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Old 10-14-2012, 08:23 PM
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initial and total timing

So I just read this really good article. Distributor advance whenever I set timing I always just focus on initial timing, at least that's what I was taught in school. I take it total advance is more important or just more recognized by the high performance crowd. Real question here is how exactly would I go about reading total advance. Just buy some timing tape?? Help a rookie out.

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Old 10-14-2012, 08:30 PM
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Quote:
Originally Posted by birkey View Post
So I just read this really good article. Distributor advance whenever I set timing I always just focus on initial timing, at least that's what I was taught in school. I take it total advance is more important or just more recognized by the high performance crowd. Real question here is how exactly would I go about reading total advance. Just buy some timing tape?? Help a rookie out.
The first thing you need to know is.....Does the position of the #1 piston in the bore coincide with the TDC notch on the damper inertia ring? Maybe they didn't teach you that in school either, but you can learn it here....
http://www.crankshaftcoalition.com/w...op_dead_center
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Old 10-14-2012, 08:37 PM
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36degrees BTDC is 1/10th the circumference around the balancer from TDC
30deg is 1/12th

wrap a masking tape around the balancer marking TDC on each end.
remove it and lay it out flat and measure between the two TDC points.

36deg is 1/10th of that spec. Measure that and mark it on the tape.
reinstall the tape realigning the two TDC marks and mark the balancer @36deg BTDC.
Make sure you got it one the right way. You only got two choices.
Now you can directly read 36deg BTDC Max WOT advance using a normal timing light.

or buy and install the right Mr Gasket balancer timing tape. You need to know the balancer diameter to select the right tape.

The TDC mark on the balancer timing tab TDC is never correct. it is checked and corrected using a piston stop.
To find true TDC. Pretty basic stuff.
Ya it matters.

Last edited by F-BIRD'88; 10-14-2012 at 08:50 PM.
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Old 10-14-2012, 08:48 PM
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ON a 8" diameter balancer 36deg BTDC is 2.51" away from TDC.
if you wipe off the balancer with lacquer thinners so its clean, the masking tape and or Hr gasket tape will stick to the balancer.
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Old 10-14-2012, 08:50 PM
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Great material. If you know of anymore articles like this that get more in-depth with timing I would greatly appriciate it.
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Old 10-14-2012, 08:57 PM
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Quote:
Originally Posted by birkey View Post
Great material. If you know of anymore articles like this that get more in-depth with timing I would greatly appriciate it.
Make a timing tape
Info and links on ignition advance
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Old 10-14-2012, 10:52 PM
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Your post about chamber shapes has been moved into a new thread titled Combustion chamber shapes. Please keep your threads subject specific.
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