Putting inline filter on 51' 8N

Uncle Bucky · Jun 9, 2021

Wondered if anyone has done this and if they have had any problems.

Both of my tractors, my 8N and Farmall 460, set at the farm over an hour away and someone has put stuff in both gas tanks.

I have drained and cleaned best I can the tank on the 8N but there still must be sediment as it is showing up in the sediment bowl

I was going to put it above the carburator maybe 8" or so.

Thanks for the imput it is appreciated

grayrider · Jun 9, 2021

Ive done it on 9n, 2n, and 8n tractors as well as others, no problems in doing so...

Steve@Advance · Jun 9, 2021

It's been done thousands of times.

Some get by with it, some don't...

Using a paper type filter on a gravity system is not a god practice. The paper is somewhat
restrictive, and doesn't take much to clog it to the point it will slow the flow. If you do go with
it, be prepared to have to take it off and blow backward through it occasionally to free it up
enough to flow again.

Another alternative is it find a fine screen type filter made for gravity systems. They can be hard
to find. One kind is a glass tube with screw on ends. I have used some of these but they are prone
to leak.

The best solution is to keep everything factory, a clean tank, a screen standing inside the tank
above the valve fitting, a screen in the sediment bowl, and a screen in the fitting going into the
carb.

With all this in place it should be trouble free. I just hate cutting a factory steel line. Having
a plastic filter and rubber lines is a source for trouble.

Tony in SD · Jun 9, 2021

There are already 3 gas filters in the fuel path of an 8N. Guess adding another wont hurt but I dont think it will help.

Uncle Bucky · Jun 9, 2021

(reply to post at 05:11:12 06/09/21)

Thanks for the reply.. I was kind of leaning toward not putting it on, it was suggested by someone

Thanks !

Uncle Bucky · Jun 9, 2021

(reply to post at 05:07:02 06/09/21)

Thanks

BarnyardEngineering · Jun 9, 2021

(quoted from post at 04:46:43 06/09/21) there still must be sediment as it is showing up in the sediment bowl

That's exactly what a sediment bowl is supposed to do.

If you do add a filter, make sure it is for gravity flow fuel systems. Use as large of a filter as you can find.

Geo-TH,In · Jun 9, 2021

I put a see through in line filter on Jubilee.
The heat from radiator and engine would heat gas
in tank. On a hot day, the fuel temp got around
155, you could see an air bubble forming inside
the filter. Fuel stopped flowing and within
minutes tractor ran out of gas. As gas temps
lowered, fuel would start flowing again.

I tried everything to keep fuel temps down.
I finally bought a new tank. The inside of old
tank was flaking off a gray like coating. I
bought a new tank from YT.

Traditional Farmer · Jun 9, 2021

I have in line filters on all my gasoline tractors,get a clear filter you'll be surprised at how much gets thru the screen on the sediment bulb.

Dean · Jun 9, 2021

If you do so be certain to buy a filter designed for gravity flow fuel systems.

They are available but not common.

Dean

Crazy Horse · Jun 9, 2021

Some have mentioned a 'gravity flow filter' ..... I've never heard of that term before and I am wondering how a guy knows what he is buying when he browses the selection of filters he sees? Maybe they could reply if they read this. I do know that on my Massey Harris 20, I have an inline filter that usually works well but now and then after sitting for a while and not running, I have to crack the connections at both ends of the filter/rubber hose to bleed the air out of it. You can see air bubbles escaping and when that stops, reconnect it.

rrlund · Jun 9, 2021

Do what you want to do, but don't be surprised if it vapor locks when it warms up.

Geo-TH,In · Jun 9, 2021

Rich'sToys · Jun 9, 2021

Some of my tractors have had in-line filters on them for years and have never had any problems. When I go to buy one I never ask for anything special--I just ask for an in-line fuel filter. Some are metal, some are plastic. It doesn't seem to make any difference.

Blackhole49 · Jun 9, 2021

In my situation, I don't need it. In your situation, I would do it.

Tgrasher · Jun 9, 2021

One other factor that comes into play is how full your tank is. I found a fuller tank provides more pressure to offset the filter restrictions. I put a small
shield between filter and exhaust pipe to cut down heat transfer.

Dennis P · Jun 9, 2021

I guess I cant agree with a paper filter being bad
practice because it plugs easily. Isnt that what its
supposed to do if theres a lot of containments in
fuel system? I run one on everything and they are
easy to change.

old · Jun 9, 2021

Most of the time and in line filter causes more problems then it fixes. BTDT and have removed a goo many of them when people call me with fuel problems on there tractors. Get a deep sediment bowl and make sure you have a good screen. To clean the tank out remove the sediment bowl and flush it out

Hobo,NC · Jun 9, 2021

(quoted from post at 20:25:05 06/09/21) I guess I cant agree with a paper filter being bad
practice because it plugs easily. Isnt that what its
supposed to do if theres a lot of containments in
fuel system? I run one on everything and they are
easy to change.

Yep that's what they are spose to do : )... Paper filters I grantee they will flow all the fuel you can get to it pressure/gravity are what ever until contamination restricts it...

General rule of thumb, a contaminated fuel system always wins filters of any kind are not : (...

Good clean fuel is hard to beat...

DR. EVIL · Jun 9, 2021

I've had GREAT success with Mr. Gasket clear glass, actually Pyrex tube with a nylon mesh filter, two diecast zinc with chrome plating ends with 1/4, 5/16, or 3/8 hose barb ends. The mesh is so small they even filter out water from gasoline. All kinds of dirt too, plus the pyrex is clear, the nylon filter is white, easy to see when the filter needs cleaning.
I've had one with 3/8 hose barbs on my Super H for about 20 years, I've cleaned it once because I had it apart working on the gasline. I first used one on my 1973 OSSA 250 Six Day Replica enduro bike, it had a Mukuni carb. Ossa is Spanish, Europe put fuel filtration in the carb. Japan (Mukuni is Japanese) puts fuel filtration in the gas tank. Jap carb Spanish bike, no fuel filter, when the fiberglass tank lining started pealing the carb plugged constantly, the Mr. Gasket stopped it. I put one on my Cub Cadet to replace the sediment bulb that let anything smaller than a hay bale through. The Mr. Gasket filter never really got that dirty, cleaned it twice in 15-20 years, once because it strained enough WATER out of the gas to fill the filter and stop gas flow. You could see the line between the gas & water as it filled over the summer.
I get them from SUMMIT RACING, about $12 each. I wouldn't buy a cheap imitation. I first read about them in HOT ROD magazine in the 1970's.

grayrider · Jun 9, 2021

Im not one to keep a tractor 100% authentic, if theres ways to make something function better for me then I do it, I
mentioned earlier on your post here that I use inline filters and having owned probably 50+ tractors in my life Ive
never had a problem by using inline filters. I wanted to also mention another thing that Ive done on a few tractors is
install a drip leg below the tank or before the carb so that it can catch rusty dirty sediment and I can open the drip
leg at any time and do a quick drain of the trapped sediment in drip leg. Works for me, Im sure some of the other
YTers will barbecue me for it but its my tractors and I do what works for me.

docmirror · Jun 9, 2021

These are designed for gravity flow:

https://www.amazon.com/dp/B076JF1FYP/ref=sspa_dk_detail_4?psc=1&pd_rd_i=B076JF1FYP&pd_rd_w=m52dE&pf_rd_p=5d846283-ed3e-4512-a744-a30f97c5d738&pd_rd_wg=7gF8Y&pf_rd_r=MSE0K0EPC20888TB98NW&pd_rd_r=d13ae7b5-4bd7-464f-979c-741fc2560077&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzRlJJOElLWDA4TDhTJmVuY3J5cHRlZElkPUEwOTk4NTUxUUFKNlpHWDcyNE5GJmVuY3J5cHRlZEFkSWQ9QTA4MDg5OTUyVzJXN1ZGU0NZRUtQJndpZGdldE5hbWU9c3BfZGV0YWlsX3RoZW1hdGljJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

504 · Jun 9, 2021

Yes an inline can help,buy a 3/8 filter not a 1/4 inch(the clamps will squeeze it tight. The next thing will take a little homework
Go or call some welding store in your area and ask for a used(scraped mig liner). They look just like a throttle cable from a lawn
mower(they will work too). If you will rod that down the steel gas line a few times you will be surprised how much crud will come
out of the line. Of course take the lines off before cleaning.

Traditional Farmer · Jun 10, 2021

Better changing filters and stopping the crud there instead of having to clean it out of the carb.Another thing about the filter is if water goes thru them the filter material will swell up and restrict or stop the fuel flow,don't see stopping water getting to the carb as a bad thing.On my gas tractors with in line filters I rarely have any carb problems.

Jim.ME · Jun 10, 2021

WIX 33972 (NAPA 3972) is a 5/16" in line plastic screen media (see-thru housing) filter.

Baldwin BF7863 is the same type housing and media but has the 1/4" and 5/16" universal inlet and outlets.

Edited to add the missing digit. Thanks, Crazy Horse

This post was edited by Jim.ME on 06/10/2021 at 06:22 am.

Crazy Horse · Jun 10, 2021

JIM You said .... 'WIX 33972 (NAPA 3972) is a /16 in line plastic screen media (see-thru housing) filter.'

So maybe 3/16 or more likely 5/16 ???

Your 'numerator' in the fraction is missing. Thanks to Mr. Boyce from my grade 7 math class .... ha !!

Putting inline filter on 51' 8N

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