setting timing with crank trigger - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1970chevy · 04-29-2009, 07:08 PM

trying to set the timing with a crank trigger i am running a 84697 dist and msd 8620 crank trigger i put it on #1 tdc i have the rotor line up with 1 cyl on the cap the i have the pick up in the center of the magnet i have the balancer on 36deg tdc i tryed to move the pick up silder both ways it gets a little better when i slide up to the motor its still back fires through the carb
thanks

Marv D · 04-29-2009, 08:36 PM

Are you SURE your on TDC #1 COMPRESSION stroke? Pull #1 plug and rotate the motor till you feel the compression building, roll it up to 36 degrees. Make sure magnets line up. Make sure rotor and #1 plug tower on the cap line up. That's all there is to it.

1970chevy · 04-29-2009, 08:51 PM

i had some on bump it over i had my finger on #1 hole when i felt the air blowen out i look 1 is lined up with cap and the magnets line ill double check may be i am going to far with the comp stroke

thanks

71chevytruckguy · 04-29-2009, 10:40 PM

dont know anthing bout a crank trigger setup, but from the way your talking it sounds like i needs more timing. have you checked to make sure TDC on the balancer lines up with TDC on the #1 piston? Chris.

1970chevy · 04-30-2009, 06:34 PM

ii am running 38deg on intial timing and 36 deg on total dont know if thats to much timing 13 to1 805 inch soild cam

04-29-2009, 08:36 PM	#2
Marv D Registered Truck Offender Join Date: May 2008 Location: hells training ground (aka Ariz) Posts: 3,118	Re: setting timing with crank trigger Are you SURE your on TDC #1 COMPRESSION stroke? Pull #1 plug and rotate the motor till you feel the compression building, roll it up to 36 degrees. Make sure magnets line up. Make sure rotor and #1 plug tower on the cap line up. That's all there is to it. __________________ Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral.

04-29-2009, 08:51 PM	#3
1970chevy Registered User Join Date: Mar 2005 Location: usa Posts: 142	Re: setting timing with crank trigger i had some on bump it over i had my finger on #1 hole when i felt the air blowen out i look 1 is lined up with cap and the magnets line ill double check may be i am going to far with the comp stroke thanks

04-29-2009, 10:40 PM	#4
71chevytruckguy Registered User Join Date: Jul 2005 Location: Kernersville, NC Posts: 599	Re: setting timing with crank trigger dont know anthing bout a crank trigger setup, but from the way your talking it sounds like i needs more timing. have you checked to make sure TDC on the balancer lines up with TDC on the #1 piston? Chris. __________________ its a work in progess. 71 c-10 lwb, in the middle of frame off restoration. 69 c-10 swb, drag truck, 406 sbc, balanced, comp 292 cam, ported, polished, gasket matched, and bowl blended pro comp 210cc heads, 2.02/1.60 ferrea valves,1.6 roller rockers, re curved hei with msd 6al box, 2-step rev limter, accel 300+ wires, ported victor jr intake, holley 750 double pumper carb, dynomax 1 5/8 headers, 4 spd munci m-20 with super case and iron midplate, mr. gasket vertigate shifter, 5.38 pro gears with full spool, 33 spline moser axles and c-clip elimators, line-loc, 5 gal fuel cell, holley blue pump. 7.807 @ 88.37mph 1.60 60FT 80 g-20 van, tow rig, cammed 305, th350, 10 bolt 88 jeep wrangler, dd, 258, ax-15 swap, 4.5" lift, 33x12.50's, lockers, 3.55's

04-30-2009, 06:34 PM	#5
1970chevy Registered User Join Date: Mar 2005 Location: usa Posts: 142	Re: setting timing with crank trigger ii am running 38deg on intial timing and 36 deg on total dont know if thats to much timing 13 to1 805 inch soild cam

04-29-2009, 07:08 PM	#1
1970chevy Registered User Join Date: Mar 2005 Location: usa Posts: 142	setting timing with crank trigger trying to set the timing with a crank trigger i am running a 84697 dist and msd 8620 crank trigger i put it on #1 tdc i have the rotor line up with 1 cyl on the cap the i have the pick up in the center of the magnet i have the balancer on 36deg tdc i tryed to move the pick up silder both ways it gets a little better when i slide up to the motor its still back fires through the carb thanks



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