660 gas manifold

[1974vette]

I’m getting ready to change out a cracked/busted exhaust manifold on my 660 gas tractor. Do you put any dope on the exhaust pipe threads? Any other pointers would be appreciated. Thanks
Joel

 

[used red MN]

Do you put any dope on the exhaust pipe threads?

I would use anti-seize on the pipe threads. Not really in hopes of it allowing removal later rather to allow you to tighten it as much as possible to help the threads engage as much as they allow. And may be obvious, the intake and exhaust should be assembled together just snug and then tightened after the bolts/studs that hold it to the head are tight.

 

[1974vette]

Thank you

 

[urbancase]

I done the same as what used red man said, I had to take one out a few years last and was easy to get out, now one 10 years or longer I do not know.

 

[1974vette]

The ( bolts that hold the 2 pieces together all broke and needed to be drilled etc. should I take the flapper out? Is it really needed I don’t use in the winter or cold weather

 

[Powered By IH]

Leave it in. It's there for running in colder weather in all-seasons, not just winter.

Besides, if the tractor ever gets sold the next owner may want that flapper in. It could potentially decrease the value of the tractor too since it wouldn't run well when it's cold.

 

[1974vette]

I think I will leave it in and get a new spring since it does still work and is not froze up.

 

[Powered By IH]

I think I will leave it in and get a new spring since it does still work and is not froze up.

Good choice, especially since it still works.

 

[Absent Minded Farmer]

I think I will leave it in and get a new spring since it does still work and is not froze up.

Definitely the way to go. Those sixes are cold blooded year 'round.

Mike