[Tryin2MakeIt]

so im learning about this motor buildings stuff. i have read articles but i would like to know where i can find information on roller rockers. i know i need to purchase a good set but i dont know what specs i need or how to find that out. any help is appreciated

 

[327NUT]

Just like everything else about hipo engines....you can find info on the enet, just punch up roller rockers.

 

[Tryin2MakeIt]

google

OK so i googled the word roller rockers and came back with a bunch of junk. nothing that helped me at all. can anyone explain the measurments on them (1.5,1.6,1.7) and what is better?

 

[xntrik]

Stay with stock ratios generally.

The ratio is the multiplication of the cam lobe lift to the actual valve lift.

1.5 = the valve opens 1.5 times as far as the cam lobe moves the lifter and pushrod. Like a teeter-totter with one end longer than the other. If the cam lobe moves .400" then the valve opens .600" = this called "lift".

Roller rockers can have a roller tip (only) touching the valve stem, OR also have the pivot fulcrum with rollers in there, called "full roller rockers". :thumbup: Generally stock rockers have neither.