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Old May 19, 2012 | 07:28 PM
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Heater Hose Question

Im running my heater hoses, braided and I want to use AN hose ends. I really dont want to use hose clamps. For the nipples that come out of the block and water pump, are they threaded in or pressed in? If theyre threaded in then Im guessing I can use channel locks or vise grips to take them out since theres no way to use a wrench for them.
 
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Old May 19, 2012 | 07:38 PM
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The nipples for the block and WP are threaded standard NPT. They can be a bear to get out if they have been in for a while and will likley get destroyed in the process if that matters.

For really old ones, heat the nipple to a red heat then touch it with parrefin or a candle just above the threads. The heat will break the bond of rust and the wax will flow in an act as a lubricant.
 
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Old May 19, 2012 | 08:06 PM
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Perfect thanks for the help. I already have some AN fittings that are
10AN to 1/2" npt. Do you know the thread size, I was assuming they were 1/2" npt.
 
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Old May 19, 2012 | 09:04 PM
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What motor ? any 351M-400 they are pressed in tubing.
 
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Old May 19, 2012 | 09:13 PM
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Wow Im an idiot. I forgot to mention 351m. I had a feeling pressed. My dad convinced me they were threaded I already mangled the one on the block. Now I have no idea what to do.
 
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Old May 20, 2012 | 06:16 PM
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Grind off the mangled portion then use a screw extractor on it
 
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Old May 20, 2012 | 08:49 PM
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Got it figured out. Nocked the nipple out and threaded it out to 3/8 npt. Just need to get some fittings. Thanks for the help.
 
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