knock,knock who's there?

B

bwanacandu

Member
#1
#1
okay, i'm stumped. bought a dupor, flat top piston, installed my used arc rod w/new bearing, fly wheel, 18lb springs,jet,etc. when i spin the engine by hand(without the plug,of course), i have a knock. pulled the head- off-no knock. it appears to be coming from the vacinity of the cam,i think. any thoughts on this?could it be(hopefully) lash between cam gear and crank gear? help a dummy out,huh?
 
C

chazdaddy

New Member
#3
#3
I don't know, but spinning by hand could be hearing rod touching the block somewhere. Maybe need to do a little grinding on the block. :shrug:
 
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