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

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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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