Quote Originally Posted by Dave Severson View Post
Just out of curiosity, Dave.... Gave you tried taking the drive belts off to make sure it's not some funny noise in the accessories that is transferring into the engine?????


PS--Please don't ask how I learned to check noises this way.......
Dave - when I changed the alt bracket this past winter, I did check to see if the water pump(a $tewart) and alternator were smooth and they are plus put $32 worth of new Gates/Napa belts on at the same time

What I did today was to reinstall my 1.7 roller rockers, go through the Crane sequence of adjusting the lifter preload which is putting the lifters on the camshaft base circle then torquing to 20 lb ft after first contact(a royal PITA project). I also checked the actual amount of preload and while it was a quick and dirty method, am at about the optimum of +/- .030-.040 (.010-.060). It seems to be pretty quiet unless the 900 rpm idle drops to almost stall speed, then the engine goes into what sounds like a heavy ping/detonation. I played with the carb - and while it had a minor internal clean out, the right idle screw does nothing. It's almost like a vacuum leak is leaning the mixture to detonation. Since it's raining today, wasn't going to take it for a ride, but it appears like I also have a carb problem - so am about to 'donate' a few more bucks to Summit or Auto Zone and will rebuild my spare E-brock 1405.

More fun coming tomorrow

Pat, that PCV is a fancy Billet Specialties with brand new innards last fall, and doesn't seem to rattle nor did the last.

And yes, Dave, I sure do know what noises a drive belt and accessories can make

Dang this is a fun hobby (usually)