Temp sending unit, HELP ME PLEASE!!!!! - Page 2 - JeepForum.com

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post #16 of 17 Old 08-18-2011, 02:08 PM
Alfons
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1992 YJ Wrangler 
 
Join Date: Jul 2005
Location: Ontario, Canada
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On those engines that have no hole tapped for the sender unit, the boss is still there and can be drilled and tapped. I did this on a 2005 4.0 engine block - the hole is for a 1/8" NPT thread. If you decide to drill and tap, be careful not to turn the tap too far into the hole while threading because you'll end up with a loose fit. This is tapered pipe thread, designed to give you a real tight fit when done right. When you drill the hole, it'll open up into the coolant cavity below the boss - any bits of metal that fall into this cavity that you can't retrieve with a magnet will disintegrate in the coolant eventually without harming the engine.

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post #17 of 17 Old 08-18-2011, 08:21 PM Thread Starter
PFCLinscomb
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1994 YJ Wrangler 
 
Join Date: May 2011
Location: Lafayette
Posts: 120
Quote:
Originally Posted by Alfons View Post
On those engines that have no hole tapped for the sender unit, the boss is still there and can be drilled and tapped. I did this on a 2005 4.0 engine block - the hole is for a 1/8" NPT thread. If you decide to drill and tap, be careful not to turn the tap too far into the hole while threading because you'll end up with a loose fit. This is tapered pipe thread, designed to give you a real tight fit when done right. When you drill the hole, it'll open up into the coolant cavity below the boss - any bits of metal that fall into this cavity that you can't retrieve with a magnet will disintegrate in the coolant eventually without harming the engine.
Nahhh I'm not comfortable with tapping a hole in the block.

But I'm going to just get the Hi-Flow thermostat housing Max suggested, much less work. lol

Times you kick yourself in your own ***: When that stupid Private wakes the whole platoon up by running through the bay screaming "Reveille,Reveille,Reveille!!!!!!!!!!!!!!!!!!! !" And your like "Who the hell put that guy on last fire guard" and then you realize.... You did -.-
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