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post #12 of (permalink) Old 05-10-2019, 10:17 PM Thread Starter
68WASAGOODYEAR
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Join Date: Jan 2018
Location: Greenville, SC
Posts: 239
 
I'm trying to drill and tap my intake for the 5/8 line from the heater core. I drilled the correct 45/64" pilot hole and I have a 1/2-14 NPT tap, but the pic shows the furthest I can get the damn thing to go. The black mark on the tap is how far it needs to go. Any tips here? I don't want to crack a $400 intake trying to do this. Thanks for any replies.

Edited to add: I have not been using any kind of lubricant or tap wrench. Wonder if these would help...
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Last edited by 68WASAGOODYEAR; 05-10-2019 at 11:32 PM.
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