Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 18-08-2012, 08:29   #1
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
anyone know valve clearances for 2qm20?

can anyone tell me valve clearances for cold set on yanmar 2qm20?
__________________

__________________
charliehows is offline   Reply With Quote
Old 18-08-2012, 13:54   #2
Registered User

Join Date: Jul 2012
Location: Auckland New Zealand
Boat: Farr 1020
Posts: 101
Re: anyone know valve clearances for 2qm20?

Set to 0.2mm to 0.25mm max cold using feeler gauge.

Acushla
__________________

__________________
Acushla is offline   Reply With Quote
Old 04-03-2013, 13:43   #3
Registered User

Join Date: Mar 2013
Posts: 9
Re: anyone know valve clearances for 2qm20?

The service manual writes 0.15mm for both intake and exhaust valves.
Michael
__________________
mjhansen is offline   Reply With Quote
Old 04-03-2013, 16:57   #4
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: anyone know valve clearances for 2qm20?

hmmm...
__________________
charliehows is offline   Reply With Quote
Old 04-03-2013, 17:59   #5
Registered User
 
Dsanduril's Avatar

Join Date: Aug 2011
Location: South Pacific
Boat: Outremer 50S
Posts: 1,451
Re: anyone know valve clearances for 2qm20?

My read of the service manual is 0.15mm.

Click image for larger version

Name:	2qm20valve.PNG
Views:	160
Size:	7.0 KB
ID:	56189
__________________
Dsanduril is offline   Reply With Quote
Old 05-03-2013, 15:43   #6
Registered User

Join Date: Feb 2013
Posts: 51
Re: anyone know valve clearances for 2qm20?

Your post heading says "QM" and your text says "GM." The valve clearance is different for each. Please make certain which motor you intend to adjust.

Charles
__________________
Nor'Sea 27 is offline   Reply With Quote
Old 08-03-2013, 17:01   #7
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: anyone know valve clearances for 2qm20?

raw water cooled 1979 2QM20.
__________________
charliehows is offline   Reply With Quote
Old 12-03-2013, 23:19   #8
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: anyone know valve clearances for 2qm20?

thanks acushla - i'll take a fellow kiwis word over a couple of quotes from some manual and someone who cant read
__________________
charliehows is offline   Reply With Quote
Old 13-03-2013, 01:14   #9
Registered User
 
Albro359's Avatar

Join Date: Jun 2009
Location: Elyse is in Fiji
Boat: Amel Super Maramu 2000
Posts: 510
Re: anyone know valve clearances for 2qm20?

Seriously ?....the manual for the 2QM20 says 0.15
I have a 3QM30 and its the same...0.15
If you set them bigger than that the motor is likely to be noisy at best and not run efficiently at worst
Why wouldn't you believe the manual ?
__________________
See you out there ....... Alan S.V. Elyse
now http://svelyse.weebly.com
older http://voyagesofDIVA.weebly.com
Albro359 is offline   Reply With Quote
Old 13-03-2013, 03:52   #10
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: anyone know valve clearances for 2qm20?

i might believe the manual if i saw the manual. i'm guessing the difference has something to do with cold set. i did read acushla's bio.
__________________
charliehows is offline   Reply With Quote
Old 13-03-2013, 07:21   #11
Registered User
 
Albro359's Avatar

Join Date: Jun 2009
Location: Elyse is in Fiji
Boat: Amel Super Maramu 2000
Posts: 510
Re: anyone know valve clearances for 2qm20?

I have the manual
P2-16 says 0.15 and it is cold set...

The manual is nearly 20Mb in pdf form...I could put it in my drop box for you to download if you need it.
__________________
See you out there ....... Alan S.V. Elyse
now http://svelyse.weebly.com
older http://voyagesofDIVA.weebly.com
Albro359 is offline   Reply With Quote
Old 13-03-2013, 07:39   #12
Registered User
 
Albro359's Avatar

Join Date: Jun 2009
Location: Elyse is in Fiji
Boat: Amel Super Maramu 2000
Posts: 510
Re: anyone know valve clearances for 2qm20?

https://dl.dropbox.com/u/33370298/2Q...ice_manual.pdf
__________________
See you out there ....... Alan S.V. Elyse
now http://svelyse.weebly.com
older http://voyagesofDIVA.weebly.com
Albro359 is offline   Reply With Quote
Old 13-03-2013, 21:01   #13
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: anyone know valve clearances for 2qm20?

thanks for the manual - solid gold and most appreciated. OK - 0.15mm it is. I've got some injector nozzles i bought last time i was down at westhaven - been putting off fitting them til i had a better idea of the setup - now i've got that too, so thanks again. happy sailing, i miss the hauraki gulf...
__________________

__________________
charliehows is offline   Reply With Quote
Reply

Tags
2qm20

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 10:40.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.