hi, the inlet valve starts to open 70 degrees before top dead center and closes 26 degrees after top dead center. the exhaust opens 26 degrees before bottom dead center and closes 68 degrees after bottom dead center.
the 276 and 274 figures are advertised duration , this figure is taken from as soon as the valve leaves the seat. the figure 216 at 50 thou is taken from when the valve has been open 50 thousandths of a inch from the seat. some people say this reading at 50 thou is a more accurate rendition of the cam performance wise. not saying exactly but it could be a mild to warm camshaft. to find the lift, (very close any way) get a verniers measure from bottom of one lobe to the top of the same lobe, then measure across the widest part of the lobe. take one measure ment away from the other , then multiply the difference by the rocker arm ratio. mark k ----- Original Message ----- From: "Ryan Ottens" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 20, 2002 9:19 PM Subject: cam specs > hey list, > i just bought a lumpy cam for $30 the other day. > now i finally got the specs back of it today. > but got no fricken idea on what most of them mean. > all i know is the degree of the cam vaguely. > this is what ive got > > timing - > open: 7026 > close: 2668 > > duration - > Inlet: 274 (the degree of the cam?) > Exhaust: 276 > > at 50thou 216 (wtf?) > > anyways this is what ive been told. > could someone please say 'decifer' this language and tell me what it means, > and also like how lumpy is it etc etc. > > thanks again, > ryan > > > > _________________________________________________________________ > Send and receive Hotmail on your mobile device: http://mobile.msn.com > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
