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Old 21-05-2013, 13:02   #1
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2 stroke vs 4 stroke motor mount. WTH! Is there a difference

Just wondering, I see no difference in the actual mount and wonder. Could I get opinion (come on, there are lots of opinions on here;-) on whether or not the 2 stroke ob mount would be fine for a 6 hp 4 stroke. Could be something I'm overlooking so I figured I would ask those more knowledgeable. Thanks for reading this and clicking the links!

The 2stroke one has a higher vertical lift than the 4


On defender website
This one is for a 2 stroke
Garelick Stainless Steel Auxiliary Motor Bracket For 2-Stroke Motors

and this one is special for a 4 stroke
Garelick Aluminum Auxiliary Motor Bracket For 4-Stroke Motors

I have one like this, but dislike it and want one that is" BEEFIER"
Garelick Aluminum Auxiliary Motor Bracket For 2-Stroke Motors
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Old 21-05-2013, 13:14   #2
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Re: 2 stroke vs 4 stroke motor mount. WTH! Is there a difference

Maybe an expert will respond here but I would say that a four stroke mount would have to be considerably beefier because of the weight issue. That would mean the spring action to raise the engine would require more tension as well. The thrust should be the same for each.

If the weight rating for your outboard bracket covers the weight of your engine I don't see a problem.

Again, I'm not an expert.

kind regards,
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Old 21-05-2013, 13:26   #3
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Re: 2 stroke vs 4 stroke motor mount. WTH! Is there a difference

The SS 2-Stroke kicker bracket will handle your 6 HP four stroke without issue, but I would recommend the 71090 if you have the extra money to spend.

My outboard was upgraded to a 9.9hp with electric start and charging coil a few years back and I have it mounted on the old SS 2-Stroke bracket. It works fine and I've had no issues with the bracket, but it is at the limits. I am planning to upgrade to the 71090 when money allows.
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Old 21-05-2013, 13:27   #4
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Re: 2 stroke vs 4 stroke motor mount. WTH! Is there a difference

I'm with John. The weight is typically why there is a difference.

The 2 stoke mount you posted is for up to 118 lbs while the 4 stroke is for up to 169 lbs. The one you said was like the one you have is for up to 59 lbs.

I would also caution about going with a mount with too much capacity. Then you will have to push down hard to get the motor down. Plus it could fly up at you too fast. You should get the one sized to your engine based on weight, not necessarily horse power.
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Old 21-05-2013, 13:53   #5
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Re: 2 stroke vs 4 stroke motor mount. WTH! Is there a difference

Quote:
Originally Posted by JK n Smitty View Post
I'm with John. The weight is typically why there is a difference.

The 2 stoke mount you posted is for up to 118 lbs while the 4 stroke is for up to 169 lbs. The one you said was like the one you have is for up to 59 lbs.

I would also caution about going with a mount with too much capacity. Then you will have to push down hard to get the motor down. Plus it could fly up at you too fast. You should get the one sized to your engine based on weight, not necessarily horse power.
The one for 59 pounds is the one I have now that I dislike.

I had not thought about the ability to get the motor down!!!!! That is why I posted.

This thread has pretty much confirmed what I had thought, it goes mainly by weight. I want to stay under the max weight...obviously.

I had not considered reason why I would not want one rated for a say, 250 pound motor!

Logic once again prevails.
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Old 21-05-2013, 13:53   #6
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Re: 2 stroke vs 4 stroke motor mount. WTH! Is there a difference

BTW. Thanks for taking the time to answer my question(s)
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Old 21-05-2013, 14:00   #7
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Re: 2 stroke vs 4 stroke motor mount. WTH! Is there a difference

Quote:
Originally Posted by boatsail View Post
BTW. Thanks for taking the time to answer my question(s)
Boatsail - we have the same boat.

Make sure to cut a strong backing plate for inside the transom to provide some rigidity and extra strength. I'm going to add a plate on the outside of the transom as well. Lastly, I have a couple pieces of PVC glassed in across the transom vertically on the inside to prevent the transom from flexing under thrust - I'm not sure if this is necessary, but it can't hurt.
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Old 21-05-2013, 14:20   #8
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Re: 2 stroke vs 4 stroke motor mount. WTH! Is there a difference

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Originally Posted by kta View Post
Boatsail - we have the same boat.

Make sure to cut a strong backing plate for inside the transom to provide some rigidity and extra strength. I'm going to add a plate on the outside of the transom as well. Lastly, I have a couple pieces of PVC glassed in across the transom vertically on the inside to prevent the transom from flexing under thrust - I'm not sure if this is necessary, but it can't hurt.

kta,

I typed up a really nice reply and the computer did not publish. Lost connection. Here it is again.

2-27. Love the boat.

Imagine starboard cut into a cross and bolted onto the transom. That was my reinforcement from the po. Hull Flexed. I did not like. I have glassed in the same type of cross onto the interior of the transom and bonded it to the hull. Totally glassed in. Also, I took out the cockpit scuppers and glassed in pvc so that it drains really fast and won't clog those crappy little hoses up. Looks really nice, can't wait to see it painted up.
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