imported_JD__
Petty Officer 1st Class
- Joined
- Jun 13, 2003
- Messages
- 243
I have a Johnson/Suzuki 140 4-stroke on my bass type boat. Johnson/Suzuki advertises that because of the gear reduction(2.38:1) this engine can swing a larger prop. All the SS props offered for these engines by John/SU are 14" in diameter. I've been going the aftermarket prop route and can't seem to find the right combination. The closest to "right so far is a Merc Trophy 4-blade 13-3/4" X 23. All the others were 3-bladed 13.5" diameter X 21,22 and a raked & double-cupped 24. None but the Trophy would give me any bow lift. Mid-range and top end are good w/the Trophy but is slower out of the hole than the others. How much of this is attributed to the 4-blade design or do you feel the larger diameter comes into play? Should I be running a 14" diameter prop? I realize this is a hypothetical question but I would appreciate any knowledgeable input or advice. I don't mind buying a new prop but I hate to buy two or three hoping to get one out of the lot that works well. Are most of you guys running 14" diameter props on your 4-stroke John/Su 90's, 115's and 140,s?<br />JD