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 Catalina/Capri 25/250 Sailor's Forums
 Catalina 25 Specific Forum
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wade
Deckhand

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Canada
17 Posts
Initially Posted - 06/07/2004 :  09:12:05  Show Profile
I have an 83 sk and at present have a 88 johnson 9.9 2 stroke. I would like to replace it with a 96 9.9 honda four stroke. My question is can the original bracket support the weight and would I need a backing plate if the plate can support the weight. Thanks, Wade
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ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 06/07/2004 :  10:07:23  Show Profile
"can the original bracket support the weight"

If you have the original Garhauer (tubular stainless) bracket, it will support the weight, but the lift springs won't provide enough assist to easily raise the motor... (unless you are young and strong).

The newer Garhauer mounts have extra spring power, but are still provide marginal lift assist with the new 100 lb plus outboards. Some folks are going with the heavy duty offshore mount from Garelick to get the extra whoopie.

"...I need a backing plate if the..."

Assume you're talking about adding backing plates inside the hull to help distribute the load ?
Great idea. Some of us (self included) have also added extra material on the outside of the hull to further stiffen the transom and distribute the weight.

There's a lot of material on this in previous threads. One of the 'hot topics' on this board.
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wade
Deckhand

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Canada
17 Posts
Response Posted - 06/07/2004 :  11:59:16  Show Profile
Thanks for the info. What did you use for the backing plates.
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jwilliams
Captain

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USA
357 Posts
Response Posted - 06/07/2004 :  13:10:37  Show Profile
Hi Wade,

For the inside backing I used 7/8 in plywood. Make the largest size that will permit you to wiggle it into place. You can use a piece of cardboard to experiment with and trim so you get the right size. I painted the plywood white. Use large SS fender washers. Of course, you will have to install long bolts. I used SS/Nylon locking nuts.

To help lift these 4S you can install helper springs like in the Tech Tips section. Hey Jude has a 4S Evinrude 9.9. It weighs about 115.

If you choose to use the original bracket, you can buy rebuild components from Garhauer. My bushings were shot. I also had fabbed and installed thicker locking handle components.

Jim Williams
Hey Jude C25fk 2958
SF Bay
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 06/07/2004 :  19:16:32  Show Profile  Visit Leon Sisson's Homepage
Wade,

Here's a [[url="http://www.catalina25-250.org/forum/topic.asp?TOPIC_ID=4372"]link[/url]] to a previous thread which included discussion of reinforcing the C-25 transom around the motor mount.

-- Leon Sisson
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 06/07/2004 :  21:37:03  Show Profile  Visit Frank Hopper's Homepage
I used Starboard inside and out.
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 06/07/2004 :  22:04:48  Show Profile
I also used Starboard inside and out. My outer board follows the curve of the hull and extends further down than Frank's--the theory being that the weight and forward thrust are pulling out on the top and pushing in on the bottom.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.