SailNet Community

SailNet Community (http://www.sailnet.com/forums/)
-   Newport (http://www.sailnet.com/forums/newport/)
-   -   Loose engine mount studs (http://www.sailnet.com/forums/newport/72102-loose-engine-mount-studs.html)

Bateau25 02-16-2011 12:45 PM

Loose engine mount studs
 
I just posted this as a new Junior member.

I sail on the Hudson river in NY on a 1981 Newport 28 built by Capital Yacht powered by an inboard Universal 5411, which incidentally just died. I am now in the process of trying to pull it out for repair or replacement.

Already I have an issue which I hope someone could advise me on:
As I started to look at how to remove the motor from its mounts (flex mounts, 4 of them) I discovered all of the studs that attach the motor mounts to the fiberglass stringer would spin with their nuts as I loosened them. Any suggestions how I could take these out without damaging the studs or having to dig them out and damage the stringers in the process (and also save whatever skin I have on my knuckles!)? How were the studs installed in the first place? I will try to post pics the next time.

I should be grateful if anyone could share their knowledge or expertise on this...

Many thanks to all!

Maine Sail 02-16-2011 02:36 PM

Quote:

Originally Posted by Bateau25 (Post 698706)
I just posted this as a new Junior member.

I sail on the Hudson river in NY on a 1981 Newport 28 built by Capital Yacht powered by an inboard Universal 5411, which incidentally just died. I am now in the process of trying to pull it out for repair or replacement.

Already I have an issue which I hope someone could advise me on:
As I started to look at how to remove the motor from its mounts (flex mounts, 4 of them) I discovered all of the studs that attach the motor mounts to the fiberglass stringer would spin with their nuts as I loosened them. Any suggestions how I could take these out without damaging the studs or having to dig them out and damage the stringers in the process (and also save whatever skin I have on my knuckles!)? How were the studs installed in the first place? I will try to post pics the next time.

I should be grateful if anyone could share their knowledge or expertise on this...

Many thanks to all!

Do the mounts look like the two on the left?

http://www.pbase.com/mainecruising/image/131546011.jpg

Bateau25 02-16-2011 03:20 PM

Hi Main Sail,

Yes, they look exactly like the two on the left, rust and all! How were they attached to the stringers?

Many thanks
Bateau25

Maine Sail 02-16-2011 04:00 PM

Quote:

Originally Posted by Bateau25 (Post 698778)
Hi Main Sail,

Yes, they look exactly like the two on the left, rust and all! How were they attached to the stringers?

Many thanks
Bateau25

Are the two mounting studs into the stringer turning or is the single big engine bracket stud turning?

These Bushings Inc mounts often fail when the engine mounting stud breaks away from the rubber and spins.
http://www.pbase.com/mainecruising/image/131546015.jpg

Bateau25 02-16-2011 04:26 PM

Maine Sail:
Its the two mounting studs into the stringers that are spinning and can't remove them - all 4 pairs! Can I cut them off so the mounts could be lifted (along with the engine)? But then later on how do I attach the new engine mounts that comes with the replacement motor?
The single big engine bracket studs on each flex mount seem to be okay and sturdy as i can easily loosen or tighten the big nuts above and below the engine mounting brackets.
many thanks
Jimmy (Bateau25)

hellosailor 02-16-2011 06:35 PM

"Its the two mounting studs into the stringers that are spinning and can't remove them"
And the stringers are wood or wood encased in fiberglass?

It could be the wood is badly rotted out, in which case you'd want to rebuild the stringers. Basically, cut them out, lay in new 2x4's or whatever, glass them over.

It could also just be that the bolts worked loose or the wood rotted just locally around them. In either of those cases, you should be able to drill a couple of 1/4" or so holes, clean out the area as best you can, and pour in epoxy to embed the bolts good as new.

Rubber part makers in general say that all rubber parts--including engine mounts--should be replaced every 5 years, as the rubber stiffens or breaks down. So new engine mounts are called for in any case.

Fortunately you're already planning to pull the engine, making the engine mounts a much easier job. (Looking on the brightside.<G>)

Bateau25 02-16-2011 07:55 PM

Thanks HelloSailor.
That's what I suspected too - rotting wood underneath the fiberglass stringers. I will get a better look once the engine is pulled. If indeed the wood is rotted, then no choice but to rebuilt the stringers. The replacement motor has the same exact footprint. Its just that if the studs could be removed completely it would simplify engine removal by sliding the motor out on its mounts over the stringer onto the cabin floor using a come along.

Oh well, life is beautiful, but never simple!
Happy sailing to all!


All times are GMT -4. The time now is 07:10 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012