The best part about working on your bike...

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Sadly in the UK I find nothing worth listening to on FM... So it HAS to be 'modern' DAB for me (though the adverts usually get it switched off pretty pronto)
 
Interesting use of Dowty washers, only ever used them on petrol taps, didn't know they were compatible with areas that get much hotter like oil passages etc.
I bought an (expensive) stainless hose rocker oil feed last summer to replace the ageing standard plastic one. For the life of me couldn't get the bottom banjo bolt (near the OPRV) to seal. Tried various sealants on copper and aluminium washers but the continual dribble of oil from the tank stymied any proper prep of the sealing area(without taking timing cover off). The banjo bolts supplied are allen headed and smaller diameter hence the issue I guess though no damage to either sealing surface apparent? Might see if a Dowty can be sourced for this application, different to stat o seal by the way,though can't recall how, thickness of rubber part relative to the metal bit I think??
 
wavey_davey said:
Interesting use of Dowty washers, only ever used them on petrol taps, didn't know they were compatible with areas that get much hotter like oil passages etc.
I bought an (expensive) stainless hose rocker oil feed last summer to replace the ageing standard plastic one. For the life of me couldn't get the bottom banjo bolt (near the OPRV) to seal. Tried various sealants on copper and aluminium washers but the continual dribble of oil from the tank stymied any proper prep of the sealing area(without taking timing cover off). The banjo bolts supplied are allen headed and smaller diameter hence the issue I guess though no damage to either sealing surface apparent? Might see if a Dowty can be sourced for this application, different to stat o seal by the way,though can't recall how, thickness of rubber part relative to the metal bit I think??
Click to expand...
Who did you get the SS line from?

You do need to make sure the mating surfaces are perfect and that you always use new washers anytime you remove them, if they are copper you may be able to anneal them.
 
swooshdave said:
Who did you get the SS line from?

You do need to make sure the mating surfaces are perfect and that you always use new washers anytime you remove them, if they are copper you may be able to anneal them.
Click to expand...
From memory I did anneal new copper washers as very familiar with that process from my Triumphs. I thought the kit was from RGM but looking at their website just now shows normal hex headed banjos in the product picture? Maybe I got tempted by some Goodrich allen headed bling, will have to check my receipts. If a Dowty isn't viable then I'm sure freshly annealed copper washers plus Hylomar or loctite 518 or three bond etc on properly degreased surfaces will work, just being lazy!
 
wavey_davey said:
Interesting use of Dowty washers, only ever used them on petrol taps, didn't know they were compatible with areas that get much hotter like oil passages etc.
I bought an (expensive) stainless hose rocker oil feed last summer to replace the ageing standard plastic one. For the life of me couldn't get the bottom banjo bolt (near the OPRV) to seal. Tried various sealants on copper and aluminium washers but the continual dribble of oil from the tank stymied any proper prep of the sealing area(without taking timing cover off). The banjo bolts supplied are allen headed and smaller diameter hence the issue I guess though no damage to either sealing surface apparent? Might see if a Dowty can be sourced for this application, different to stat o seal by the way,though can't recall how, thickness of rubber part relative to the metal bit I think??
Click to expand...
My Venhill kit does the same. New annealed copper washers or not. Just a weep. Will try one there as well.
 
gortnipper said:
My Venhill kit does the same. New annealed copper washers or not. Just a weep. Will try one there as well.
Click to expand...
Yeah mine is a Venhill kit now you mention it, who I always use for cables and liked the look of it. But clearly the reduced effective sealing area of the banjos can be problematic. Mine was more than a weep and unusable. Plan A is the Dowty, plan B will be assembly without any oil flowing and degrease properly with a sealant.
 
USA source for Stat-O-Seals.

Aluminum Stat-O-Seal Sealing Washers | Pegasus Auto Racing Supplies

Aluminum Stat-O-Seals are more reliable than steel stat-o-seals. If the rubber inner seal fails to make contact at the port, the aluminum acts as a crush washer for a secure metal-to-metal seal.
www.pegasusautoracing.com www.pegasusautoracing.com

They list Dowty washers also, but I don't see a 5/16 - .31 listed.

Dowty Sealing Washer for BSP Ports - Pegasus Auto Racing Supplies

Dowty Sealing Washers are designed to seal male BSP fittings in flat-faced ports. If the female BSP port does not have a chamfer for an O-ring, use a Dowty washer.
www.pegasusautoracing.com www.pegasusautoracing.com

I have bought from them in the past. No issues, good vender.
 
It would be nice to understand the root cause of these Venhill leaks. Venhill make brake hose kits etc so must use and sell thousands of such banjos. Seems remarkable that the Norton kits leak so!

Its not because the bend of the banjo is making it foul the head and prevent the sealing face from sitting flat or something similar is it?
 
My top banjo is fine, it is just the bottom. My bet is the hole might not be perfectly perpendicular to the face.
 
Fast Eddie said:
It would be nice to understand the root cause of these Venhill leaks. Venhill make brake hose kits etc so must use and sell thousands of such banjos. Seems remarkable that the Norton kits leak so!

Its not because the bend of the banjo is making it foul the head and prevent the sealing face from sitting flat or something similar is it?
Click to expand...

That's exactly the problem, mine leaked at first till I had a real good luck, it's very easy to miss align the banjo bolt. Once I'd tuned it a bit all was good
 
Mine also only leaks from the bottom banjo. Gortnipper's explanation makes sense even if unproven? I assume trident Sam is referring to the top banjo fouling the head, not the issue here obviously.
I have a spare timing cover, maybe I'll experiment with it and the unmounted venhill kit over Christmas if I get bored! Got a '68 Triumph demanding my attention right now.
 
wavey_davey said:
Mine also only leaks from the bottom banjo. Gortnipper's explanation makes sense even if unproven? I assume trident Sam is referring to the top banjo fouling the head, not the issue here obviously.
I have a spare timing cover, maybe I'll experiment with it and the unmounted venhill kit over Christmas if I get bored! Got a '68 Triumph demanding my attention right now.
Click to expand...

Also make sure the surface is flat. Overtighening of the banjo bolt can pull the material so it's no longer flush.
 
swooshdave said:
McMaster Carr seals

I bet you can find the right size here. Not sure if these are too thick.
Click to expand...
They don't look the same. I ended up buying two assortment kits from Amazon. One was metric and the biggest was 34mm which is too small. The other (the one I linked here) is in inches, and the biggest one fit the oil tank. I have enough Dowtys now to last a while...
 
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