Just got my car resurected from a head job. retorqued the heads.got much improved performance... now noticing a puttering noise not unlike farting when accelerating. no noticeable smoke or fluid leaks. any ideas?

Exhaust leak, maybe? New exhaust gaskets and snuggley bolted down?

Could be. I wonder what would explain why it only does it noticeably under load.

Very often under load and more noticeable when just started? (cold?)

exhaust header leak for sure. you could recognize an ea82 miles away by how it sounds.

 

be sure to install new studs with new gaskets. the metal backed graphite faced gaskets are the ones to have.

 

Have your parts store counter person look in the BOSAL catalog for your part.

 

also check the fittings for the egr pipe on the passenger side head as well, and on the intake end of the egr pipe.

Mine used to do it only under load. Now it does it all the time. Gonna fix it one of these days...