A little background on my project. EF hatch, D16z6, 75.5mm Vitaras, Eagle H beams, Zex 59300 cam, upgraded valve springs(still dont have any), just wondering if stock retainers and keepers are fine in the head? I know they sell aftermarket for both, but is there really a pro and con for keeping stock? I am keeping stock valves, so.

Right now the EF has a NX nitrous kit, but I am gonna do a turbo setup here within the next couple months after the motor is in.

So my question is can I run stock valve spring retainers and keepers?

I tried to search but it didnt work too well.

 

Also, has anyone run stock valve springs with a Zex 59300?

 

No one knows anything about this, wheres all the help that was back here in 02? lol