Yanmar 2GM or 2QM15...? - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 12-27-2006
Member
 
Join Date: Aug 2006
Location: Miami
Posts: 66
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
marinesniper is on a distinguished road
Yanmar 2GM or 2QM15...?

Hello,

I have been trying to learn everything about my engine in the hopes to be able to perform all the maint work on it myself.

Interesting:

I purchased the service manual for the 2GM and 2QM15 engine.

In the manual the pictures and the layout of the 2GM match my engine perfectly, but the engine marking clearly says it is a 2QM15. ???

The 2 engine designs are very different, I am positive that my engine design matched the schematics in the manual for the 2GM yet it is stamped on the side of the engine as an 2QM15...

Anyone have any input...it was built in 1977-1983 time frame...

thanks...
Reply With Quote Share with Facebook
  #2  
Old 12-27-2006
Senior Member
 
Join Date: Nov 2006
Location: Massachusetts
Posts: 376
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Goodnewsboy is on a distinguished road
If you have a 2GM, I would contact Torresen's and get the Yanmar factory manual (AOA1025). It is specific to the GM family (1GM, 2GM, 3GM and 3HM). The aftermarket manuals are inferior.

If you have any doubt about which engine you have, they can help.

They also have complete parts lists for these engines online.
http://www.marinedieseldirect.com/ca...rintoperators=

I have a 1982 2GM with a SenDure heat exchanger kit and it's a great engine if 13 HP is enough for you. We have it in a C&C 30 and it does a very fine job of getting her up to hull speed without straining. One thing that few seem to know is that it has dry cylinder sleeves, so you can simply replace them at overhaul time, avoiding the hassle of boring and selecting oversize pistons.

Last edited by Goodnewsboy; 12-28-2006 at 12:03 AM.
Reply With Quote Share with Facebook
  #3  
Old 01-02-2007
Member
 
Join Date: Aug 2006
Location: Miami
Posts: 66
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
marinesniper is on a distinguished road
well the mech confirmed it is an Yanmar 2GM but labled as and 2QM15 and he does not know why...

My starting problems are due to a faulty Fuel lifter...! ordered and on its way...!
Reply With Quote Share with Facebook
  #4  
Old 01-03-2007
Senior Member
 
Join Date: Nov 2006
Location: Massachusetts
Posts: 376
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Goodnewsboy is on a distinguished road
The 2GM is a wonderful little engine. Better than the later model 2GM20 in my opinion.

You should still get the Yanmar service manual.
Reply With Quote Share with Facebook
  #5  
Old 01-05-2007
Member
 
Join Date: Aug 2006
Location: Miami
Posts: 66
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
marinesniper is on a distinguished road
Update,

The Solec manual appears wrong. This is what the Yanmar service guy tells me. My engine is a 2QM15 but the picture in the Solec manual does not match the design.

So far we have found a siezed water pump (replaced), Bad Fuel lifter (replaced), and finally (hopefully the last) the injector pump is only feeding fuel to on of the injectors. THe mech says it needs to be recalibrated...

Total cost so far:

Fuel lifter = $200.00
Water pump = $ 80.00
Labor @65/ 7 hours = $455.00

The key thing is I watched everything he did and learned how to diagnose this type of problem in case of future re-occurance.

Hopefully after today I will be on my way to Key Largo...(10 hr run from Miami)
Reply With Quote Share with Facebook
  #6  
Old 01-05-2007
Senior Member
 
Join Date: Nov 2006
Location: Massachusetts
Posts: 376
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Goodnewsboy is on a distinguished road
The pump is adjusted by shims if it is anything like the 2GM.

It is actuated by a camshaft and the shims vary the injection timing by moving the pump body, and hence the follower closer to, or farther away, from the cam.

This thread shows one reason why the Yanmar service manual is worth the money.

Last edited by Goodnewsboy; 01-05-2007 at 07:18 PM.
Reply With Quote Share with Facebook
  #7  
Old 10-21-2008
Junior Member
 
Join Date: Feb 2008
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
ariel7x is on a distinguished road
If the shifter is on the port side its a gm, on the stbd its a qm
Reply With Quote Share with Facebook
  #8  
Old 10-21-2008
NOLAsailing's Avatar
Senior Member
 
Join Date: Sep 2006
Location: Mandeville, LA
Posts: 504
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
NOLAsailing is on a distinguished road
This is a 2QM15:





These are the service and operations manuals:

Service Manual (13.5 MB, big download): http://www.rambunctiousracing.com/fi...m15service.pdf

Operations Manuals: http://www.rambunctiousracing.com/files/2qm15.pdf
__________________
-Jason

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #9  
Old 10-21-2008
tommays's Avatar
Senior Member
 
Join Date: Sep 2008
Posts: 4,254
Thanks: 1
Thanked 26 Times in 26 Posts
Rep Power: 7
tommays will become famous soon enough

The only good place to use and aftermarket manual
__________________
1970 Cal 29 Sea Fever

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

1981 J24 Tangent 2930
Tommays
Northport NY


If a dirty bottom slows you down what do you think it does to your boat
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #10  
Old 10-21-2008
NOLAsailing's Avatar
Senior Member
 
Join Date: Sep 2006
Location: Mandeville, LA
Posts: 504
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
NOLAsailing is on a distinguished road
In response to Tommay's post, note that the manuals I linked to above are not aftermarket. Just clarifying.
__________________
-Jason

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need Yanmar 2QM15 Part wittetoo S2 2 12-07-2011 02:39 PM
Yanmar 2GM zfactor Boat Review and Purchase Forum 5 06-08-2009 10:00 AM
Yanmar 2QM15 Bleeding Fuel System - HELP shipley Gear & Maintenance 5 03-11-2002 07:21 PM
Yanmar 2QM15 rpowell Gear & Maintenance 3 01-10-2002 08:26 PM
Yanmar 2QM15 Problem shipley Gear & Maintenance 5 05-18-2001 09:17 PM


All times are GMT -4. The time now is 12:26 PM.

Add to My Yahoo!         
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

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.