Harmonic Balancer W/ Timing Light Error - Team Camaro Tech
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post #1 of 3 (permalink) Old Oct 3rd, 05, 08:14 PM Thread Starter
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Drew
 
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Harmonic Balancer W/ Timing Light Error

Hey
Here's The Deal I just Converted my old points system to an electrical system on the same Distributer W/ Vaccum Advance and I have the firing order right But when I plug in the timing Light to Time it It is No wear Near the timing plate As a Matter of fact I Retard it and it runs EVEN Better and if the numbers went lower it would be reading at somewear arround 25 to 30 degrees Retarded. My Auto Shop Teacher ( I'm 16 ) Says that my vaccum advance Might be stuck open but I'm Just curious if you guys could tell me if Thats right or if it could be something els like if a vaccum leack arround the carb If It could also make it read like that. But if it is ( My Vaccum advance stuck open ) I was wondering If there is a way 2 fix that or if I can take out the vaccum advance and not have 2 buy a new distributer or what I Could do But I appriciate the help Thanks Again

Drew
1967 RS Camaro
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post #2 of 3 (permalink) Old Oct 4th, 05, 04:52 AM
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Re: Harmonic Balancer W/ Timing Light Error

If the timing marks are 25* to 30* retarded, one would not be able to see the mark due to the harmonic balancer mark would be at the 3 o'clock position or further clockwise. If the distributor is turned CCW, its advancing the timing, the timing mark will be going CCW when viewed by the timing light. CW will be retarding the timing. Are you aure you'll on #1 plug?

Usually, when a vacuum unit fails, it either is stuck at the "at rest" position or the diaphram is broken and the unit is still at the "at rest" position. Never seen one stuck open, maybe the instructor is suggesting the diaphram is really broke and the arm is disconnected inside and the arm has "sunk" inside the vacuum can. This would advance timing.

You can buy just the vacuum unit and change it with the distributor in the engine, a little difficult, but can be done. And it does make a difference if the engine is 2-bbl equipped or 4-bbl equipped.

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post #3 of 3 (permalink) Old Oct 4th, 05, 06:10 PM Thread Starter
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Drew
 
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Re: Harmonic Balancer W/ Timing Light Error

Thanks For The Advice And For telling me That I don't Need To Get A New Distributer But I Am Pretty Darn Sure I Am Firing on #1 But I Will Check It Thanks Again

Drew

1967 Rs Camaro
Origional 327
Deluxe Interior
4:11's W/4 Speed Muncie
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