Fibre washers on fuel banjos

[JimH]

Hi guys checking parts lists and it mentions fibre washers for the fuel banjos.Having had problems using them on Triumph bonneville fuel taps in the past ,I have used copper and sometimes dowty washers in the past.
Your thoughts much appreciated.
Jim

[rfs1957]

Hi Jim,

There is another Topic covering these, I’ll try and find it for you, unless someone else beats me to it, as these washers are surprisingly difficult to get to seal, and have to be made to very tight tolerances if they are to have any chance of working.

The Dowty type, as I understand them, would have no chance of working as their specificity regards the way they grip the bolt shank.

The leaks in the banjo context are from the peripheries.

The ones under the bolt heads are constrained in all four directions, sitting as they do in a rebate, and the dimensions are super critical.

I believe copper would be worse than useless.

Always worth repeating over and over in any context regarding the banjo bolts, the special cutaway washers under the float-chamber cap banjos are a VITAL part of the float-level dynamics, anyone in doubt should take 5 minutes to do the physics.

[JimH]

Stick with the original then

[mach2andy]

Hi Jim
This thread ran last year. One thing you can try is soaking the fibre washers in engine oil for a couple of days. That can help apparently?

http://forum.etypeuk.com/viewtopic.php? ... lt+sealing


Kind regards
Andy