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Petcock bolts

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

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Ok I have a 77 gs 750. Every year I have to take the petcock off of the tank and reseal the bolts that hold it on! Whats the deal how does the factory seal the bolts that go into the tank and therefore into the gas. Im sure there not the original bolts that are there now but damn what a retarded design :evil: !!!!!! I dont come up with anything special on the M/F either like o rings and such.. anyone have any ideas or suggestions im tired of this. :(
 
YUP!!!! as from what i can see theres nothing that seals the bolts threads or heads from the gas inside the tank.. without sealer the gas just leaks right past.
 
I can only think that it is a bad petcock seal itself that is bad instaed of teh bolts, but the only thing I can think of to use to 'seal' tehm in some permatex H-3 or the cheaper version, Indianhead gasket sealant. smear this around teh threds and allow to dry overnight (on an empty tank.). :twisted:
 
permatex makes some stuff that is good for those things. I wonder if the marine stuff ths earl recomended for fixing my crankcase oil leak will work there also.
 
Scotty, I have never used the Life Seal for a gas tank fitting. Its a compound of silicone and polyurethane. I think it would work better than most things you could use, but I cant guarantee it. I just use a gasket on my petcock and have had no leak problems....yet :-)

Earl

slopoke said:
permatex makes some stuff that is good for those things. I wonder if the marine stuff ths earl recomended for fixing my crankcase oil leak will work there also.
Click to expand...
 
earlfor said:
Scotty, I have never used the Life Seal for a gas tank fitting. Its a compound of silicone and polyurethane. I think it would work better than most things you could use, but I cant guarantee it. I just use a gasket on my petcock and have had no leak problems....yet :-)

Earl

slopoke said:
permatex makes some stuff that is good for those things. I wonder if the marine stuff ths earl recomended for fixing my crankcase oil leak will work there also.
Click to expand...
Click to expand...
I have permatex black on my petcock
 
Have you replaced the bolts. Threads may be worn enough to allow a leak.
Or the threads in the tank may be wore. Don't know if threads that shallow be helicoiled or not?
But that may be what's allowing the fuel to get in that otherwise sealed off area, inside the perimeter of the o-ring.
 
The best thing iv found to seal anything gas related is locktite PST. The actual question was are--- do the bolts that hold the petcock on the tank have any provisions for sealing like o rings or the such. the only sealing ring i see is the attached back 2 D shaped ring that goes between the tank and the p/c . Yes the bolts have ben replaced wich is the reason i need this info. right now the bolts are socket head allen bolts I know there not stock. Hopefully yall will stick with me as to solve this problem.
 
Try wrapping the threads with telflon tape like plumbers use. Silicon type(RTV) products will break down when exposed to gasoline.
 
moto_dan said:
Try wrapping the threads with telflon tape like plumbers use. Silicon type(RTV) products will break down when exposed to gasoline.
Click to expand...
I have found that the teflon paste works much better for plumbing than the teflon tape (originally discovered this from a plumbing website).....I haven't tried teflon products on fuel fittings, though.

BTW, re: Scotty's post:
I have permatex black on my petcock
Click to expand...
Scotty, we really don't want to know about your perverse usage of cosmetics. :wink: :lol:
 
:) The head of the bolts should have fiber washers on them to seal. Mine do and it has never leaked a drop. :)
 
AAAAAHHHHHHHHHH!!! 8O :mrgreen: that last post is the one that i was looking for. now I have to find the right bolts and these fiber washers.. or make them thanks!!!! P.S. gas eats teflon tape--- allready tried it!!! turns it into mush but thanks anyway
 
My '79 GS1000 used crush washers on the bolts,I believe they were made of copper. Never had a problem. I've got a Pingel now,much better fuel valve.
 
MR.ED said:
AAAAAHHHHHHHHHH!!! 8O :mrgreen: that last post is the one that i was looking for. now I have to find the right bolts and these fiber washers.. or make them thanks!!!! P.S. gas eats teflon tape--- allready tried it!!! turns it into mush but thanks anyway
Click to expand...
On the teflon tape thing. Lots of us use it on our fuel valves and have no problems. Perhaps we all should discuss this tape item. I thought that the pingel company had teflon tape listed as one of the items necessary to use in the valve installation.????
 
Yeahh we should discuss this teflon tape thing. like what kind where we got it and what we used it on! Im very interested in this!!!!! :?: Does anyone know if i can get those washers from suzuki??? :?:
 
I think it's supposed to work like this.
The O-ring that is between the petcock and tank is to prevent the leak at the tank. And there is supposed to be copper-sealing washers between the bolt head and the petcock to prevent any gas leaking out from around the bolt.

Roman
 
Mr. Ed if they are the same size as on an 83 gs1100GK the part # for the seals is 09168-06023 at http://www.ronayers.com/main.cfm they are $.75 each. The bolts are part #09128-06057 and are $.59 ea. I know because I just ordered them for my bike. Oh and if you look on bike bandit they are a different part # but these are the superseeded #'s
 
petcock bolt leaks

petcock bolt leaks

I just got my 79gs750e running after its 12 year slumber (thanks earlfor!);
One of my projects was replacing the PETCOCK BOLT GASKETS. Got the pair for 99 cents. no mo leeks! They were gotten at the local suzuki shop as an oem part from their fiche set. I dont bet very often, but I will bet your issue would be resolved if you do what I did. :)
 
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