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Old 03-08-2010, 09:16 PM
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2door 2door is offline
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Location: Littleton, Colorado
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Default Re: 90 degree petcock

Here's a little information for you. The typical fuel tank petcock is not a pipe thread. That is, it is not a tapered thread but a metric machine thread which relies on a gasket to seal. I've done several tanks this way and never had a leak: Use a 1/8" pipe tap to rethread the tank then you can easily locate a petcock at almost any hardware store. I run the tap in carefully and not too deep. It will rethread the tank so it will accept any NPT (National Pipe Thread) 1/8" pipe fitting. Use teflon tape or a thread sealer compatible with gasoline to assure a leak proof installation. Good luck.
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