Did the drilling today. Used the engine running and grease on the bits routine. Do wear a face shield when you do this. Hoot, thanks for you article. Your suggestion to use the "R" bit for 1/8 NPT was appreciated.
I thought this might be a good place to ask the following question. I have a short Isspro probe installed per the directions above. The shop that tapped it for me did it on a slight downward angle, which put the probe at an angle that made it a little on the long side to fit properly. I ended up installing a coupler to extend the fitting out a half inch so the probe would fit. Are the following temps normal at 50 degrees ambient temperature?
Idle in driveway: 270-280
Coasting down hill: 125-150
Hard acceleration up hill: 900
All these are plus or minus. Just want to see if the extra coupler is dragging the temp at the sensor down somewhat.
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!