Author Topic: Bad oil leak  (Read 705 times)

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Offline Harry

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Bad oil leak
« 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 :)

Offline dcr

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Re: Bad oil leak
« Reply #1 on: September 07, 2017, 01:01:00 PM »
Harry - where exactly is the oil coming out of the motor? Bottom or side cover?

Dan
1966 175 DT and 1968 350 GTR

Offline mrjones

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Re: Bad oil leak
« Reply #2 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?

Offline OldSwartout

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Re: Bad oil leak
« Reply #3 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.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline coxy

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Re: Bad oil leak
« Reply #4 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

Offline OldSwartout

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Re: Bad oil leak
« Reply #5 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.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline Harry

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Re: Bad oil leak
« Reply #6 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

Offline hardy

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Re: Bad oil leak
« Reply #7 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

Offline Harry

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Re: Bad oil leak
« Reply #8 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

Offline grundlegrabber

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Re: Bad oil leak
« Reply #9 on: November 07, 2017, 09:47:48 PM »
Who is this guy in Trevose? Just curious because I'm not far from there.

Offline Harry

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Re: Bad oil leak
« Reply #10 on: December 02, 2017, 10:01:10 AM »
The guy in Trevose is Steve Bromley. His business phone is 215-357-1534.  The business name is Bromley Motorcycle Sales Inc. at 635 Somers Ave., Trevose, Pa. 19053.  He also has some nos parts for Bridgestone bikes.  Hope this helps.

 


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