Bridgestone Motorcycle Parts Discussion Board

Bridgestone Tech Talk => 350 Talk => Topic started by: Harry on September 06, 2017, 12:38:58 PM

Title: Bad oil leak
Post by: Harry on September 06, 2017, 12:38:58 PM
Hi guys.  I'm getting a bad oil leak from the right side of my 359 GTR.  What could cause this to happen?  I can still run it if I keep replacing the oil that is lost.  Is this a major problem?  Thanks for any info.  Harry :)
Title: Re: Bad oil leak
Post by: dcr on September 07, 2017, 01:01:00 PM
Harry - where exactly is the oil coming out of the motor? Bottom or side cover?

Dan
Title: Re: Bad oil leak
Post by: mrjones on October 08, 2017, 05:34:43 AM
 Harry seems to have vanished!  i was going to ask a similar question but i do know where my oil leak is coming from , i  have a leak from the two stroke oil tank banjo bolt ,its fully tightened and i have put silicone on the outside of it but it still leaks only a small amount though, anyone got any tips?
Title: Re: Bad oil leak
Post by: OldSwartout on October 08, 2017, 10:30:44 AM
It's pretty straightforward. The banjo can leak either from the fiber gaskets (one above, one below the banjo) or from the banjo itself. The aluminum banjos on the oil tank and the oil pump can crack over the years.  Of course the rubber hose itself could be cracked or split where it attaches to the banjo.  I noticed a couple days ago mine is leaking a little bit from the banjo area also. 

There is a screen attached to the banjo bolt that you have to deal with when you remove the bolt, so be prepared so you don't damage the screen taking it apart.
Title: Re: Bad oil leak
Post by: coxy on October 13, 2017, 03:34:34 AM
it also can leak if the mounting bolt for the oil tank has been over tightened and the tank itself is cracked around the bolt
Title: Re: Bad oil leak
Post by: OldSwartout on October 13, 2017, 08:04:34 AM
it also can leak if the mounting bolt for the oil tank has been over tightened and the tank itself is cracked around the bolt

Coxy's right, and it will run down the back and drip off the banjo bolt, making it look like the banjo is leaking.
Title: Re: Bad oil leak
Post by: Harry on October 22, 2017, 08:53:07 PM
Thanks guys for your info. l I have  been out of town and out of touch with all of you.  SORRY.  I'll try the fix and let you all know the results.  Thanks again,  Harry
Title: Re: Bad oil leak
Post by: hardy on October 23, 2017, 07:46:09 AM
I know this is going a bit off topic, but to solve my oil tank leaking banjo, I got rid of the old crusty fibre washers and used bonded seals. These are made for hydraulic fittings, so Lucky I work for a hydraulic company  ;D
Title: Re: Bad oil leak
Post by: Harry on November 04, 2017, 04:39:25 PM
Thanks again to all of you.  I'm sending the bike to the guy in Trevose, Pa this winter and let him try some of your suggestions.  He is also rebuilding my front forks.  Harry
Title: Re: Bad oil leak
Post by: grundlegrabber on November 07, 2017, 09:47:48 PM
Who is this guy in Trevose? Just curious because I'm not far from there.