Yanmar 3gmd Question - SailNet Community
 
LinkBack Thread Tools
post #1 of 5 Old 03-10-2008 Thread Starter
Senior Member
 
nk235's Avatar
 
Join Date: Apr 2007
Location: Long Island
Posts: 404
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
 
Yanmar 3gmd Question

I had a 25' boat with an outboard but just put a deposit down on a 32' boat with an inboard Yanmar 3GMD. I do not know really anything about inboard motors but I do know Yanmar is very popular and makes a good motor.

I plan on having the entire boat surveyed but one of my concerns is this motor. The owner was a former mechanic rebuilt it less than a year ago and according to what he gave me he did:

Engine (Yanmar 3GMD 20 HP): The Yanmar 3GMD was completely rebuilt in 2007 to include NEW- Starter, Motor Mounts, Valves, Valve Guides, Pistons, Rings and Rod Bearings. Racor Fuel Filters, Fuel Lines, Fuel Pump and Engine Raw Water Pump have also been replaced

He says it runs perfectly and it only has 20-30 hours on it since the rebuild but my concern is that I do not know this person where is if the work was done by a yard I would have a warranty on the motor. Besides dropping the boat into the water for a sea trial, is there any other tests a surveyor or mechanic can do to see if this was rebuilt properly? Do surveyors usually include this? Is the Yanmar a complicated motor that I should be concerned with the fact that it has been rebuilt? How much does it usually cost to have a Yanmar mechanic inspect the motor? Is it worth it to do this or is the Sea Trial enough?

The rest of the boat is in immaculate shape and the owner has been very forthcoming about everything else so I believe him when he says it runs well, but I am not about to buy a boat on that. I want proof for myself. Any suggestions?

Thanks in advance
nk235 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 5 Old 03-10-2008
Senior Member
 
timebandit's Avatar
 
Join Date: Sep 2002
Posts: 928
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 14
 
You can ask for parts receipts and check the dates.
timebandit is offline  
Quote Quick Reply Share with Facebook
post #3 of 5 Old 03-10-2008
Moderator
 
JohnRPollard's Avatar
 
Join Date: Mar 2007
Location: Chesapeake
Posts: 5,680
Thanks: 0
Thanked 4 Times in 3 Posts
Rep Power: 10
     
If you have serious concerns, it might be best (if only for peace of mind) to have a separate engine survey performed. This would be by a certified engine surveyor, not the guy/gal you've hired for the rest of the boat.

Personally, I would consider it a plus if the engine had been properly re-built. A bigger concern to me would be whether this particular engine is raw or fresh water cooled. You might also ask what precipitated the re-build?

Also, most 3GMs I'm familiar with had a higher HP rating (our 3GM30F for instance is 27hp peak, 24 hp continuous), but yours could just be an older version that I'm not familiar with.

Good luck to you!


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

Pacific Seacraft Crealock 31 #62

NEVER CALLS CRUISINGDAD BACK....CAN"T TAKE THE ACCENT
JohnRPollard is offline  
Quote Quick Reply Share with Facebook
post #4 of 5 Old 03-10-2008
Senior Member
 
timebandit's Avatar
 
Join Date: Sep 2002
Posts: 928
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 14
 
Check the log book.
timebandit is offline  
Quote Quick Reply Share with Facebook
post #5 of 5 Old 03-12-2008
Senior Member
 
billangiep's Avatar
 
Join Date: Dec 2003
Location: Florida Gulf Coast
Posts: 295
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 13
 
The 3GMD is raw water cooled unless a heat exchanger was added at a later date also I beleive the 20 HP rating is @3400 and the 22HP is @ 3600.
"QUICKLINKS"

ModelHPfromto
YSE8 & 1219741976
YSB8 & 1219761977
YSM8 & 1219771980
2QM202219751980
1GM7.519801983
3GMD, 3GMF22.519801983

3HMD, 3HMF 3019801983
billangiep 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
Need help YANMAR engine mount Giulietta Gear & Maintenance 20 04-15-2010 01:15 PM
Another Yanmar 3QM30 question hertfordnc Gear & Maintenance 1 10-17-2007 09:33 AM
Smoke on the Water - Yanmar Question DrB Gear & Maintenance 7 09-04-2007 05:31 PM
Yanmar - fuel injection pump question rperret Gear & Maintenance 7 05-24-2007 10:00 AM
Prop for Morgan OI w/ Yanmar 3GM30F cwarwick Gear & Maintenance 1 11-16-2004 01:17 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