Can'tFishEnough
Petty Officer 3rd Class
- Joined
- Apr 19, 2011
- Messages
- 86
OK, I need some advice on a pending repower - I'm not sure if this forum is only for hulls, but this seems like a building/design/restoration thing so if it needs to be moved I can do that.
I ended up with a good deal for a 1979 55hp Evinrude (titled with good compression and an old set of controls) and didn't have to deal with getting rid of or storing an old boat while trying to salvage the motor. I'll be starting a new link as well and will post the url when I get it done - but I still need advice.
I got the 55hp running somewhat by squirting fuel in the carb throats and cleaning off some terminals and setting up a "tiller handle" type circuit to go to the starter solenoid since the engine harness had been set up with truck/trailer style plugs and the controls have a standard big red plug.
So I think I'll get it titled and go ahead and spend the $ on carb kits and new plugs... but my question is how safe is this to run on a boat that is rated for 45 hp tiller motor. Or should I get this one running and sell it and the 25hp that is on there now and try to get a 40 or 45 tiller handle motor? (may be my eventual route anyway if I can actually find a decent used one).
Or do I need to find a way to limit the hp of the motor down some? I don't know if just retarding the timing, or blocking the wide open throttle position/max RPM is good or should I put some sort of restriction between carbs and intake manifold? I know that asking how to loose HP is probable sacrilegious- around here, but that may be where I am to stay safe.
Thanks.
new thread link coming shortly. If you wouldn't mind answering there It would be appreciated.
Specs:
-I don't find any laws against it in TX.
-Boat built in '94 16 ft 9 in Alumacraft V-16 lunker LTD rated for 45hp tiller
-current motor is 1994 25 hp Evinrude with tiller steering. Good for a light load but hard to push more than 2 adults. Current prop is a modified Evinrude prop 11x10 that is at top of RPM when I'm alone and in the middle when 3 adults and around 18-20mph at WOT.
(when I looked up a few '94 model two strokes they were in the 180-190 pound range.)
-Transom is 20 inches from clamp area to bottom of boat (But the clamp area is about 6 inches lower than side gunwales of boat- I think this is somewhat typical)
-Transom width is 68 inches at top (widest part) roughly 60 at water line with a very very shallow V.
-New to me old motor mod# 55975c weighs 187 based on the nadaguide info.
Would be trying to set up boat with a remote steering/control console
I'm curious since I don't really understand the differences between horse power measured at the block like the 79s or the prop like the 94s
I also don't know exactly why tiller handle boats are typically rated lower for max hp than console boats.
I'm not looking for "what if" legal advice - I've read lots about all that on other threads asking about over powering, I'm really looking for practical advice that you'd tell your son who just wanted to go out and be safe on the water with the grandkids... It seems to me that there is a range that changing to older horsepower type rating and to console steering might make the '79 55hp the equivalent of a '94 model 45hp.
Thanks.
I ended up with a good deal for a 1979 55hp Evinrude (titled with good compression and an old set of controls) and didn't have to deal with getting rid of or storing an old boat while trying to salvage the motor. I'll be starting a new link as well and will post the url when I get it done - but I still need advice.
I got the 55hp running somewhat by squirting fuel in the carb throats and cleaning off some terminals and setting up a "tiller handle" type circuit to go to the starter solenoid since the engine harness had been set up with truck/trailer style plugs and the controls have a standard big red plug.
So I think I'll get it titled and go ahead and spend the $ on carb kits and new plugs... but my question is how safe is this to run on a boat that is rated for 45 hp tiller motor. Or should I get this one running and sell it and the 25hp that is on there now and try to get a 40 or 45 tiller handle motor? (may be my eventual route anyway if I can actually find a decent used one).
Or do I need to find a way to limit the hp of the motor down some? I don't know if just retarding the timing, or blocking the wide open throttle position/max RPM is good or should I put some sort of restriction between carbs and intake manifold? I know that asking how to loose HP is probable sacrilegious- around here, but that may be where I am to stay safe.
Thanks.
new thread link coming shortly. If you wouldn't mind answering there It would be appreciated.
Specs:
-I don't find any laws against it in TX.
-Boat built in '94 16 ft 9 in Alumacraft V-16 lunker LTD rated for 45hp tiller
-current motor is 1994 25 hp Evinrude with tiller steering. Good for a light load but hard to push more than 2 adults. Current prop is a modified Evinrude prop 11x10 that is at top of RPM when I'm alone and in the middle when 3 adults and around 18-20mph at WOT.
(when I looked up a few '94 model two strokes they were in the 180-190 pound range.)
-Transom is 20 inches from clamp area to bottom of boat (But the clamp area is about 6 inches lower than side gunwales of boat- I think this is somewhat typical)
-Transom width is 68 inches at top (widest part) roughly 60 at water line with a very very shallow V.
-New to me old motor mod# 55975c weighs 187 based on the nadaguide info.
Would be trying to set up boat with a remote steering/control console
I'm curious since I don't really understand the differences between horse power measured at the block like the 79s or the prop like the 94s
I also don't know exactly why tiller handle boats are typically rated lower for max hp than console boats.
I'm not looking for "what if" legal advice - I've read lots about all that on other threads asking about over powering, I'm really looking for practical advice that you'd tell your son who just wanted to go out and be safe on the water with the grandkids... It seems to me that there is a range that changing to older horsepower type rating and to console steering might make the '79 55hp the equivalent of a '94 model 45hp.
Thanks.
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