SHickey
Petty Officer 1st Class
- Joined
- Apr 29, 2011
- Messages
- 263
Hello
My 1987 '19 Bluefinn is running great after I had the carb rebuilt. The motor is a 2.3 liter with your basic Cobra out-drive. The problem I am having with it is that it seems to get boggy at the upper 4000 RPM levels. The motor sounds like it is straining or dieseling if that makes any sense. I have the recommended 13 1/4 X17P aluminum prop and it gets up to @ 32-33 MPH trimmed out according to my GPS. If I push it to 5000 RPM there is no increase in speed.
I am not a speed demon but I would like to get the motor to perform at it's best and it seems to work perfectly until I want to top end it.
I was planning on messing with the timing to see if I can eliminate the higher RPM strain or considering a prop with a slightly lower pitch or smaller diameter.
Has this situation happened to anyone else and how was it resolved?? Any help is always most appreciated!!
SH
My 1987 '19 Bluefinn is running great after I had the carb rebuilt. The motor is a 2.3 liter with your basic Cobra out-drive. The problem I am having with it is that it seems to get boggy at the upper 4000 RPM levels. The motor sounds like it is straining or dieseling if that makes any sense. I have the recommended 13 1/4 X17P aluminum prop and it gets up to @ 32-33 MPH trimmed out according to my GPS. If I push it to 5000 RPM there is no increase in speed.
I am not a speed demon but I would like to get the motor to perform at it's best and it seems to work perfectly until I want to top end it.
I was planning on messing with the timing to see if I can eliminate the higher RPM strain or considering a prop with a slightly lower pitch or smaller diameter.
Has this situation happened to anyone else and how was it resolved?? Any help is always most appreciated!!
SH
