valve rotators on a warm build?

[pishta]

If the spring bind specs out for the cam, is there any harm in running rotators on the exhaust side? I would have to buy 8 more if its a no-no. Cam is an LA Edel RPM with about a .510 lift and using RPM springs. Haven't mocked it up yet so no specs to tell you all. Thanks.

 

[dodge freak]

Yeah they are heavy and unneeded. Those went back to the lean burn days of 18 to 1 A/F ratios. No performance build uses rotators.

 

[moper]

They take off about .080 from the lift before coil bind, and add a bunch of spring pressure. Get 8 stock retaners and run them. Stock springs work with them... Nothing else should be forced to.

 

[66fs]

I have extra stock retainers you can have for shipping. Let me know

 

[66fs]

As I remember th valves are different for rotators, the groove is cut higher.

 

[moper]

Yeah, removing the rotators leaves it about .080 taller on the installed height IIRC. You can either use shims under the spring to get the tension right or just run them as they sit which is fine for most mild builds.

 

[pishta]

66FS, that is very generous of you. Let me PM you.