Author Topic: Fuel filters  (Read 950 times)

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Offline 2wheels

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Fuel filters
« on: August 24, 2010, 08:20:18 AM »
Has anyone used these filters?
It looks like you just slide them inside the 1/4 inch hose.

http://cgi.ebay.ca/1-4-INLINE-FUEL-FILTERS-TRIUMPH-BSA-NORTON-/260605367538?pt=Motorcycles_Parts_Accessories
1970 CB750 K0 (I can't believe I tossed my duck tail seat in the trash 30 years ago)

Offline flybox1

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Re: Fuel filters
« Reply #1 on: August 24, 2010, 08:24:03 AM »
if you are sans in-tank-filter, dont use these, once they clog, your fuel supply is completely blocked with no way for the fule to pass, and you are stranded roadside digging this out of your fuel line.

there is no substitute for a clean tank and fresh gas  8)
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

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Offline domer

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Re: Fuel filters
« Reply #2 on: August 24, 2010, 09:03:51 AM »
im having pretty good success with these.

Offline 2wheels

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Re: Fuel filters
« Reply #3 on: August 24, 2010, 10:11:55 AM »
domer
I looked at those filters on ebay.  Looks like they would fit.  But 30 dollars??  ::)  (that's with shipping)

And over 40 dollars from bike bandit


flybox1
These filters are quite small and would plug up if my tank was in bad shape but that's not my problem.   There's allways going to be some crud in a 32 year old tank.  I just need to make sure it doesn't get to the carbs.
« Last Edit: August 25, 2010, 05:33:51 PM by 2wheels »
1970 CB750 K0 (I can't believe I tossed my duck tail seat in the trash 30 years ago)

Offline flybox1

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Re: Fuel filters
« Reply #4 on: August 24, 2010, 10:32:15 AM »
filters like the one domer posted can be bought for under $10.

http://store.knfilters.com/search/product.aspx?Prod=81-0221

if you dont have a MC shop in your area, and dont want to order online, look for them in a lawnmower repair section of an auto parts or bigbox store...
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline TwoTired

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Re: Fuel filters
« Reply #5 on: August 24, 2010, 10:33:59 AM »
 There's allways going to be some crud in a 32 year old tank.  I just need to make sure it doesn't get to the carbs.

...and that's what the in-tank filter is for...

Anyway, you only have to stop particles the same size or bigger than the smallest orifice in the carb, which usually in the pilot circuit.
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline 2wheels

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Re: Fuel filters
« Reply #6 on: August 24, 2010, 10:46:57 AM »
Ok
Am I misunderstanding the "in tank" filter.
I thought there is just a screen inside the tank. 
Are you's talking about a filter that's added (aftermarket) inside the tank?
1970 CB750 K0 (I can't believe I tossed my duck tail seat in the trash 30 years ago)

Offline TwoTired

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Re: Fuel filters
« Reply #7 on: August 24, 2010, 10:52:39 AM »
Depends on which bike you are talking about. Honda made some changes throughout the model years.

The F3 has an in tank filter above the fuel valve.
The K0 has a sediment bowl and screens above that bowl on the fuel valve.

Both will stop bits that can clog fuel flow in the carburetors when in proper working order.

Cheers,
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline domer

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Re: Fuel filters
« Reply #8 on: August 24, 2010, 10:58:22 AM »
domer
I looked at those filters on ebay.  Looks like they would fit.  But 30 dollars??  ::)  (that's with shipping)

flybox1
These filters are quite small and would plug up if my tank was in bad shape but that's not my problem.   There's allways going to be some crud in a 32 year old tank.  I just need to make sure it doesn't get to the carbs.

bike bandit has the 90 degree filters for about $3. i found they work a lot better than the straight through. i had flow issues with the straight version.

Offline 2wheels

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Re: Fuel filters
« Reply #9 on: August 24, 2010, 11:21:37 AM »
I was actually having problems with the F3, the carb overflows were doing there job.  And leaking gas all over the place.
I drained all 4 fuel bowls and I'm good now.
But I want to prevent this from happening again, so I was on the search for filters.
I live in the sticks so there are no bike shops near by, just a couple chain saw places.  No one had filters that would fit in there.
So I started with Ebay.
Thanks for all your guidance
The intank filter/screen appears to be expensive, if I believe the www.ronnies  site.
I check bike bandit out, see what they charge to ship up to Canada.

The 750 K0 could also use new filters (it has 2 gas lines from the tank and even less space to put them).
I thought the filters you insert into the hose would at least fit great.
1970 CB750 K0 (I can't believe I tossed my duck tail seat in the trash 30 years ago)

Offline TwoTired

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Re: Fuel filters
« Reply #10 on: August 24, 2010, 11:43:49 AM »
It's not expensive if it gets makes your bike driveable and reliable without further maintenance.  Further, you might find it less "expensive" if you do some shopping.

Would you rather have your wound heal closed, or rely on a band aid to keep from leaking out the rest of your life?



Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline 2wheels

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Re: Fuel filters
« Reply #11 on: August 24, 2010, 12:08:03 PM »
Expensive is allways a relative term.

Thanks for all your help.
1970 CB750 K0 (I can't believe I tossed my duck tail seat in the trash 30 years ago)