New to buy a new OB motor and need advice.

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J

John Gillespie Jr.

I need to by a new OB motor for my 1977 OD 22. It has a bracket on the transom to mount the motor. The advise a need is 1) should I buy a 20 or 25 inch shaft motor 2) what HP do you recommend. I am thinking about buying a 25 inch shaft Nissan 9.8 HP. Thanks.
 
J

John Gillespie Jr.

I need to by a new OB motor for my 1977 OD 22. It has a bracket on the transom to mount the motor. The advise a need is 1) should I buy a 20 or 25 inch shaft motor 2) what HP do you recommend. I am thinking about buying a 25 inch shaft Nissan 9.8 HP. Thanks.
 
Jul 8, 2004
361
S2 9.1 chelsea ny
thoughts

I believe that the 20 in is the long shaft and the 25 in is the super long shaft. (15in. would be the short shaft) If that is correct then the 20 would do fine. 9.8 is more than enough for the 22. I had a Nissan 6 hp on my O'22 and it pushed the boat to hull speed at 3/4 throttle. Yopu could go down to the 6hp and save money without losing power. Take a look at www.marine-outboards.com sometimes they have GREAT deals
 
Jul 8, 2004
361
S2 9.1 chelsea ny
thoughts

I believe that the 20 in is the long shaft and the 25 in is the super long shaft. (15in. would be the short shaft) If that is correct then the 20 would do fine. 9.8 is more than enough for the 22. I had a Nissan 6 hp on my O'22 and it pushed the boat to hull speed at 3/4 throttle. Yopu could go down to the 6hp and save money without losing power. Take a look at www.marine-outboards.com sometimes they have GREAT deals
 
M

Mike

A few things to keep in mind

When you are buying, keep in mind: Buy the longest shaft model available. Although 20 inches is considered a long shaft model, the propeller will be lifted out of the water in rough (and not so rough) conditions. You won't be sorry for going with the 25 inch model. However, seeing as how most manufacturers don't offer them, and those that do don't offer them on the smaller models, this may not be an option for you. The 9.8 horsepower is more than adequate for the Oday 22. I have an 8 for my 23, and it pushes the boat at hull speed at 3/4 throttle. If you are going with a two stroke, 6 hp will be adequate, 8 more than enough. I just bought a Nissan 8 hp two stroke long shaft w/electric start, and it has been very reliable. If you are thinking of going for a four stroke engine, you can go with an even smaller engine. Four strokes produce more torque at lower rpms. In my experience, a 6 hp four stroke will be roughly equivalent to a an 8 or 9.9 hp two stroke. It will also cost and weigh more. Also critical: if you go with a four stroke, its not just the weight rating that is important; make certain your mounting bracket is specifically rated to carry a four stroke engine. That extra torque will put extra strain on the bracket. You don't want that thing cracking your transom. If the bracket on your boat is original equipment, it probably can't handle a four stroke; there were no four stroke outboards when Oday was in business.
 
M

Mike

A few things to keep in mind

When you are buying, keep in mind: Buy the longest shaft model available. Although 20 inches is considered a long shaft model, the propeller will be lifted out of the water in rough (and not so rough) conditions. You won't be sorry for going with the 25 inch model. However, seeing as how most manufacturers don't offer them, and those that do don't offer them on the smaller models, this may not be an option for you. The 9.8 horsepower is more than adequate for the Oday 22. I have an 8 for my 23, and it pushes the boat at hull speed at 3/4 throttle. If you are going with a two stroke, 6 hp will be adequate, 8 more than enough. I just bought a Nissan 8 hp two stroke long shaft w/electric start, and it has been very reliable. If you are thinking of going for a four stroke engine, you can go with an even smaller engine. Four strokes produce more torque at lower rpms. In my experience, a 6 hp four stroke will be roughly equivalent to a an 8 or 9.9 hp two stroke. It will also cost and weigh more. Also critical: if you go with a four stroke, its not just the weight rating that is important; make certain your mounting bracket is specifically rated to carry a four stroke engine. That extra torque will put extra strain on the bracket. You don't want that thing cracking your transom. If the bracket on your boat is original equipment, it probably can't handle a four stroke; there were no four stroke outboards when Oday was in business.
 
J

John Gillespie Jr.

Thinking about a few things.

Mike, Thanks for all your very sound advice. You have answered by question about shaft length. That the 25" shaft is the way to go. I have been looking at Nissan OBM on-line. I don't think they are making two stroke motor any more with 8 HP or smaller with a 25" shaft. You say that 6-8 HP two stroke would do the job for me. I will go around to Bass Pro/Cabbelas and see if they have any left over/new 6-8 HP 6 two stroke 25" Nissan. You say you have a just bought a Nissan 8 HP two stroke with electric start. Where did you buy it? Was is new? Was it 25" shaft. Finally I was very worried about the extra weight/torque on the bracket and transom. You have confirmed my worst fears. New motor at the bottom of the lake. Transom torn of and boat sunk on maiden voyage. Signed: Looking for a Nissan 8HP extra-long shaft in Kansas. Thanks again. Big Smile
 
J

John Gillespie Jr.

Thinking about a few things.

Mike, Thanks for all your very sound advice. You have answered by question about shaft length. That the 25" shaft is the way to go. I have been looking at Nissan OBM on-line. I don't think they are making two stroke motor any more with 8 HP or smaller with a 25" shaft. You say that 6-8 HP two stroke would do the job for me. I will go around to Bass Pro/Cabbelas and see if they have any left over/new 6-8 HP 6 two stroke 25" Nissan. You say you have a just bought a Nissan 8 HP two stroke with electric start. Where did you buy it? Was is new? Was it 25" shaft. Finally I was very worried about the extra weight/torque on the bracket and transom. You have confirmed my worst fears. New motor at the bottom of the lake. Transom torn of and boat sunk on maiden voyage. Signed: Looking for a Nissan 8HP extra-long shaft in Kansas. Thanks again. Big Smile
 
J

John Gillespie Jr.

Thinking Thoughtfully

Mike, C. Thanks for your reply. Glad to here that you can use a 6 HP Nissan on your OD 22 and it can get the job done. Pease tell me the shaft length on your motor and is it a 2 or 4 stroke? I am leaning to 25" shaft. Will look at the web site you mentioned in your reply for OBM's for sale. Many thanks, John
 
J

John Gillespie Jr.

Thinking Thoughtfully

Mike, C. Thanks for your reply. Glad to here that you can use a 6 HP Nissan on your OD 22 and it can get the job done. Pease tell me the shaft length on your motor and is it a 2 or 4 stroke? I am leaning to 25" shaft. Will look at the web site you mentioned in your reply for OBM's for sale. Many thanks, John
 
W

Warren

Outboard Power

I've had my O'Day 22 for over 33 years...... First Motor: Johnson 3 HP Long Shaft, used it for 8 years. Abit under power in a current. Second Motor: Volvo 9.9 HP lots of power & light weight (48 lbs.) Current motor: Evinrude 6 HP (2 Cycle) long shaft, perfect. Suggest you stick with a 2 cycle, because of the weight. Also, 6 HP will do all you want to do. Don't loose sight of the fact that your a sailboat, not a motorboat. You will be doing alot more sailing than motoring. Good Luck!
 
W

Warren

Outboard Power

I've had my O'Day 22 for over 33 years...... First Motor: Johnson 3 HP Long Shaft, used it for 8 years. Abit under power in a current. Second Motor: Volvo 9.9 HP lots of power & light weight (48 lbs.) Current motor: Evinrude 6 HP (2 Cycle) long shaft, perfect. Suggest you stick with a 2 cycle, because of the weight. Also, 6 HP will do all you want to do. Don't loose sight of the fact that your a sailboat, not a motorboat. You will be doing alot more sailing than motoring. Good Luck!
 
Jul 8, 2004
361
S2 9.1 chelsea ny
20 in. shaft

John my outboard was a nissan 6hp 4 stroke. 20 inch shaft. It used nearly no gas, was quieter than the 2 stroke, and was actually LIGHTER than my Johnson 6hp 2 stroke Fisherman (circa 1975) outboard. I sail on the Hudson river where 2-3kt. current is possible and it was more than enough. I paid $1150 for it 3 years ago. Good Luck
 
Jul 8, 2004
361
S2 9.1 chelsea ny
20 in. shaft

John my outboard was a nissan 6hp 4 stroke. 20 inch shaft. It used nearly no gas, was quieter than the 2 stroke, and was actually LIGHTER than my Johnson 6hp 2 stroke Fisherman (circa 1975) outboard. I sail on the Hudson river where 2-3kt. current is possible and it was more than enough. I paid $1150 for it 3 years ago. Good Luck
 
D

david schoonmaker

ideas

Just went through this process and ordered a dahatsu? 6hp 4stroke 20 in shaft for my boat becasue the weight less than 50lbs, quality and price. A mix up happended with shipping and was given a Nissan 6hp 4 stroke for same price about 1100~. We sail in the St Johns out of Melbourne Fl, runs great, quite, efficient, easy to haul out and store when towing, at 1/4 to 1/2 throttle pushed a 20 footer along fine even with some chop
 
M

Mike

My experience

John: I bought my Nissan 8 hp from Sailnet. Delivered right to my door, and about 20% less expensive than other internet dealers. No sales tax, and they waived the delivery charge too. One caveat: no dealer to tune it up before you take it home. No big deal as it was fine, and I had my guy tune it up before the next season. It is a 20 inch shaft model; you are correct in that they did not make it in the 25 inch size. I picked it for a couple of reasons, but mostly due to consideration for the Admiral: she wanted electric start and she wanted to make sure she could handle the weight. The Nissan 8 was the smallest (lightest) outboard I could find with electric start. I could have gone with a four stroke (having replaced my bracket the year before with one that is rated for a four), but the four cost about $500 more, and weighed about 40 lbs. more. The Admiral was concerned that in an emergency, she would not be able to wrestle with that extra weight. I have been delighted with the engine. Even though it is a two stroke, it is so much quieter than the 1981 9.9 Johnson it replaced. She starts on the first or second pull of the cord or the first or second push of the starter every time.
 
S

Stu Timm

9.9 and a bigger bracket

Happy New Year john: I replaced my 6 hp Johnson 20" with a 9.9 Merc long shaft 2 stroke. The motor weight went from 65 pounds to 85 pounds, and the stock mount that came with the O'Day 22 was not up to the task of carrying the weight. I replaced the old mount and the wedge-shaped block off the transom with a Garelik (sp?) heavy duty mount fastened DIRECTLY to the transom, not to the transom motor wedge-shaped block. I lowered the unit a bit on the stern to get the prop 12" below the waterline on calm days. The Garelik mount allows for mounting to reverse camber transoms like the O'Day has. I through-bolted it to a 12" by 12" by 3/4" piece of marine plywood on the inside, set in caulk/adhesive. Ideally, the plywood should be glassed in place, but my 6'-4" frame could not fit into that little space to do that. The only negatives are that the transom has a small bit of flex to it when motoring under load. I tightended the bolts more and have not seen any ill effects. The Merc has been so-so in reliability. I lost a month's of boating last season due to a pesky carburetor float clog. The Merc 9.9 provides plenty of reserve power and can easily get the boat to hull speed (around 5 knots). The boat powers well with her flat bottom and shallow draft. The prop only once caught air when in a heavy chop. The motor's angled down to point the thrust deeper into the water for full effect. Make sure you know what your invert height is on your existing mount and what engine weight it's rated for. Measure from the top of the mount in it's full lowered and locked position, to the actual (not painted) waterline of your boat. Your motor's cavitation plate should be a few inches below the water. If it's above the water, you'll be sucking air into your cooling intake which is not a good thing! You can add shims or cut down the mounting plate to fine tune the height of the motor for optimal performance. Good sailors say motors are not needed, but where I sail, the motor is used half the time as the wind's either foul or not there, or traffic constrains me to keep the boat under full control. Ever try sailing through a mooring field? Good luck - and enjoy your O'Day! regards, Stu "Karakahl" 1979 O'Day CB Centerport, NY
 

Norton

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Mar 30, 2004
93
Allied Seabreeze New Orleans
XLS

6hp is enough power, and a long shaft is long enough in most situations. I had to go forward during a squall and got blown around as much as 180 degrees due to the prop coming out of the water with a 8hp Nissan longshaft on an O23. XLS is best for safety, but I know Tohatsu/Nissan only makes them in 9.8 four stroke now. I don't know what else is available. The cost really adds up when you consider the additional cost of the motor (9.8 vs. 6, 4 stroke vs. 2) and a new bracket. I would like a two stroke 9.8 XLS as they were significantly lighter, and less expensive, but they were phased out last year. Anyone want to sell and go to four stroke?
 
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