Bridgestone Motorcycle Parts Discussion Board

Bridgestone Tech Talk => 350 Talk => Topic started by: MitchB on April 12, 2018, 09:15:42 AM

Title: Oil tank outlet seal
Post by: MitchB on April 12, 2018, 09:15:42 AM

Howdy

My B-stone GTR project is nearing completion but I have one nagging issue...

I cannot get the outlet on the bottom of the oil tank to seal. The threaded flange/port is not cracked. I think I just need to have the correct seal on the bolt / banjo fitting. Is there a readily available sealing washer outside of hoping to find a 40 year old NOS sealing washer(s)..?

Title: Re: Oil tank outlet seal
Post by: hardy on April 12, 2018, 09:11:47 PM

I used bonded seals/ dowty seals on the banjo. Your local oring suppler should be able to assist.

They were M8 or M10, I don’t remember.

Title: Re: Oil tank outlet seal
Post by: davis on April 13, 2018, 07:47:32 PM

Good idea Hardy. So far the fibre washers I've used are holding well. Will take a hard look at any more tanks to make sure they have a smooth, flat surface before painting. I've also cured leaks from aluminum washers by sanding them smooth on both sides before installation, if used washers are necessary.

- Bob

Title: Re: Oil tank outlet seal
Post by: MitchB on April 26, 2018, 05:02:08 PM

Well, as turned out, it wasn’t the bolt. It was the sight window. The rubber was significantly degraded, and the leaking oil went to the lowest point - the bolt.
Replaced with NOS and all is dry.