Handy Don 12,237 #76 Posted March 31, 2022 22 minutes ago, WHX?? said: Ok up to speed here Don and wished I'd been sooner. I have a 1" NPT tap I coulda loaned ya. Not to be debby downer on the JB but I tried it on a exhaust once and it didn't hold up to the heat. Actually melted off but maybe your using a different type of JB? Ok just caught that. Let us know how it shakes. I figured two-way postage on a tap woulda been most of the cost of the purchase so I didn't ask about any long-distance loans--but I appreciate the offer! I used the Steel JB which is supposed to hold up to 600º F and, from what I could find in my research, the block temp should stay below 500º (the exhaust gas gets hotter but apparently the block dissipates the heat). I know we've all seen glowing exhaust pipes hotter than 600º on a lean running engines but these don't have a heat sink. If it does fail, I'll at least know how to redo the sequence using one of the more exotic "extreme heat" epoxies! 3 1 Share this post Link to post Share on other sites
WHX?? 48,833 #77 Posted March 31, 2022 11 minutes ago, squonk said: Put a 1" conduit lock nut against the block to help secure the nipple. Make sure it's a steel one the pot metal ones will melt.... 11 minutes ago, squonk said: They make hi heat JB weld. This I did not know thanks Squonky.... Yeah best to have that tap for future anyway Don 2 Share this post Link to post Share on other sites
