Motor transplant, is my home-made transom strong enough?

[hanslanda]

Hey guys, I'm doing a full restore on a 17ft glastron sse170. I've had to rebuild the transom and was wondering if yall felt it was fit for the new motor I planned putting in.

I built this transom(2x3/4") for a newer motor I planned on putting onto the boat, the original was a V4 Evinrude 88, but I acquired a V6 150 Evinrude (boat tag specified a max engine size of 155). Do you think a transom of this size will have any issues handling a motor that's essentially 80-100lbs heavier? Transom specifications seem to be a bit of voodoo magic online, with varying specs and statements. I'm essentially going from a V4 to a V6 but the power is within the tag specification.

 

[racerone]

In my opinion it is easy to add another piece of 3/4 plywood now.-----Much easier than doing it next year.----There will be no issues in bolting that 155 HP motor to a hefty transom.

 

[Scott Danforth]

if you are still within the capacity tag with HP, just rebuild it to what was there

 

[Buckischloo]

Have seen some folks adding knee braces to transom for big motors. Especially in old Checkmates and Bajas. Google "transom knee brace" for pics.

 

[sopwithcamel74]

You mention having already rebuilt the transom, right? How close are you to the original specs?

 

[KJM]

Is there fiberglass between the two sheets of plywood? You can add more FG to the inside if you are worried. Also the floor will help brace the transom.