How can I find out if my current motor bracket which holds a 9.9 Evenrude Yachttwin 2 stroke is capable of handling an upgrade to a Honda 9.9 weighing 116ibs. Is there a weight limit number stamped on the bracket and if so where would it be located?
Outboard Motor Mount Bracket
- Thread starter twodzusfittings
- Start date
- Status
If it helps any - The 2 cycle outboard engine weighs 60 lb and the 9.9 weighs 118Lb. I did not replace mine and I almost lost the engine as the bracket broke. Replace it and be safe and worry free. The one I replaced it with could hold up to 175lb of engine weight.
Joe, did the holes through the transom line up with the new or did you have to seal up the old and drill new? Did you reinforce both sides with backing plates? Which brand did you buy?
Joe;
The old style outboard motor brackets were designed for a two stroke engine which was lighter. In the early 90's, EPA mandated new emmissions which is one reason why nearly everyone went with the four stroke engines which are heavier implemented by late 1996. I would strongly suggest that you bite the bullet and purchase a new bracket that is deisigned to carry the wieght of a four stroke. Also, use backing plates inside that will distribute the load as most transoms are not as beefed up as power boat transoms.
crazy dave condon
The old style outboard motor brackets were designed for a two stroke engine which was lighter. In the early 90's, EPA mandated new emmissions which is one reason why nearly everyone went with the four stroke engines which are heavier implemented by late 1996. I would strongly suggest that you bite the bullet and purchase a new bracket that is deisigned to carry the wieght of a four stroke. Also, use backing plates inside that will distribute the load as most transoms are not as beefed up as power boat transoms.
crazy dave condon
WOuld an exterior plate along with an interior backing plate be advisable to sandwhich the transom?
Is there anyone out there that has a Garelick 4 stroke motor mount on their boat who could give me the measurements of the bolt pattern both horizontal and vertical?
I don't think you need to worry about sandwiching the transom with backing plates. Some good beefy ones inside will do the trick and will be less you have to worry about rusting.
I doubt your bolt holes will match up (mine didn't when I replaced my bracket) But it's a pretty simple fix to plug the wholes. You could just use a good marine caulking like 5200 and fill the holes and be fine. Try to do it from the inside and tape shut the outside of the hole before you do it.
I doubt your bolt holes will match up (mine didn't when I replaced my bracket) But it's a pretty simple fix to plug the wholes. You could just use a good marine caulking like 5200 and fill the holes and be fine. Try to do it from the inside and tape shut the outside of the hole before you do it.
Thanks for your input. I was in touch with Garelick. They provided me with white pages showing exact bolt hole patterns and as you said they will not match up.
Quick question for this thread - while this concerns a new motor mount for a Hunter 25.5 - would the same thing hold true (the need for a new motor mount) for a 1999 Hunter 260? If so - where does one purchase such a mount?
If I understand your question tgrass462, yes. The motor mount itself needs to be exchanged for one designed to take more weight. Most of the big marine suppliers carry various brands. It seems to me that Garelick is one of the more popular among the selections available. One thing I have been advised about off line from some of our forum listers, is that placement is important so as not to interfere with the rudder. Think it all through before drilling holes.
Thanks Bob.
Crazy Dave - since you're the expert on all things 'H-260' what is your opinion? Could the stock motor mount on a 1999 H-260 hold a 4 cycle Honda 9.9? (For the record - I've seen one or two H-26's and H-260's with 15 HP motors mounted ... but they could just be very lucky.)
Tom Grass
Crazy Dave - since you're the expert on all things 'H-260' what is your opinion? Could the stock motor mount on a 1999 H-260 hold a 4 cycle Honda 9.9? (For the record - I've seen one or two H-26's and H-260's with 15 HP motors mounted ... but they could just be very lucky.)
Tom Grass
Dave's Reply ...
I've answered my own question - below is a previous reply from Crazy Dave on the same subject from another thread. I think I'm OK with my motor mount on my H-260 holding a 9.9 4 cycle as long as the bolts are tight and I support the motor during trailering.
Thanks Dave!
Tom Grass
ShareThis
11-21-2012, 12:37 pm #13 (permalink) Crazy Dave Condon
-na -NA
Anywhere USA
Joined: Jun 2004
Posts: 917
Re: New Outboard
Top
Generally the brackets could handle the engines but only a few got out using a thinner steel plate which was corrected. It is that I am referring to.
However, I found when bolts were not kept tightened on a regular basis where the plate is bolted and also to the transom could cause issues later. But one major issue iis not supprotring the engine with an additonal tie up to the boat during transport as the engine bounces causing strain on the outboard motor bracket. With the additional tie up, that is eliminated. "
I've answered my own question - below is a previous reply from Crazy Dave on the same subject from another thread. I think I'm OK with my motor mount on my H-260 holding a 9.9 4 cycle as long as the bolts are tight and I support the motor during trailering.
Thanks Dave!
Tom Grass
ShareThis
-na -NA
Anywhere USA
Joined: Jun 2004
Posts: 917
Re: New Outboard
TopGenerally the brackets could handle the engines but only a few got out using a thinner steel plate which was corrected. It is that I am referring to.
However, I found when bolts were not kept tightened on a regular basis where the plate is bolted and also to the transom could cause issues later. But one major issue iis not supprotring the engine with an additonal tie up to the boat during transport as the engine bounces causing strain on the outboard motor bracket. With the additional tie up, that is eliminated. "
If the steel brackets are tight and you have the delrin or plastic bracket, that should be fine for a 9.9 four stroke but keep it eye on it. For those who think a higher rpm motor on the back is a must or will improve performance, then I hate to tell you it does not as the bow of the boat will start to rise up and you are plowing thru the water thus loosing speed. In fact, most transoms are designed for no more than a 10 hp on sailboats using outboards as many of you fail to forget this is a displacement hull which can only go so fast. Therefore, anything higher than a 10 hp on the backend of most sailboats are not suggested and before you do, I would on the newer boats ask the mfg what they think particularly on the new sailboats as it might void any warranty.
Crazy dave condon
Crazy dave condon
Question: If with all bolts tightened, a Garelick 2 stroke motor mount system with a weight limit of 115 pounds is currently in place, is it wise to put a 4 stroke motor weighing 110 pounds on it or should a motor mount with a much higher weight spec be used? What would a good variance be?
What affects the hunter outboard brackets are primarily two things. When overpowering and starting to plow, most will not back off the horsepower which puts a strain. However, the big one I found is when the motor is bouncing up and down on it in a sense when left on that ob bracket for an extended time in a tilted position to alos include trailering the boat. I found that tying the motor with an extra line up to something on the back of the transom helped tremendously to alleviate that problem from loosening bolts and cracking.
crazy dave
crazy dave
Tom G,
I've had a 4 stroke, 9.9 hp on my '99 H260 since purchase in '99. No problems at all on water or trailer.
Tom W
I've had a 4 stroke, 9.9 hp on my '99 H260 since purchase in '99. No problems at all on water or trailer.
Tom W
One other thing. I did install 9.9 four stroke motors on the Hunter 260 often when I was a dealer and all my customers pretty much followed my advice about tying up particularly when transporting.
As for removing the supplied Hunter outboard motor bracket in order to install a new bracket, I will defer from responding as I do not know how it was put on. I have seen some with no stainless steel but with regular steel bolts, no caulking, no additional support on the backside or interiour of the transom to distubute the weight and so forth, no lock nuts/locking washers and so forth. This is about all I am going to say on this thread.
crazy dave condon
As for removing the supplied Hunter outboard motor bracket in order to install a new bracket, I will defer from responding as I do not know how it was put on. I have seen some with no stainless steel but with regular steel bolts, no caulking, no additional support on the backside or interiour of the transom to distubute the weight and so forth, no lock nuts/locking washers and so forth. This is about all I am going to say on this thread.
crazy dave condon
- Status