Any pointers for installing my EGT probe?

[MWilbur516]

Hey guys, I just got my EGT probe for my Livewire and hope to install tomorrow afternoon. If anyone has any pointers I would appreciate it. I plan on the typical drivers side rear of manifold location. The instructions say drill a 5/16 hole and tap with a 1/8npt. If theres anything I should be aware of so I don't screw this up, please let me know. Thanks for the info.

[Lilpooh]

Start by marking the spot with a pen/marker you want to drill, then use a pointed punch and hammer to dimple the mark. Next use a center drill to start a shallow hole so when you move up to the next drill size, the drill bit won't walk on you. Now instead of going right to the 5/16" drill, use a 3/16" drill for the pilot hole, now use the 5/16" drill.

I don't understand why they are using a 5/16" (.3125") drill for the 1/8"NPT. The 1/8NPT usually requires a "R" (.339") drill.

[smokeum99ta]

Another thing to do is use a magnet to catch the shavings to prevent them from get into the manifold. I center punched the spot I wanted the probe then placed a magnet around the hole I was gonna drill. You really dont have to worry metal getting into the manifold until you penetrate it. But once you do its nice to know shavings arent flying off inside of it.

[travisH3]

i drilled a pilot and then used size "R" drill bit, then tapped the hole. didnt use grease on the drill bit and didnt use a magnet and turned out perfect.

[mx730md]

i started out small and worked my way up proable threw 3 or 4 bits to minimize the size of the shavings. once i got it taped and all i took the shop vac and some duck tape to make an air tight seal to try and remove all the shavings still in the manafold.

DONT USE GREASE ON THE BIT OR THE TAP if you do you wont be able to remove the shavings front he manifold they will just stick

[NYC F-350]

I drilled it once, with the correct sized bit. Just before the drillbit breaks through the manifold, have someone start the truck, the exhaust will blow out the drill shavings and it won't heat up that fast to burn you. Just use common sense and protect yourself.

[MWilbur516]

Alright, It's in. Turned out great. I believe that was easier than the 6.4l banjo bolts (I didn't remove the radiator hose). I used just enough oil to lube the tap. Didn't have anyone to start the truck, but I did have a really good magnet that fit into the tapped hole and pulled all the metal (or at least I hope) out. Thanks for all the advice. Maybe this thread can help someone else too.