206 lb. 40 hp. motor

About inboard or outboard motors.

Moderator: Bill Edmundson

Post Reply
Sammy
Posts: 9
Joined: Sat Oct 27, 2018 12:38 pm

206 lb. 40 hp. motor

Post by Sammy » Sat Nov 03, 2018 11:20 am

I'm considering the purchase a Zip that has never been in the water. It has an unused 206lb. 40hp. motor. I'm concerned that the motor may be heavier and more powerful than the boat is designed for. The seller is not the builder and it is obvious he doesn't know anything about the boat's construction. When the Zip was designed, 40 hp. motors were lighter than modern 4 strokes.

gdcarpenter
Posts: 1377
Joined: Tue May 05, 2009 12:18 pm
Location: Raleigh, North Carolina

Re: 206 lb. 40 hp. motor

Post by gdcarpenter » Sat Nov 03, 2018 2:54 pm

For what it"s worth.
My ZIP had a 1959 Mercury Mark35A with 35 HP that was rated at 35 HP. It spec'd out at 135 lb.

Others will likely chime in that used more HP and heavier engines.

As my old engine was rated at C/S HP and NOT Prop HP like newer engines it was probably equivalent to a newer 30-32 HP.
It ran me at 30 MPH.

If anything you could possible shift auxiliary weight forward, i.e. Battery/Fuel Tank.

Offhand I suspect you would be okay.
This is my first, last and only boat build.

http://www.gdzipbuild.blogspot.com

User avatar
vupilot
Posts: 3476
Joined: Wed Apr 15, 2009 7:36 am
Location: Indy
Contact:

Re: 206 lb. 40 hp. motor

Post by vupilot » Sat Nov 03, 2018 3:02 pm

Its maybe 60lbs on the heavier side than the 40 hp motors the boat was designed for back in the day. I wouldnt be too concerned about it on the water but where it would concern me is when trailering down the road hitting bumps in the road. Motors of that size and weight have been used several times before. Take some precaution when trailering like using a transom saver and if built well it should be alright but you are wise being aware of it and cautious.

Sammy
Posts: 9
Joined: Sat Oct 27, 2018 12:38 pm

Re: 206 lb. 40 hp. motor

Post by Sammy » Fri Nov 16, 2018 7:48 pm

A belated thanks for your thoughtful responses.

User avatar
vupilot
Posts: 3476
Joined: Wed Apr 15, 2009 7:36 am
Location: Indy
Contact:

Re: 206 lb. 40 hp. motor

Post by vupilot » Sun Nov 18, 2018 12:19 pm

These days you can lose 30lbs by going with a super light weight lithium battery instead of a heavy lead-acid and also put the fuel tank up front under the bow so the total weight and weight distribution shouldnt be much difference.

Post Reply

Return to “Boat Power”