-Turbo- Posted November 26, 2002 Report Share Posted November 26, 2002 just wondering, if you get a 350 ported to match the HP of a 404, does this mean they are basically the same? and can a 404 compare to powervalve cylinders? While I have no experience owning a 350 dragg motor nor a dyno, I would think that they would have a different power curve even if they did have the same HP rating. More low end on the 404 I would think. I don't think you can compair a 404 to a PV motor, not in price anyhow along with total HP. It seems that all the really fast bikes are the big mono block PV motors but that crap don't come cheap and it sure does not look stock, can't hide the PV's. I hope I didn't step out of bounds here. Just posting my thoughts. Quote Link to comment Share on other sites More sharing options...
QuiCk Posted November 26, 2002 Report Share Posted November 26, 2002 A lot of fast bike run stock cylinders....a lot run monoblocks, some run 404s...all depends on your idea of fast! Quote Link to comment Share on other sites More sharing options...
CP5899 Posted November 26, 2002 Report Share Posted November 26, 2002 I have forgotten but aren't the power valves for low rpm tq. If so, how would they have any benefit on a drag motor since you never see low rpms. I read on planet sand that some big time builder from england welds up the power valves on his rd/rz or which ever cylinders had the PV. Someone asked why not just start with banshee cylinders and he said they are harder to come by in england and the rd or rz are more availible. This guy is supposed to make (from what I read and everone seemed to believe it) 135hp at the crank on banshee style cylinders. just wondering. Later Craig Quote Link to comment Share on other sites More sharing options...
QuiCk Posted November 26, 2002 Report Share Posted November 26, 2002 Craig.... You are correct about the powervalve being used on the lowend, it really has no function after 6500RPM. That doesnt mean a powervalve motor cant be fast....as there are some. The builder you are referring to is Sainty, he has also posted here. He is the real deal. The reason he and others dont use the powervalves is simple....their bike is never under 6500 rpm! Quote Link to comment Share on other sites More sharing options...
CP5899 Posted November 27, 2002 Report Share Posted November 27, 2002 Thats what I thought. I m sure they could be just as fast as a non pv motor. I think sometimes people think if they get pv cylinder that they will be faster in a drag. Just clearing it up that they are a bottom end thing. Later Craig Quote Link to comment Share on other sites More sharing options...
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