Yanmar 4JH air filter - 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 12-23-2006
Senior Member
 
Join Date: Jul 2001
Posts: 1,174
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 14
k1vsk will become famous soon enough
Yanmar 4JH air filter

First question:
I'm wondering if anyone with a 4JH has an air filter on their engine intake?
Some of the other Yanmars have filters but mine does not. Both the engine and service manuals indicate the location of the silencer where a filter would normally be. From these, it would appear that Yanmar didn't intend for a filter which doesn't make sense - I wouldn't expect lots of dust in the engine intake but it is possible for debris, belt dust, bugs, etc to enter.
Second question:
If I were to install a high capacity filter, would there be any long-term affect of restricting air flow to the engine.
Reply With Quote Share with Facebook
  #2  
Old 12-23-2006
RichH's Avatar
Senior Member
 
Join Date: Jul 2000
Location: Pennsylvania
Posts: 2,743
Thanks: 9
Thanked 63 Times in 56 Posts
Rep Power: 15
RichH will become famous soon enough
Most of what you see on marine diesels are not filters but 'silencers'. Even in the middle of the ocean, air is 'dirty' and containes a lot of hard submicronic particulate - especially if there is a desert or volcano upwind. Does this affect the service life of an engine ... probably not as these particles are extremely small and approach being 'harmless' to the engine as they contain little inertia / mass once inside. If you are keen to actually put a FILTER on the engine you can apply 'retro-fits' such as the dry paper elements from such manufacturers as "K&N", etc. ... just be sure to well 'oversize' the filter ... based on 'cubic ft. per miniute' of volumetric aspiration of the engine at 'wide open throttle'. Forget about 'wet' or oil-bath filters as they are essentially 'worthless'.
Reply With Quote Share with Facebook
  #3  
Old 12-23-2006
.
 
Join Date: Nov 2006
Posts: 10,855
Thanks: 0
Thanked 3 Times in 2 Posts
Rep Power: 12
Giulietta is just really nice Giulietta is just really nice Giulietta is just really nice Giulietta is just really nice Giulietta is just really nice
K1

Just called ther Yanmar Importer over here and asked him the question.

I Have a 3JH4E, and they all must have an air filter.
It's a chicane type filter, and is a plastic box located on transmission side satarbord side.

He said its not urgent, but recommends you put one.

Can't post thwe photo, unfortunately. I have one if you PM me I can send it to you.
Reply With Quote Share with Facebook
  #4  
Old 12-23-2006
Senior Member
 
Join Date: Jul 2001
Posts: 1,174
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 14
k1vsk will become famous soon enough
Thanks guys.
I just checked the Yanmar service manual for the 1GM, 2GM and 3 GM/3HM engines and they too show only the silencer. It seems strange to me that only some (one?) Yanmar would have an air filter.
Regardless, I appreciate your responses and will check further on what kind of restriction the engine can tolerate.
Reply With Quote Share with Facebook
  #5  
Old 12-23-2006
billangiep's Avatar
Senior Member
 
Join Date: Dec 2003
Location: Florida Gulf Coast
Posts: 295
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
billangiep is on a distinguished road
For Yanmar silencer and silencer elements.... http://www.marinedieseldirect.com/ca...dboat&show=ALL Parts catalogs for Yanmars and most other diesel engines. I just perchased two elements for my Yanmar 3GMD for around $14.00 each.
Bill,
Reply With Quote Share with Facebook
  #6  
Old 12-23-2006
.
 
Join Date: Nov 2006
Posts: 10,855
Thanks: 0
Thanked 3 Times in 2 Posts
Rep Power: 12
Giulietta is just really nice Giulietta is just really nice Giulietta is just really nice Giulietta is just really nice Giulietta is just really nice
Are you talking about Silencers or Air filters??

I thought he lacks an air filter.
Reply With Quote Share with Facebook
  #7  
Old 12-23-2006
billangiep's Avatar
Senior Member
 
Join Date: Dec 2003
Location: Florida Gulf Coast
Posts: 295
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
billangiep is on a distinguished road
Giulietta,
The silencer has an air filter in it. Yanmar just calls them silencer elements.
Reply With Quote Share with Facebook
  #8  
Old 12-23-2006
Senior Member
 
Join Date: Jul 2001
Posts: 1,174
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 14
k1vsk will become famous soon enough
The silencer in both my 4JH and that of my son's 2GM20 is hollow - no filter! The silencer itself won't filter a baseball!
Reply With Quote Share with Facebook
  #9  
Old 12-23-2006
billangiep's Avatar
Senior Member
 
Join Date: Dec 2003
Location: Florida Gulf Coast
Posts: 295
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
billangiep is on a distinguished road
Yanmar makes a cone shaped air filter (silencer element) that fits inside the silencer. My past 2GM had the same filter silencer as my present 3GMD.
Bill,
Reply With Quote Share with Facebook
  #10  
Old 12-23-2006
billangiep's Avatar
Senior Member
 
Join Date: Dec 2003
Location: Florida Gulf Coast
Posts: 295
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
billangiep is on a distinguished road
Air filter (silencer) photo and part # 128170-12540Air Intake Silencer ElementAdd to Cart117.74
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
air filter / flame arrestor owenmccall Gear & Maintenance 0 06-14-2005 07:10 AM
Surviving in Light Air Dan Neri Racing Articles 0 09-30-2004 08:00 PM
Low-Pressure Systems Michael Carr Seamanship Articles 0 12-08-2000 07:00 PM


All times are GMT -4. The time now is 04:11 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.