Simple question but I don't know the answer
 

Should we use anything "thread-loc" on the exhaust manifold bolts when installing the exhaust manifold back onto the block??

It's a two way street. Sometimes the gaskets need to be retorqued. Sometimes you nne the thread-loc to keep the bolts from backing out. Look at it this way...which ever way you do it will be wrong. Does that help? :D

They're usually impossible to get off even without thread lock. If you are using lock washers, dont bother with the thread lock.

just the opposite...anti-seize...but the above is a correct statement...be sure to check the torques.

Iron or Aluminum heads??

Use Antisieze if aluminum. We don't use anything if they are iron. Personal preference I guess.

I do use locktite other places on the block though....

I use anti-seize on the exhaust manifold bolt threads, but I use lock-washers too. They are usually quite easy to remove, but don`t back off either.............

I anti-seize so I can get them off next time. :D Usually check to make sure they are tight a couple times when I install new gaskets. Once they take a set I have never had a problem with bolts getting loose or coming out. Just my .02.

Mercury offers a "anti corrosion grease"that doesn't have such a high aluminum & copper content in it. If you are in a saltwater enviroment,regular antisieze can promote corrosion because of its additives. Just a recomendation.

LMAO a simple question:eureka:

Poor guy gets 10 different answers:D

haha good one Scott. I never use anything on the bolts holding my Gils on , but then again, I seem to have them off way to frequently anyways. Dont use locktite, dont use neversieze unless you can check the torque reqularily. My $.02.