Recomendations...VO Pre-Filter?

For discussing the modifications needed for diesel vehicles to run with 2 tank veggie oil conversions.

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Recomendations...VO Pre-Filter?

Postby colonelsanders » Wed Jan 14, 2009 9:56 am

Hi all, was wondering if anyone has any advice on small inline fuel pre filters, the filter will be under suction and it does not need to be of a fine micron rating. just something to catch debris that has been clogging the inlet of my lift pump screen and not restrict flow at the same time.

the type i was looking for is just a simple clear barrel style that would go for my vo inline, cheap, and easy to find. it would be nice to find something i could re use and clean out, instead of replacing each time it clogs i.e. some sort of fine screen deal.
"be the change you want to see in this world"
93' Dodge W250 CTD 4x4 Auto 170+ 2 tank WVO
One ton single wheel rear end
Piston lift pump retro fit

http://panamericantrip.blogspot.com
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Postby WD8CDH » Wed Jan 14, 2009 12:07 pm

I have used the small inline filters from the '85 and older Mercedes diesels with good success. Not a replacable element but you can backflush them. They were under $3 each. They are clear plastic with ends for 5/16 fuel line.

http://catalog.mercedesshop.com/item.ww ... eight=0.03
Ron Schroeder
WD8CDH
'85 MB 300DT 2 Tank
Since '81 former WVO conversions:
'83 240D
'80 Audi 4000D
'83 Isuzu Pup
'86 Golf
'76 Honda Civic with Kubota engine
Prior to the cars, several generators
Kubota Tractor
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Postby colonelsanders » Fri Jan 16, 2009 9:29 am

Just found this little unit on ebay, pretty cool and cleanable!!,

http://cgi.ebay.com/ebaymotors/ws/eBayI ... &viewitem=
"be the change you want to see in this world"
93' Dodge W250 CTD 4x4 Auto 170+ 2 tank WVO
One ton single wheel rear end
Piston lift pump retro fit

http://panamericantrip.blogspot.com
colonelsanders
 
Posts: 26
Joined: Mon Nov 03, 2008 3:55 pm
Location: Tucson, AZ...again

Postby John Galt » Fri Jan 16, 2009 1:12 pm

These Purolator 'Pro Fuel' inline filters work well in that application.
Image
Image
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Postby coachgeo » Fri Jan 16, 2009 6:49 pm

John,

just a heads up, not sure if the threads were written by alarmist or... logical thinkers, but I have read post from folk who claimed to have those fall apart on them and be sources for leaks.

Particularly those like the ones pictures. Matters the lot they came out of but some have a lots have more knickle in the cheap metal construction than others and like galvanized metal..... WVO breaks it down.

the more expensive ones.... seem to be better/higher quality metal, less issues like above.

Have used these cheap ones myself and had mixed results. Learned to not use the plastic nipples that come with them. Bought new brass or steel ones that match the threads. Plastic ones created air leak issues, or fuel leak issues (matters where mounted) too easy.
Life; It's all in the Balance

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Postby John Galt » Fri Jan 16, 2009 8:56 pm

I was VERY specific about recommending PUROLATOR units, NOT cheap knock-offs.
I have no idea what you refer to with your indistinct reference to "those" and "these".

With any device, if the manufacturer's instructions such as pressure limits are exceeded then failure could occur. I've used the Purolator units for years without problem.

The world can not be made idiot proof, nature will always provide better idiots.
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Postby coachgeo » Fri Jan 16, 2009 9:36 pm

John Galt wrote:I was VERY specific about recommending PUROLATOR units, NOT cheap knock-offs.....
What you smoking...Purlators are cheap knock offs lol.

Having used many! As I said... some with success... some not and that was on both gassers and diesel rigs much less with WVO.

The better ones from places like Summit Racing are made of different metal entirely.
Life; It's all in the Balance

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Postby John Galt » Fri Jan 16, 2009 10:06 pm

What you smoking

I don't smoke
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Postby WD8CDH » Mon Jan 19, 2009 8:45 am

I have had problems with the Purolator filters leaking too. And the replacement elements were more expensive than the MB filters last time that I looked.
Ron Schroeder
WD8CDH
'85 MB 300DT 2 Tank
Since '81 former WVO conversions:
'83 240D
'80 Audi 4000D
'83 Isuzu Pup
'86 Golf
'76 Honda Civic with Kubota engine
Prior to the cars, several generators
Kubota Tractor
WD8CDH
 
Posts: 103
Joined: Tue May 27, 2008 11:44 am
Location: NY

Postby coachgeo » Mon Jan 19, 2009 9:19 am

WD8CDH wrote:... And the replacement elements were more expensive than the MB filters last time that I looked.
One advantage to that setup is the replacement filters are washable.

The packs of three may be more expensive than on MB one true. But then that is three compared to one, then you may have took that into account already. Haven't bought any in awhile.
Life; It's all in the Balance

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Postby WD8CDH » Mon Jan 19, 2009 2:20 pm

coachgeo wrote:
WD8CDH wrote:... And the replacement elements were more expensive than the MB filters last time that I looked.
One advantage to that setup is the replacement filters are washable.

The packs of three may be more expensive than on MB one true. But then that is three compared to one, then you may have took that into account already. Haven't bought any in awhile.


The MB filters are washable too. (I just did that on the diesel side last night :( )

Last price that I saw for the 3 pack of Purolator elements was over $10.
Ron Schroeder
WD8CDH
'85 MB 300DT 2 Tank
Since '81 former WVO conversions:
'83 240D
'80 Audi 4000D
'83 Isuzu Pup
'86 Golf
'76 Honda Civic with Kubota engine
Prior to the cars, several generators
Kubota Tractor
WD8CDH
 
Posts: 103
Joined: Tue May 27, 2008 11:44 am
Location: NY

Postby coachgeo » Mon Jan 19, 2009 3:28 pm

WD8CDH wrote:
coachgeo wrote:
WD8CDH wrote:...Last price that I saw for the 3 pack of Purolator elements was over $10.
Yikes...... :shock: last time I saw few years ago was around $3.50 I THINK
Life; It's all in the Balance

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Postby John Galt » Mon Jan 19, 2009 3:30 pm

MBenz filters are not available as easily as Purolator filters.
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Postby colonelsanders » Tue Jan 20, 2009 1:12 am

anyone have an opinion on the product connected to the ebay link i listed above? any experience w/ this kind of pre filter?

i would rather go w/something metal and this one looks like it would have a better flow rate and easier clean ability.
"be the change you want to see in this world"
93' Dodge W250 CTD 4x4 Auto 170+ 2 tank WVO
One ton single wheel rear end
Piston lift pump retro fit

http://panamericantrip.blogspot.com
colonelsanders
 
Posts: 26
Joined: Mon Nov 03, 2008 3:55 pm
Location: Tucson, AZ...again

Postby John Galt » Tue Jan 20, 2009 1:45 am

colonelsanders wrote:anyone have an opinion on the product connected to the ebay link i listed above? any experience w/ this kind of pre filter?

i would rather go w/something metal and this one looks like it would have a better flow rate and easier clean ability.

They're commonly available at a furnace or boiler supplier, where they're used as a prefilter on oil fired burners.
John Galt
 
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