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 Help with plumbing fittings for auto project
Author: captainjack (NJ)

I have to replace the exhaust manifold on my car which requires that the air injection tube, on an adjoining part, be disconnected for clearance--the fitting is in an awkward position and won't budge after penetrating solvent and heating with a torch.The tube is steel, 7/8 outside diameter, and can be readily cut. Is there some type of plumbing fitting that could be used to reconnect the cut tube? Would brass on steel be a problem or is there a steel fitting I could use?
Any information or ideas will be appreciated.

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 Re: Help with plumbing fittings for auto project
Author: North Carolina Plumber (NC)

You might be able to use a 3/4" brass compression fitting.

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 Re: Help with plumbing fittings for auto project
Author: packy

can't use a 7/8 ID hose?

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 Re: Help with plumbing fittings for auto project
Author: captainjack (NJ)

The tube, connected to the exhaust manifold, gets very hot. When the car is running the air being pumped through the tube moderates the temperature. When the car is shut off heat soaks back from the manifold/catalytic converter and would probably melt rubber or silicone hose.

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 Re: Help with plumbing fittings for auto project
Author: LemonPlumber (FL)

old school flare connections work well .Though tempering the steel adjoined to flare heated can be tricky.Compression is not vibration friendly.

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