I have an Autometer Z Series pyro guage. The kit came with installation hardware for all three types of installs. I chose to do mine "a la Hoot" and drilled the exhaust manifold. Not too hard, I did the drilling with engine runnning and got covered in drill shavings
I shut the engine off to do the tapping and intial install of fitting and probe. So here are the questions.
1. Do you tighten the fittings with the engine cold or running? Will doing one or the other cause the exhaust manifold to crack?
2. How much do you tighten the fittings? Snug with a small wrench or get out the 1/2 drive and cheater bar?
3. I used an anti sieze lube made for exhaust parts and with a tolerance of 2,000 F. Was this a wise choice?
4. Do I have to check the fittings for "looseness" at any specified interval?
Okay, my last question will be for egt temps themselves. I have read that anything from 900 to 1,500 F is bad. What should I consider the "safe" redline for this setup? Remember I also use the truck to tow an RV.
Thanks!

1. Do you tighten the fittings with the engine cold or running? Will doing one or the other cause the exhaust manifold to crack?
2. How much do you tighten the fittings? Snug with a small wrench or get out the 1/2 drive and cheater bar?
3. I used an anti sieze lube made for exhaust parts and with a tolerance of 2,000 F. Was this a wise choice?
4. Do I have to check the fittings for "looseness" at any specified interval?
Okay, my last question will be for egt temps themselves. I have read that anything from 900 to 1,500 F is bad. What should I consider the "safe" redline for this setup? Remember I also use the truck to tow an RV.
Thanks!
