motor mounts Mercruiser 3.7L

[dancewithme951]

I inherited a boat restoration project from a guy and, unfortunately, he didn't take pictures as he disassembled the hull. What I have now is a completely gutted hull so I have no way of knowing what the original motor mounting structure was to which the 1986 Mercruiser 3.7L 170HP front and rear motor mounts should be attached. And, HOW should they be attached...lag bolts, bolts & nuts?? Anyone out there with this sterndrive that can either explain or provide pictures so I can fabricate these?

 

[Bob_VT]

Re: motor mounts Mercruiser 3.7L

"normally" the mounts are lagged into the stringers and supports.

I will move this over to the restoration section........ You need to have properly installed stringers.

I HIGHLY recommend epoxy and good quality stuff for the stringers.

Take a look at the supplies available here http://www.iboats.com/Boat-Paint-Re...et-Epoxy/dm/view_id.11?cm_sp=Forum-_-Ref-_-BF

 

[dancewithme951]

Re: motor mounts Mercruiser 3.7L

Thanks Bob. Actually as part of the package I acquired a TON of his as yet unused materials...about 25 yards of fiberglass fabric, resin, and much more. And, he had removed ALL the old rotten stringers so in the engine area all that's there now is the v-shaped hull surface. And, he had already installed a few stringers - very nice job I must say - but just not in the engine area. I suppose I can just us the dimensional spec sheet I found for my motor and construct support members based on that.

Anyone else out there with pictures?

 

[Bondo]

Re: motor mounts Mercruiser 3.7L

Thanks Bob. Actually as part of the package I acquired a TON of his as yet unused materials...about 25 yards of fiberglass fabric, resin, and much more. And, he had removed ALL the old rotten stringers so in the engine area all that's there now is the v-shaped hull surface. And, he had already installed a few stringers - very nice job I must say - but just not in the engine area. I suppose I can just us the dimensional spec sheet I found for my motor and construct support members based on that.

Anyone else out there with pictures?

Ayuh,.... Generally speakin' the way it's done is to hang the motor off the rear motor mounts,...

Align it with an alignment bar, 'n build up the front mount to match that point,...

 

[dancewithme951]

Re: motor mounts Mercruiser 3.7L

Hey, thanks Bondo. I was thinking I needed to purchase an alignment bar. I also found this very cool dimensional PDF that I'll attach for anyone that might find it helpful.View attachment Mercruiser 470 dimensional drawing.pdf