torbjorn
Petty Officer 3rd Class
- Joined
- Jan 31, 2010
- Messages
- 80
No Title
I have one with a 1986 Johnson 60 (70 hp at the crank, 60 at the propshaft). The boat sat outside for 6 yrs. before I got it but is solid, only the carpet had to be replaced. It is, however, as heavy as a log, according to old specs it weighed 750 lb dry when new. I rebuilt the 70 and converted it to 75 hp at the crank (Stinger). With a jack plate, hacked up to 25 1/2" and with a nice Stiletto 19 that I cut down and trimmed to chopper style (also repitched it), the boat runs 41 mph with two people, 44 mph with one. It handles rough water well, the bottom is a prettty close copy of an Allison bass boat and is straight, no hook or rocker. Without the jack plate and with the cavitation plate slightly submerged the rig ran 37 mph with two people on board. Better be careful to check the transom for rot or at least for delamination. Peck the transom and bottom with a small metal object (pocket knife, wrench) and listen for hollow spots (dull sound). If you're in doubt about the transom then trim the motor down and jump up and down on the cavitation plate-there should be no transom movement. That motor has the 3-piece exhaust manifoel. To avoid disaster, remove it (yuou can do it without pulling the powerhead) and resurface both sides of the thin inner exhaust plate. The plate warps and allows water to be sucked into the exhaust ports on the intake stroke. The motor I got had crank and rods ruined that way, but I'm an old Stinger fan, I rebuilt and raced them in the 1970s and 1980s, and I had plenty of parts on hand. Crank, rods, pistons. You don't want to have to buy those new!
Also, the Johnson 60/75 weighs about 230 lb, and more weight on the transom (even without the jack plate) would be a big problem. The boat sits very low in the water at the rear when at rest, and when coming down off a plane I have to goose the throttle at exactly the right time to avoid taking in water over the transom. More hp for the boat is not a problem, but more weight would be a serious problem. As I said, the boat itself is very heavy.
I have one with a 1986 Johnson 60 (70 hp at the crank, 60 at the propshaft). The boat sat outside for 6 yrs. before I got it but is solid, only the carpet had to be replaced. It is, however, as heavy as a log, according to old specs it weighed 750 lb dry when new. I rebuilt the 70 and converted it to 75 hp at the crank (Stinger). With a jack plate, hacked up to 25 1/2" and with a nice Stiletto 19 that I cut down and trimmed to chopper style (also repitched it), the boat runs 41 mph with two people, 44 mph with one. It handles rough water well, the bottom is a prettty close copy of an Allison bass boat and is straight, no hook or rocker. Without the jack plate and with the cavitation plate slightly submerged the rig ran 37 mph with two people on board. Better be careful to check the transom for rot or at least for delamination. Peck the transom and bottom with a small metal object (pocket knife, wrench) and listen for hollow spots (dull sound). If you're in doubt about the transom then trim the motor down and jump up and down on the cavitation plate-there should be no transom movement. That motor has the 3-piece exhaust manifoel. To avoid disaster, remove it (yuou can do it without pulling the powerhead) and resurface both sides of the thin inner exhaust plate. The plate warps and allows water to be sucked into the exhaust ports on the intake stroke. The motor I got had crank and rods ruined that way, but I'm an old Stinger fan, I rebuilt and raced them in the 1970s and 1980s, and I had plenty of parts on hand. Crank, rods, pistons. You don't want to have to buy those new!
Also, the Johnson 60/75 weighs about 230 lb, and more weight on the transom (even without the jack plate) would be a big problem. The boat sits very low in the water at the rear when at rest, and when coming down off a plane I have to goose the throttle at exactly the right time to avoid taking in water over the transom. More hp for the boat is not a problem, but more weight would be a serious problem. As I said, the boat itself is very heavy.
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