Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 07-05-2012, 21:25   #16
Registered User

Join Date: May 2008
Posts: 1,967
Re: racor 500 filter what micron filter?

Yanmar specs 30 micron for most of its engines on the claim that finer filters can damage the fuel pump. Many people, including me, ignore this but if your engine is a Yanmar and is under warranty you might want to stick with their spec.

Carl
__________________

__________________
CarlF is offline   Reply With Quote
Old 07-05-2012, 22:49   #17
Senior Cruiser
 
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,702
Images: 122
Re: racor 500 filter what micron filter?

Quote:
Originally Posted by Nicholson58 View Post
here is our set-up. Two Racors on the left with manual switching valves, vacuum guage and water alarms. Racor on the right is Gen-Set. There is also a small electric pump for forced filling of an empty bowl. Never any bleed issues for us either. The electric fill pump is beefy enough to force an air bleed through the manual pump on the Westerbeke and through the fuel rail if necessary.
Jees! It would be nice, to have all that room, to mount all that stuff and still be able to see it from a distance.
__________________

__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote
Old 07-05-2012, 22:51   #18
Senior Cruiser
 
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,702
Images: 122
Re: racor 500 filter what micron filter?

Quote:
Originally Posted by CarlF View Post
Yanmar specs 30 micron for most of its engines on the claim that finer filters can damage the fuel pump. Many people, including me, ignore this but if your engine is a Yanmar and is under warranty you might want to stick with their spec.

Carl
FYI- The screw on filters for the 3JH/4JH's are 5 Ám from the dealer.
__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote
Old 08-05-2012, 20:24   #19
Registered User
 
Nicholson58's Avatar

Join Date: Jan 2011
Location: Live aboard
Boat: Camper & Nicholson58 Ketch - ROXY Traverse City, Michigan No.668283
Posts: 3,466
Images: 83
Re: racor 500 filter what micron filter?

Quote:
Originally Posted by CarlF View Post
Yanmar specs 30 micron for most of its engines on the claim that finer filters can damage the fuel pump. Many people, including me, ignore this but if your engine is a Yanmar and is under warranty you might want to stick with their spec.

Carl
WOW. In my business, we call 30 micron filters "rock catchers".

If the filter area is large enough and the element is lightly loaded, finer is OK in my opinion. If there are worries, call Yanmar and ask. they should be able to OK a finer element and specify the max vacuum to protect the pump. The other thing you can do is install a pollishing loop of higher flow through a fine filter to cycle diesel from tank to pump to filter to tank. the engine is not involved but over time, the fuel in the tank(s) will become very clean. We have all seen these systems marketed but you can easily make your own.
__________________
Nicholson58 is offline   Reply With Quote
Old 08-05-2012, 20:58   #20
Registered User

Join Date: May 2008
Posts: 1,967
Re: racor 500 filter what micron filter?

Sorry. I should have said that 30 micron spec from Yanmar is for the primary filter. The secondary filter on the engine is finer. I believe 5 or 10 micron depending on the engine.

Carl
__________________
CarlF is offline   Reply With Quote
Old 08-05-2012, 21:25   #21
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: racor 500 filter what micron filter?

CarlF, in all the threads we have had on the forum I had never heard that before. Do you have a reference to the Yanmar edict against anything less than a 30 micron filter?
__________________
DeepFrz is offline   Reply With Quote
Old 09-05-2012, 08:15   #22
Senior Cruiser
 
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,702
Images: 122
Re: racor 500 filter what micron filter?

FYI- I have personally sent an email to Yanmar, and did receive a reply stating and in reference to the screw-on filter # 129470-55703, which are for the 3JH & 4JH motors;

Thank you for contacting Yanmar.

The micron size is 5. After researching this with my Parts dept. it appears that this is the lowest micron filter available from Yanmar.

Thank you and have a great day

Yanmar customer support


Erik Coyle
Customer / Technical support rep.
Marine Engine Division of Yanmar America

Feb. 21, 2012
__________________

__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote
Reply

Tags
racor

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 14:50.


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.