top dead center

[chadillac]

what could go wroung if the valve lash is not set when at top dead center

 

[jesse8931]

valve smacking the piston

 

[briggs_boy]

valve smacking the piston

not enough lift for this to happen with a stock engine. would have to be heavily modified.

it will run right if the lash is set wrong.

set it at .002 in .003 ex

set it at tdc



if you want to be sure it perfect, u can set the intake when the exhaust is open and the exhaust when the intake is open. that way you are sure its on the base circle of the cam.

but setting it a tdc works just fine

:thumbsup:

 

[chadillac]

not enough lift for this to happen with a stock engine. would have to be heavily modified.

it will run right if the lash is set wrong.

set it at .002 in .003 ex

set it at tdc



if you want to be sure it perfect, u can set the intake when the exhaust is open and the exhaust when the intake is open. that way you are sure its on the base circle of the cam.

but setting it a tdc works just fine

:thumbsup:

thank you very much great stuff. nice to have a pro a couple of key strokes away.:smile:

 

[milo raptors]

thank you very much great stuff. nice to have a pro a couple of key strokes away.:smile:

:thumbsup::thumbsup: i know there great arnt they

 

[jesse8931]

not enough lift for this to happen with a stock engine. would have to be heavily modified.

it will run right if the lash is set wrong.

set it at .002 in .003 ex

set it at tdc



if you want to be sure it perfect, u can set the intake when the exhaust is open and the exhaust when the intake is open. that way you are sure its on the base circle of the cam.

but setting it a tdc works just fine

:thumbsup:

Oh ok thats good to know thanks.

 

[65ShelbyClone]

If the lash is set when the engine is not at TDC, then the lash will likely be too wide when the engine is at TDC and the valves will open less than they normally would....meaning that the piston hitting the valves would be even less likely than if the valves were properly set.