Stern Drive SeaCAST Transom Rebuilding Advice needed

rocketboy52

Cadet
Joined
Mar 21, 2006
Messages
26
I have a Winner Viscount with a Mercruiser 888 Pre alpha stern drive with a 302 ford motor. I have been working on overhauling this cool boat, and a bad water leak caused me to haul out the motor. Once I hauled out the motor, I found that my Y pipe was cracked and my transom plate was snapped in two.

Merc004.jpg


Everyone that responded in a previous posting told me I needed to check the transom, so I drilled a few holes and found that my transom in certain areas is indeed dark like coffee grounds color, even though the transom looks, sounds, and feels solid.

I’m looking at rebuilding the transom with seaCast, but in this boat, I’m not sure how far I should go to replace “all wood”. The transom wood is not Sandwiched, meaning it doesn’t have an inner glass skin, but rather is Glass – Wood – Paint from the outside in. If you look at the attached pictures the Green area is the thickest part of the transom, and actually has a second ply of wood laminated in this area to get the needed thickness for the stern drive unit (2” thick) I drilled multiple test holes to see where the wood was dark and the only areas that were dark were holes n the Green area (holes A, B, and C) The holes I drilled at D, E and F looked like clean new wood. My question is should I just replace the thickest part of the transom (green highlight) with a SeaCAST transom, or do I need to cut into the sealed bunks and rip out all wood (Red out line) to do this project right?

Transom.JPG


I want to fix this prject right, but I also don’t want to go overboard wasting time and money if it is over kill. Those who have replaced transoms before what are your opinions? What would you do? How do you prevent transom rot in new boats? Thanks in advance.
 

sker crunch

Petty Officer 3rd Class
Joined
Jun 15, 2006
Messages
86
Re: Stern Drive SeaCAST Transom Rebuilding Advice needed

Look in the boat restoration area of the board. They have lost of info and experts over there.
 
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