allen burns
Active Member
- Joined
- Jul 8, 2010
- Messages
- 43
I feel like an idiot asking, but I need help tuning an OPS 80 engine. It is in an SGX 80/90 rigger with a Andy Brown tuned pipe. I have always run Mac 84's in this boat but it has gone to the engine gods with a broken case.
I can't seem to find the needle setting for this motor and have had no luck with pipe length changes. Pipe has been set between 11 1/2" to 12" and the needle has been set from 6.5" to 8" on my flow meter. Prop is an H32 with a little over 5.3" of pitch (andy brown prop) I am running Power Master 60% fuel.
Problem is if I get it running a little fat on the bench it never comes up on the pipe. Lean it a little and it dies on launch or eats a plug (MC 9) after two laps.
Motor is stock at this point and has stock carb. (2 needles- high and low) High speed needle has been taken out and I am using a third channel.
I am waiting for the A/A 84 to come out but until then I would like to get this motor running right. Any help would be appreciated. Also the boat is running at an altitude of 1000' or less.
Thanks
Allen Burns
I can't seem to find the needle setting for this motor and have had no luck with pipe length changes. Pipe has been set between 11 1/2" to 12" and the needle has been set from 6.5" to 8" on my flow meter. Prop is an H32 with a little over 5.3" of pitch (andy brown prop) I am running Power Master 60% fuel.
Problem is if I get it running a little fat on the bench it never comes up on the pipe. Lean it a little and it dies on launch or eats a plug (MC 9) after two laps.
Motor is stock at this point and has stock carb. (2 needles- high and low) High speed needle has been taken out and I am using a third channel.
I am waiting for the A/A 84 to come out but until then I would like to get this motor running right. Any help would be appreciated. Also the boat is running at an altitude of 1000' or less.
Thanks
Allen Burns
