ringmaster
Petty Officer 2nd Class
- Joined
- Aug 23, 2007
- Messages
- 125
my cousin angot his boat done its a 79 sea ray 26ft with the 260 thunderbolt4 and a alpha 1 drive. we put this all in the boat. everything works fine except it tops out a 4000 rpm's and 30 mph. i know it may not me exact. it planes out but not all the way its like its not getting over the finel hump to fully plain. it has a 19 pitch prop on it im not sure of the gear ratio ill look tomorrow. the engine and outdrive are matching and came out of a 19ft boat. could the gear ratio be wrong for this boat or is the prop to much pitch. i know its not timing or fuel all that is new even plugs cap and rotor.