Fuel filter into fuel tap - is it threaded or just press-in?

gpzkat said:
I have had that N15 tank's cork gasket disintegrating gradually and leaving bits in the tank. I ran one day without a filter as I was tuning it, and a speck got in the float valve and it dripped gas through the overflow. First time I've every had any such swarf in a tank in dozens of bikes over too many decades. I think maybe rubber would be better. I don't want to start a rubber vs cork fight tho.
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Don’t bring a rubber to a cork fight.
 
Tornado said:
My chain link has been fine for 20k miles now, BTW.
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But using your logic, you should ditch the master link because it occasionally fails, but you don't do that..... So you are saying that the potential failure point of an external filter causes you to abandon them, but the potential failure point of a master link doesn't bother you, so you are inconsistent with your application of logic. Didn't you see Jerry's thread the other day where he lost his master link on his BSA outting?.....

If you keep having issues with external filters, where I have not had any issues for over 40 years of using them, it suggests perhaps it's your choice of filter or your method of securing them that accounts for the difference in our experiences. Or,... maybe I'm gonna fry one of these days when my fuel line inevetably fails while the sky is falling.. :rolleyes:
 
gpzkat said:
I have had that N15 tank's cork gasket disintegrating gradually and leaving bits in the tank. I ran one day without a filter as I was tuning it, and a speck got in the float valve and it dripped gas through the overflow. First time I've every had any such swarf in a tank in dozens of bikes over too many decades. I think maybe rubber would be better. I don't want to start a rubber vs cork fight tho.
Click to expand...
The fuel tank cap on the N15 or G15 tank on my P11 uses a rubber gasket. Not the same type fuel tank cap you have though. I have another alloy DomiRacer cap similar to yours, but can't use it because my filler neck doesn't have the two rivet studs in it for the cap to screw down on. It has a red carboard gasket in it. I call it cardboard, but it's probably some other paper material similar to what Amal float bowl gaskets were/are made of.
 
o0norton0o said:
But using your logic, you should ditch the master link because it occasionally fails, but you don't do that..... So you are saying that the potential failure point of an external filter causes you to abandon them, but the potential failure point of a master link doesn't bother you, so you are inconsistent with your application of logic. Didn't you see Jerry's thread the other day where he lost his master link on his BSA outting?.....

If you keep having issues with external filters, where I have not had any issues for over 40 years of using them, it suggests perhaps it's your choice of filter or your method of securing them that accounts for the difference in our experiences. Or,... maybe I'm gonna fry one of these days when my fuel line inevetably fails while the sky is falling.. :rolleyes:
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As I said, I do like have a filter, but the plastic clears ones on market these days are a crap shoot. Will not be fitting them again on my bikes. Am completely open to trying other types when i find a compact one of better material.

Please stop you chain link comparisons, those do not fail at the rate of these filters and never will.
 
baz said:
Turned out to be the pilot blocked on the middle carb
Had to rod it out a 100psi wasn't enough to clear it
Just got back from some exhaustive testing!!
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Glad you sorted it Baz.
The ‘issues’ I’ve had with particles upsetting Japanese carbs were all flooding ie particles preventing the float needle from shutting off fully. I’ve had this with Mikuni and Keihin carbs and that’s why I now always use in line filters with these carbs.
I’ve not personally suffered blockages (yet) and suspect they’re caused by issues other than particles, ie stale fuel, corrosion, etc and thus are not related to filtration.
 
Tornado said:
As I said, I do like have a filter, but the plastic clears ones on market these days are a crap shoot. Will not be fitting them again on my bikes. Am completely open to trying other types when i find a compact one of better material.

Please stop you chain link comparisons, those do not fail at the rate of these filters and never will.
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They’re expensive, but they last a lifetime (well, longer actually) and never fail…

Try Pingel.
 
Last edited:
Fast Eddie said:
Glad you sorted it Baz.
The ‘issues’ I’ve had with particles upsetting Japanese carbs were all flooding ie particles preventing the float needle from shutting off fully. I’ve had this with Mikuni and Keihin carbs and that’s why I now always use in line filters with these carbs.
I’ve not personally suffered blockages (yet) and suspect they’re caused by issues other than particles, ie stale fuel, corrosion, etc and thus are not related to filtration.
Click to expand...
That's mainly the problem I've had regarding the float needle seat
I'm suspecting my 2quid eBay filters are not filtering at all!
The pilot was plugged with some black shit
Didn't look like rust particles which I was half expecting from this old petrol tank
 
Fast Eddie said:
They’re expensive, but they last a lifetime (well, longer actually) and never fail…

Try Pingel.
Click to expand...
Yikes, $116 CAD each at Fortnine.

Seems quite a few alloy types of same or smaller dimensions for around $15 each. You loose fuel visibilty, but i run translucent yellow silicone hoses so thats not an issue.
 
baz said:
Yep
I'll take a look to see if there's any delamination 👍
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I use 5/16" black push-on fuel injection hose rated a 60psi. I've never seen any of it in a carburetor or fuel injector when I used the same type hose in 3/8" on a fuel injected V8. I use stainless wrapped PTFE hose and AN fittings on the V8 now, and should do the same on my Norton, but will probably put it off forever.
 
Tornado said:
Yikes, $116 CAD each at Fortnine.

Seems quite a few alloy types of same or smaller dimensions for around $15 each. You loose fuel visibilty, but i run translucent yellow silicone hoses so thats not an issue.
Click to expand...
Yer pays yer money…

Waddya want… legs covered in fuel or filters that work…?!

Seriously, what’s $116 CAD amortised over the rest of your life ?!?

They don’t need to be transparent, just unscrew and clean out once a year.
 

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