timing adjustments - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer timing adjustments

Print Thread

timing adjustments #1421772 04/18/13 03:42 PM 04/18/13 03:42 PM
Joined: Jul 2003 Posts: 303 Virginia Beach, Va wtucker OP enthusiast
wtucker OP enthusiast Joined: Jul 2003 Posts: 303 Virginia Beach, Va	When timing the engine how much should the mark jump around from 0 at idle? Should it be pretty steady or jump back and forth 5-10 degrees? I'm having a hard time finding my intial with the mark bouncing all over. What would cause it to bounce?

Re: timing adjustments [Re: wtucker] #1421773 04/18/13 04:01 PM 04/18/13 04:01 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: What would cause it to bounce? sloppy timing chain/gears and or dist lower tang in the inter gear rotational slop. Put the timing marks at TDC with the rotor on #1 then pull the pass valve cover & move the crank back & forth a bit & see how much travel you have till it makes one of #6 cyls' rocker arms start to move which'll tell you how much chain play you have. With your hand turn the rotor back & forth lightly to see how much tang play you have & dont turn hard enough to get into the springs. An aluminum 1/2" ID collar on the bottom of the shaft will elim alot of that. McMasters/Carr & others sell them. Make sure your timing light is hooked up securely live every 24 hour block of time like it's your last day on earth

Re: timing adjustments [Re: RapidRobert] #1421774 04/18/13 04:32 PM 04/18/13 04:32 PM
Joined: Jul 2005 Posts: 1,301 Penna 7 70satelliteguy pro stock
70satelliteguy pro stock 7 Joined: Jul 2005 Posts: 1,301 Penna	They all jump around some unless you go to a Crank trigger! Mike

Re: timing adjustments [Re: 70satelliteguy] #1421775 04/18/13 06:47 PM 04/18/13 06:47 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks master
deaks master Joined: May 2004 Posts: 3,210 robin hood country	I have put the dist shaft across the back of a vice and give the tang a tap with a hammer on both ends to tighten it in the slot. But dont get carried away. Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: timing adjustments [Re: deaks] #1421776 04/18/13 06:59 PM 04/18/13 06:59 PM
Joined: Jan 2003 Posts: 32,934 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,934 Grand Prairie,Texas	Be sure the vacuum advance hose is disconnected.

Re: timing adjustments [Re: wtucker] #1421777 04/18/13 08:18 PM 04/18/13 08:18 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Broken or too loose springs in the dist will cause it jump around at idle also. My eddie headed 474 cammed 340 stays within 2 degrees at idle but at one point I had too loose of springs in there and the timing moved around at idle. I bend the tang that the spring attaches to in the dist to fine tune it. Last edited by Challenger 1; 04/18/13 08:21 PM.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1