maddmatt02
04-19-2008, 11:03 PM
I was looking today at performance parts for the 450r, and the hot cams stage 3 cam shows .409 lift on the intake side, and claims to use the factory valve springs.
I was on the web cams site, and the cam that has a spec of .400 intake valve lift recommends a performance valve spring kit, and the cam that has a intake lift of .415 says requires a spring kit?
I started thinking that maybe it had something to do with the duration, like the hot cams valves were open longer and in turn set the valve back down slower/over a longer period of time and would be less prone to valve float, but looking at the specs, the web cams have a longer duration?
is web being overly cautious, or is hotcams being a little bold in saying its fine with stock springs?
is the stock setup prone to failure?
would it be safe to run stock springs? i was figuring on running a performance spring kit anyways, looking at the kibblewhite kit.
is there another manufacturer youd reccomend and at a cheaper price and still good quality?
thanks
and no i dont have a 450r right now but I better within the next 3 months.
I was on the web cams site, and the cam that has a spec of .400 intake valve lift recommends a performance valve spring kit, and the cam that has a intake lift of .415 says requires a spring kit?
I started thinking that maybe it had something to do with the duration, like the hot cams valves were open longer and in turn set the valve back down slower/over a longer period of time and would be less prone to valve float, but looking at the specs, the web cams have a longer duration?
is web being overly cautious, or is hotcams being a little bold in saying its fine with stock springs?
is the stock setup prone to failure?
would it be safe to run stock springs? i was figuring on running a performance spring kit anyways, looking at the kibblewhite kit.
is there another manufacturer youd reccomend and at a cheaper price and still good quality?
thanks
and no i dont have a 450r right now but I better within the next 3 months.