Tom, As susspected the front cycl. 640 sq. base -which had a helicoil insert (short bolt not used accidentally in past- not me). Does leak around the treaded insert into barrel. Cork 1 7/16" with inner tube gasket, football air pump needle inserted through center. rivet nasty leak. All round failure. Rear barrel test good.
So now my manifold/nuts is on it's way to you, and I'm looking for solutions to fix threaded insert. 1. remove barrel and silver solder it? 2. leave barrel on and use some sort of sealant? Figure sealant OK as this is low pressure app. What type?
Original nuts in great shape are being used. Threaded insert ID has not been opened up. stock.
So now my manifold/nuts is on it's way to you, and I'm looking for solutions to fix threaded insert. 1. remove barrel and silver solder it? 2. leave barrel on and use some sort of sealant? Figure sealant OK as this is low pressure app. What type?
Original nuts in great shape are being used. Threaded insert ID has not been opened up. stock.
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