|
2 times?- kinda sorta if you're differentiating between compression and exhaust stroke, BUT, a 1cyl lawnmower engine right up to a V16 packard will have any referenced cylinder reach TDC with every rotation measured from TDC to TDC regardless of compression or exhaust stroke, 2 stroke or 4 cycle.
the cam makes a full 360 degree rotation in a 4 cycle engine every 2 turns of the crank-
if youre trying to find #1 for timing- and if your harmonic/pulley markings are assumed to be askew, remove the valve cover, remove #1 plug, rotate crank by hand and watch for the intake valve to open, keep rotating until you see it close- this is typically BDC or close to it, then rotate another 1/2 turn until you can see or feel the piston reach a pinnacle of travel- now you have dead #1- set the rotor to be about 1/8 before t aligns to the terminal of #1 on the cap- rotationaly you should be @5 degrees advance [pay mind to your engine- hemis, polys are CW rotation, B/RB are CCW]
-----Original Message-----
From: John Hagen <sprinthag@xxxxxxxxx> To: L-FORWARDLOOK <L-FORWARDLOOK@xxxxxxxxxxxxx> Sent: Sat, Feb 18, 2012 4:47 pm Subject: Re: [FWDLK] Engine Question Two times on any 4 cycle engine including V8's. John Hagen -----Original Message----- From: Forward Look Mopar Discussion List [mailto:L-FORWARDLOOK@xxxxxxxxxxxxx] On Behalf Of Ron Waters Sent: Saturday, February 18, 2012 15:44 To: L-FORWARDLOOK@xxxxxxxxxxxxx Subject: [FWDLK] Engine Question On a typical V8 engine, how many times must the crankshaft pulley rotate before the engine has completely cycled. In other words, #1 piston TDC until the #1 piston is at TDC again. Ron ************************************************************* To unsubscribe or set your subscription options, please go to http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1 ************************************************************* To unsubscribe or set your subscription options, please go to http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1 ************************************************************* To unsubscribe or set your subscription options,
please go to
|
Back to the Home of the Forward Look Network