a REV limiter or some timing adjustment I should try Etc. ?
Thanks Again, AL
Just thought I'ld ask for some direction here on the 1977 55 hp Evinrude on my sons 14' McKee craft. I had put a new 17" pitch prop on it when it first hit the water a few weeks ago and it rauns good up to 33 mph at 3/4 WOT but try and push it to wide open and it boggs down and you have to pull the throttle back to where you were. So I put the 15" pitch prop back on it that came with it and the same thing happens, only the speedo was reading about 27-28 MPH at the same RPMs.
Now the RPMs could be off since we are using the old Tach that was on the boat which used to have a Suziki 40. I was told here that it would work if I swithed it to 6 pole on the back of the Tach and some one else said that these old engines need a ten pole Tach ?
Any ways the Tach was reading 4300 RPMs although it sounded to me like it was cranking 5500 RPMs and trying to push more throttle would bog it down as if it was not getting enough gas to go any faster. I just replased the coils today and cleaned the plugs and fuel filter, checked fuel lines etc.
I'm going to throw it back in the bay at high tide and see what happens now but maybe some one here could tell me if the is a REV limiter or some timing adjustment I should try Etc. ?
Thanks Again, AL
