engine mounts, bewildering choices! - SailNet Community
 
LinkBack Thread Tools
post #1 of 9 Old 11-04-2009 Thread Starter
me at 67!
 
deniseO30's Avatar
 
Join Date: Nov 2006
Location: Bristol pa
Posts: 6,970
Thanks: 55
Thanked 126 Times in 115 Posts
Rep Power: 10
   
engine mounts, bewildering choices!

time to replace em! go2 marine seems to have a great selection! Marine Engine Mounts The choices are bewildering non the less. Most don't look much different then what we call "vibration isolators" in the HVAC trade. My boat has Universal 5416 and the weight is around 350 lbs. on 3 mounts. front is under the crankshaft damper/pulley of course the backs are port and starbrd. advice? hight $ is not always the best imho. thanks all!

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

My last project!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


My boat is sold!
deniseO30 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 9 Old 11-10-2009
Senior Member
 
Shortman's Avatar
 
Join Date: Feb 2006
Location: Western MA & Maine
Posts: 168
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
 
Important consideration

is to maintain alignment w/shaft. Different mounts than what you currently have could change the angle relative to shaft & cutlass bearing. Just something to remember. Engine mounts play into engine performance & relationship w/shaft in a multitude of ways. I got an inkling of this when I had mine replaced last winter.
Shortman is offline  
Quote Quick Reply Share with Facebook
post #3 of 9 Old 11-10-2009
Member
 
osirissail's Avatar
 
Join Date: Oct 2009
Location: Caribbean
Posts: 76
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
 
Engine mounts come in two basic categories: hard mounts and soft mounts. Check with your engine manufacturer to see which is preferred for your engine.
- - What a lot of people do not realize is that the propeller does Not push your boat through the water. The propeller pushes the Engine via the prop shaft and transmission bearings. Then the Engine pushes on the engine mounts which push the boat.
- - If you are supposed to use hard mounts, which are the normal preferred type of mounts, and switch to soft mounts the engine will move forward and aft as you shift gears. This may cause the propeller shaft to travel too far in one direction or the other and the propeller will rub against parts it is not supposed to rub against. It is very important to replace your mounts with the correct style/hardness that the boat and engine manufacturer originally installed.
- - If the old mounts are worn you will notice too much fore and aft movement of the engine when operating in forward or reverse. Also worn mounts can allow the engine to jump or fall out of place during a knockdown or roll over. That would be severely destructive to the boat and really ruin your day.
- - Engine mounts - besides "hard" or "soft" also come in models that "capture" the internal mounting stud and will not allow the mounting stud to leave the mount in case of a roll-over. Other mounts are designed for land based installations where possible upside down or 90* off vertical operations are not possible.

Last edited by osirissail; 11-10-2009 at 08:24 AM.
osirissail is offline  
Quote Quick Reply Share with Facebook
post #4 of 9 Old 11-11-2009
Senior Member
 
timebandit's Avatar
 
Join Date: Sep 2002
Posts: 928
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 13
 
Might wanna read this---
yanmar motor mount replacement idea

Rick
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Mac 25
Copernicus
Southern California
I am not a prejudice racist sexist bigot. I just hate stupid people.
timebandit is offline  
Quote Quick Reply Share with Facebook
post #5 of 9 Old 11-11-2009
Member
 
osirissail's Avatar
 
Join Date: Oct 2009
Location: Caribbean
Posts: 76
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
 
Very good link to an old post. One factor that may or may not apply is whether your boat is insured or not. Building your own engine mounts on an insured boat guarantees that you will not get a nickel out of the insurance company should damage occur to the boat due to those home-made engine mounts. If you get involved in a collision with anything - another boat or a dock - as a result of the home-made mounts failing you would really be in deep do-do. Buying the proper engine mounts even if costing twice the material costs is much smarter and might save you mega thousands of dollars down the road.
osirissail is offline  
Quote Quick Reply Share with Facebook
post #6 of 9 Old 11-12-2009 Thread Starter
me at 67!
 
deniseO30's Avatar
 
Join Date: Nov 2006
Location: Bristol pa
Posts: 6,970
Thanks: 55
Thanked 126 Times in 115 Posts
Rep Power: 10
   
and..... ? No, not making my own.. yes, I know about alignment issues... No I haven't bought any yet.. And No, no one has suggested which ones to use. So I guess I'l going to go with the ones listed for my engine on Torrensons site.

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

My last project!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


My boat is sold!
deniseO30 is offline  
Quote Quick Reply Share with Facebook
post #7 of 9 Old 11-12-2009
Senior Member
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,888
Thanks: 20
Thanked 222 Times in 169 Posts
Rep Power: 16
       
Quote:
Originally Posted by deniseO30 View Post
and..... ? No, not making my own.. yes, I know about alignment issues... No I haven't bought any yet.. And No, no one has suggested which ones to use. So I guess I'l going to go with the ones listed for my engine on Torrensons site.
Denise,

My .02, having done both aftermarket and factory, is to stay factory. Too many variables with aftermarkets like hole centers, the wrong damping for the motor, height considerations etc. etc. on and on...

______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




Images In Posts Property of Compass Marine Inc.


Maine Sail is offline  
Quote Quick Reply Share with Facebook
post #8 of 9 Old 11-12-2009 Thread Starter
me at 67!
 
deniseO30's Avatar
 
Join Date: Nov 2006
Location: Bristol pa
Posts: 6,970
Thanks: 55
Thanked 126 Times in 115 Posts
Rep Power: 10
   
thanks MS at least we know what I thinking!

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

My last project!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


My boat is sold!
deniseO30 is offline  
Quote Quick Reply Share with Facebook
post #9 of 9 Old 11-13-2009
Senior Member
 
timebandit's Avatar
 
Join Date: Sep 2002
Posts: 928
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 13
 
I sayif you are happy with the longivity and performance of the stock ones then go with the original.

Rick
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Mac 25
Copernicus
Southern California
I am not a prejudice racist sexist bigot. I just hate stupid people.
timebandit is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Runaway Diesel Engine Ben Hilke Gear and Maintenance Articles 0 07-19-2004 08:00 PM
Caring for the Cruising Outboard Doreen Gounard Gear and Maintenance Articles 0 04-22-2003 08:00 PM
Surveying a Diesel Engine Tom Wood Buying a Boat Articles 0 01-26-2003 07:00 PM
Surveying a Diesel Engine Tom Wood Gear and Maintenance Articles 0 01-26-2003 07:00 PM
Replacing the Diesel Engine Sue & Larry Gear and Maintenance Articles 0 06-12-2000 08:00 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome