Heater hose outlet fittings
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Does anyone know the pipe thread size that you would tap the heater outlets on the water pump once you take the factory nipples off. I know I've heard of someone doing this but I cant find where. Thanks
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I remember someone posting the tap sizes recently. I know the one was 1/2, but i forget what the other was
Here is one option for moving the taps to the water pump. Go to the bottom of the page
http://forums.corvetteforum.com/c3-t...heir-c3-7.html
Here is one option for moving the taps to the water pump. Go to the bottom of the page
http://forums.corvetteforum.com/c3-t...heir-c3-7.html
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I remember someone posting the tap sizes recently. I know the one was 1/2, but i forget what the other was
Here is one option for moving the taps to the water pump. Go to the bottom of the page
http://forums.corvetteforum.com/c3-t...heir-c3-7.html
Here is one option for moving the taps to the water pump. Go to the bottom of the page
http://forums.corvetteforum.com/c3-t...heir-c3-7.html
Russ
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The pump outlet is 3/8 NPT, the return is 1/2" NPT.
Accidentally? Man, if only you knew how hard I had to work to get mine out... Totally destroyed both fittings and almost destroyed the freakin' pump! If you tap them, there are hose barbs available that will screw in. I'd bet that part is only available by buying the whole pump!
Russ
Accidentally? Man, if only you knew how hard I had to work to get mine out... Totally destroyed both fittings and almost destroyed the freakin' pump! If you tap them, there are hose barbs available that will screw in. I'd bet that part is only available by buying the whole pump!
Russ
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#9
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The two "nipples" on the pump are 5/8" outlet, 3/4" inlet (these are the heater hose sizes). So, tap the outlet 3/8NPT (.578 tap drill) for a finished thread OD of .675" and tap the inlet 1/2NPT (.703 tap drill) for a finished thread OD of .840".
#10
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on page 6 you can see some install pics of NPT fittings from www.hotrodlane.cc
http://www.hotrodlane.cc/PDFFILES/Bo...ck%20Vette.pdf
http://www.hotrodlane.cc/PDFFILES/Bo...ck%20Vette.pdf