How do I make my own petcock?(without having it leak)

[thaglyde]

So, I have a 80 CB750c with a tank that looks like it should be there but the petckock i purchased for an 80cb750c did not work. I had 2 people recheck the numbers. I then thought to myself " The frame may say 1980 cb750c but that just may not be the tank that orgionally came on the bike" Not a problem. The only other petcock that the dealership had in mind was $149. I decided that this wasnt the petcock i wanted to buy. I then went to Lowes and bought some brass fittings and attempted to fab a petcock up. I found that bung was 1/2 inch flare fitting. However, transfering the 1/2 inch down to a 1/4 hose fitting and including a lever seems to be some work. Its a little ugly but i got it all to fit. Will i still get gas if this contraption hangs lower than the hole for the carb? Will the carbs suck the gas like a vacum or does it all work by gravity? Can I use pipe tape on all of the threads to prevent leakage or is there something else i need to use? Im at work now but Ill take pictures of all of this as soon as I get home.

 

[crazypj]

The tank is higher than carb so gravity still works.
use clear fuel line and you can see when water/dirt collects in the low area

 

[thaglyde]

what the best way to prevent the leakage? pipe tape around the threads? thread locker wont hold up to gas will it?

 

[Big R]

There are fuel resistant sealers in parts stores. More of a gasket maker/ silicone. Just check the fine print- it has to say fuel resistant.

Do you have a picture of the tank in question? Somebody here could probably identify it.

 

[thaglyde]

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