Newbie 318 piston question
Surprise > Look what I found on a stock 318 roller engine with the bore scope.
Just checking things over as it has great power, get up and go.
It also has the 1406 4 bbl and the hot fire E-Core coil ignition on top of it being 9.2:1 302 headed original engine.
324 cubic inch cramming into the 318 combustion chamber raising the compression ratio to 9.5:1 with the .040 over bore.
Good way to make more power on the 318s.
By the way, the hot fire ignition has burnt back the carbon deposits on the piston tops over the last year, 90,000 mile engine. Now I can read that it has a .040 over bore, leaving carbon in the marking spots yet so that I can still read it with the bore scope.
Exhaust is just as clean as that spark plug.
When it was the smog running engine, everything was burning black > piston tops, plugs, out the tailpipe too.
edit:
This last picture is after I set the timing back to 8° BTDC because the hot fire ignition is burning so fast that it is advancing the ignition by 4° putting it right at the factory setting of 12° BTDC.
Amazing.....
☆☆☆☆☆
Surprise > Look what I found on a stock 318 roller engine with the bore scope.
Just checking things over as it has great power, get up and go.
It also has the 1406 4 bbl and the hot fire E-Core coil ignition on top of it being 9.2:1 302 headed original engine.
324 cubic inch cramming into the 318 combustion chamber raising the compression ratio to 9.5:1 with the .040 over bore.
Good way to make more power on the 318s.
By the way, the hot fire ignition has burnt back the carbon deposits on the piston tops over the last year, 90,000 mile engine. Now I can read that it has a .040 over bore, leaving carbon in the marking spots yet so that I can still read it with the bore scope.
Exhaust is just as clean as that spark plug.
When it was the smog running engine, everything was burning black > piston tops, plugs, out the tailpipe too.
edit:
This last picture is after I set the timing back to 8° BTDC because the hot fire ignition is burning so fast that it is advancing the ignition by 4° putting it right at the factory setting of 12° BTDC.
Amazing.....
☆☆☆☆☆