I got a 1973 Johnson 65hp for my project boat (turning it into a bass boat) in a trade and I want to mount it to my 16' 1958ish (unknown for sure) vhull.
1. This boat first of all has no capacity or HIN markings at all. The aluminum hull is from a 1958 or so ski boat. It had a 1966 50hp short shaft chrysler on it before. I did the calculations I found on hp capacity and here is what I came up wiith. 16' length x 5.5' tansom width x 2 - 90 = 78 (this is a calculation I got from a forum post). According to this I can safely run a 65hp.
2. The transom is short at 16". The cavitation (or ventilation) plate is roughly 2" under the the bottom of the boat at its highest bolt setting, which consequently puts the engine mount about 2" over the transom (which I do not believe is an issue). The top bolts are roughly 2" down from the top of the transom which seems to me to be about as close as I want to get to the top (but please advise if I am incorrect since I can plug and move them). I based this on the top bolt setting with the engine resting on the transom.
Can I run like this with decreased performance until I can buy a jack plate to raise the motor another couple inches or are there other concerns I need to be aware of?
3. I am building the boat inside from scratch. i built the trasnom using a 2 3/4 pieces of plywood laminated using a polyurethane adhesive. I then sandwhiched the outside 1 1/2" piece to a 3/4" piece on the inside, again using a poly adhesive to seal it and hold it togther. It is solid as is. It is also secured to the inner floor framing. So this transom is SOLID! However, this is a short 16" transom. is this a concern with swamping? I have not yet floated the boat with the added weight for my floor build up. I have a high splash well built in. But I ommitted adding risers to the transom on each side of the motor so the trasnom is flat all the way across. Shoud I build up to each side of the spash well to direct water into the splash well? Say, build it up 3" on each side of the motor to direct the incoming water to the splash well?
4. This motor has no steering tube, however it came with am aftermarket (I am assuming) "Mountain Marine - Denver Colorado" Steering tube. The boat it was on had rack and pinion steering which I let go with the boat. I am looking at buying a Teleflex NFB single cable steering cable setup. Are steering tube sizes standard? Meaning, is this cable setup going to bolt directly to this steering tube setup I have? The cable it was previously attached to had a nut that threaded onto the the tube and to the cable end of the fixed part of the cable.
Sorry to throw so many questions in one post, but these are my last real issues to contend with and I just want to make sure I am good to go.
1. This boat first of all has no capacity or HIN markings at all. The aluminum hull is from a 1958 or so ski boat. It had a 1966 50hp short shaft chrysler on it before. I did the calculations I found on hp capacity and here is what I came up wiith. 16' length x 5.5' tansom width x 2 - 90 = 78 (this is a calculation I got from a forum post). According to this I can safely run a 65hp.
2. The transom is short at 16". The cavitation (or ventilation) plate is roughly 2" under the the bottom of the boat at its highest bolt setting, which consequently puts the engine mount about 2" over the transom (which I do not believe is an issue). The top bolts are roughly 2" down from the top of the transom which seems to me to be about as close as I want to get to the top (but please advise if I am incorrect since I can plug and move them). I based this on the top bolt setting with the engine resting on the transom.
Can I run like this with decreased performance until I can buy a jack plate to raise the motor another couple inches or are there other concerns I need to be aware of?
3. I am building the boat inside from scratch. i built the trasnom using a 2 3/4 pieces of plywood laminated using a polyurethane adhesive. I then sandwhiched the outside 1 1/2" piece to a 3/4" piece on the inside, again using a poly adhesive to seal it and hold it togther. It is solid as is. It is also secured to the inner floor framing. So this transom is SOLID! However, this is a short 16" transom. is this a concern with swamping? I have not yet floated the boat with the added weight for my floor build up. I have a high splash well built in. But I ommitted adding risers to the transom on each side of the motor so the trasnom is flat all the way across. Shoud I build up to each side of the spash well to direct water into the splash well? Say, build it up 3" on each side of the motor to direct the incoming water to the splash well?
4. This motor has no steering tube, however it came with am aftermarket (I am assuming) "Mountain Marine - Denver Colorado" Steering tube. The boat it was on had rack and pinion steering which I let go with the boat. I am looking at buying a Teleflex NFB single cable steering cable setup. Are steering tube sizes standard? Meaning, is this cable setup going to bolt directly to this steering tube setup I have? The cable it was previously attached to had a nut that threaded onto the the tube and to the cable end of the fixed part of the cable.
Sorry to throw so many questions in one post, but these are my last real issues to contend with and I just want to make sure I am good to go.
