Re: 440 Timing....what is my timing reference point?????
[Re: Dodge Don]
#1478580
08/02/13 08:32 PM
08/02/13 08:32 PM
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Joined: Feb 2005
Posts: 4,333
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,333
Prospect, PA
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Because you have timing marks on your balancer, it would be better to identify the zero location on the tab, and use the numbers on the balancer.
Last edited by BSB67; 08/02/13 08:33 PM.
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Re: 440 Timing....what is my timing reference point?????
[Re: Dodge Don]
#1478581
08/02/13 08:34 PM
08/02/13 08:34 PM
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Joined: Feb 2005
Posts: 4,333
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,333
Prospect, PA
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Yes. Can you see the numbers through the hole?
Last edited by BSB67; 08/02/13 08:37 PM.
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Re: 440 Timing....what is my timing reference point?????
[Re: Dodge Don]
#1478583
08/02/13 08:53 PM
08/02/13 08:53 PM
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Joined: Jan 2007
Posts: 292
State of Flux
Dodge Don
OP
enthusiast
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OP
enthusiast
Joined: Jan 2007
Posts: 292
State of Flux
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So based on this info.....this afternoon when I was checking my Base Timing at 900 RPM Idle the top of the tab was at 30*. And I can see that the top of the tab is 12* from Zero (hole) to top of tab..........therefore when I thought my base timing was 30* (which seemed concerning to me) it was actually 18* if I had looked at the degree lined up with the Zero/hole mark. Seem correct? 
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Re: 440 Timing....what is my timing reference point?????
[Re: Dodge Don]
#1478586
08/02/13 11:16 PM
08/02/13 11:16 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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As said the hole in the middle of the tab. right now you're at 60 deg BTDC. You could put a drop of white paint where the red arrows are on the edge of the dampener in several places so you can see when they are lined up with the zero hole. (4) paint marks 10-15-20-36 is enough & works for me & just memorize your (4) numbers so if your third dot is even with the hole you are at 20BTDC & if it ain't dead on just use the tab as a ruler to add or subtract degrees to see what you have. When the tape was added they put the beginning of it at the slit on the dampener but the slit may not be actual piston TDC. You'd need the ten dollar tool that screws into the #1 plug hole to double check that if desired but the odds are you are fine.
live every 24 hour block of time like it's your last day on earth
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Re: 440 Timing....what is my timing reference point?????
[Re: Cab_Burge]
#1478589
08/03/13 05:09 PM
08/03/13 05:09 PM
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Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
Lefty
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master
Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
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Quote:
You should try to verify the TDC on the balancer and the timing tab to make dead sure what you really have   A real simple way to check that is to remove the #1 spark plug and use a short thin screwdriver in the hole on the piston top, I would bring the balancer so it is showing around 30 degrees before top dead center and then have someone else turn the crank over clockwise with a breaker bar and socket while you use the screwdriver to feel the piston travel, it will slow down and stop at the real TDC, it is okay to rock it back and forth several times to get it where you think the piston is stopped at Top Dead Center, once you find that spot look at your timing tab and balancer marks and see how close they are  Let us know waht you find
That's how I do it. If you want to make sure you're on the compression stroke put your finger over the spark plug hold and you can feel the compression stroke.
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Re: 440 Timing....what is my timing reference point?????
[Re: Dodge Don]
#1478590
08/03/13 06:51 PM
08/03/13 06:51 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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With the "vac gauge method" to set initial: vac adv capped. vac gauge on manifold port. keep advancing the dist till you reach max vacuum all the time reducing the idle speed (in gear/E brake on) back to the slowest idle speed it will function at which is what you (the eng) will see stoplight to stoplight as advancing the timing will as you know speed up the eng (to a point). When you reach the max vac (& idle speed is normal low) turn the dist back till the vac gauge drops 1 in hg & the timing at that point is what YOUR eng wants. If it will crank hot at that initial timing you're good & if it labors then reduce the timing 1 deg & try again. With the initial finalized (keep vac capped) then set the keys so you have 36 total (initial+ slots). Then mix/match springs staying just under the pinging point at WOT on your hottest/driest day then plug in & adj the vac adv. More on that later as it is too involved to cover now
live every 24 hour block of time like it's your last day on earth
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