does anyone know if you can use the kibble white springs with stock shims and retainers?
I agree with two many xs1s about proper intalation, and I just comented in another thread about buying a tool to meashure this INSTALED preshure and not just the hieghth,
I disagree that the stock springs are garbage even new, they lasted in motors that have run 30 years, and I personaly have rode the shit out of some to the limits of the engine and never had one fail, if they cant achive higher rpms that you want then that's because they wherent desighned in the first place for it,
NOTE: lol this is the first time I have disagreed about anything on this forum and I usualy don't argue with anyone, you learn a lot more from listening than from speeking IMHO ….but that's my personal opinion about factory springs, But don't get me wrong Im looking into better than factory springs for my latest 750 build with an xs1 cam, or I might just use a set of these xs1 springs I have, (yet to be detirmened if there any different from 447 spings (see my thread xs1 spings maybe))