MSefi.com read only forum (Jan.15,2018)

On a cold start (like 20F) my knocks sense sees a knock too and flashes. It's OK after warmup. I'm guessing it's caused by the clearances in the engine being different than when at operating temperature. It hasn't blown up yet anyway.

Here is a pic of steel bungs being brazed into a stock cast iron manifold.
http://www.gmcmhphotos.com/photos/showp ... hoto=23797
Most of the project pics are here
http://www.gmcmhphotos.com/photos/showg ... ppuser=311

HTH
Wally Anderson