I once fixed apparent piston slap or other internal noise by replacing the spring type timing belt tensioner on a Asian built car"Honda"
Noise could also be piston pins or related small end of the rod,or just plain the cam "Pistons are not entirely round when new" is worn down on the piston and ya got some slap now
That Honda just got it's cylinder head trued up,but what about the deck of the block? was it checked?
Although many will disagree,those perma torque type head gaskets really need retorquing after 1st heat cycle,when I build a engine using these type gaskets,I let them set for 30 minutes then loosen all heads bolts 1/4 turn and retorque
This is spoke about in the back tech sections of Felpro and other head gasket maufacturers,,although not a must,I think it is a good idea in my opinion
Noise could also be piston pins or related small end of the rod,or just plain the cam "Pistons are not entirely round when new" is worn down on the piston and ya got some slap now
That Honda just got it's cylinder head trued up,but what about the deck of the block? was it checked?
Although many will disagree,those perma torque type head gaskets really need retorquing after 1st heat cycle,when I build a engine using these type gaskets,I let them set for 30 minutes then loosen all heads bolts 1/4 turn and retorque
This is spoke about in the back tech sections of Felpro and other head gasket maufacturers,,although not a must,I think it is a good idea in my opinion