Hello all,
I've got a 1969 Merc 1000 pushing a 1969 Glastron V-163 (16.5 foot). I've done the full tune up, lync and sync, etc., and motor is running as good as I think it can. The original tach didn't work so I recently got a used newer quicksilver working with the minor wiring adjustment (signal wire moved from switchbox to rectifier). Went out yesterday with a typical load (1800 lbs) and at WOT only turning 4200 RPMS, 32 mph according to original speedo (accuracy?? mph not big concern anyway), recommended WOT 4800-5300. I'd like to run at the top end of the range.
Reasonable??? Simple as needing lower pitched prop (currently 17?) or should that motor push this?
I verified last night: max advance 34*, spark on all cylinders, compression test 123-125 psi across all cylinders. Someone suggested setting advance to 36.5* (original specs). Not sure I want to do that?
Info:
-1969 16.5' Glastron v-163 gross weight 700 lbs (not water logged ? cut hole in floor and took out soaked foam)
-1969 Mercury 1000 (believe boat and motor to be original combo, height and setup seem to be good, anti-cavitation plate slightly above bottom of boat)
-3 blade aluminum prop, 17 pitch
-load: 4 adults and cooler...approximate total weight of boat, engine, load = 1800 lbs
-Tuning:
-checked compression and is good
-drained lower unit and put in new lube
-new fuel line and primer bulb
-rebuilt both fuel pumps with new check valves
-rebuilt all 3 carbs all new parts (floats, needle, seats, etc.)
-changed all 6 plugs, all have good spark
-did the link and sync and adjusted idle/mixture screws
I've got a 1969 Merc 1000 pushing a 1969 Glastron V-163 (16.5 foot). I've done the full tune up, lync and sync, etc., and motor is running as good as I think it can. The original tach didn't work so I recently got a used newer quicksilver working with the minor wiring adjustment (signal wire moved from switchbox to rectifier). Went out yesterday with a typical load (1800 lbs) and at WOT only turning 4200 RPMS, 32 mph according to original speedo (accuracy?? mph not big concern anyway), recommended WOT 4800-5300. I'd like to run at the top end of the range.
Reasonable??? Simple as needing lower pitched prop (currently 17?) or should that motor push this?
I verified last night: max advance 34*, spark on all cylinders, compression test 123-125 psi across all cylinders. Someone suggested setting advance to 36.5* (original specs). Not sure I want to do that?
Info:
-1969 16.5' Glastron v-163 gross weight 700 lbs (not water logged ? cut hole in floor and took out soaked foam)
-1969 Mercury 1000 (believe boat and motor to be original combo, height and setup seem to be good, anti-cavitation plate slightly above bottom of boat)
-3 blade aluminum prop, 17 pitch
-load: 4 adults and cooler...approximate total weight of boat, engine, load = 1800 lbs
-Tuning:
-checked compression and is good
-drained lower unit and put in new lube
-new fuel line and primer bulb
-rebuilt both fuel pumps with new check valves
-rebuilt all 3 carbs all new parts (floats, needle, seats, etc.)
-changed all 6 plugs, all have good spark
-did the link and sync and adjusted idle/mixture screws