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  #1  
Old 09-19-2003, 11:39 AM
71SATELITE 71SATELITE is offline
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Gripe Got the time??????????

Hey just a quikie, anybody here use timing tape on their 318 for timing? If so can you give me the measurment in inches from 0% to 33 BTDC and 35 BTDC. I checked every car place in town today and no one had it. I asked this one "performance" place and I told the lady it was a 318 and she just gave me a blank look and then asked me what year chebby did that come from???? To make a long story short I am going to order some tape but need to get rid of the PING today. Thanks!
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  #2  
Old 09-19-2003, 11:56 AM
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I can only offer another question, at this point.

Are you using an aftermarket Vib. damp. or a stock piece?
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  #3  
Old 09-19-2003, 12:55 PM
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Whoops, its a stock 1971 318. Thanks!
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  #4  
Old 09-19-2003, 01:00 PM
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Do a search for of the board for 'timing tape'. You will find the measurements for the different sized balancers/
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  #5  
Old 09-19-2003, 03:01 PM
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Maybe just roll the timing back a few degrees until your timing tape shows up?

Higher octane gas?
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  #6  
Old 09-19-2003, 06:11 PM
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How can he do that, if he doesn't have timing tape to begin with???
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  #7  
Old 09-19-2003, 06:13 PM
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If you want an easy way to do it, just measure the diameter of the balancer, then divide by 360 and then multiply by the amount of max advance that you want. That will tell you the exact measurent from the 0 mark.
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Old 09-19-2003, 11:53 PM
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Question

Ed

Correct me if I am wrong, but i am having a little trouble understanding your method. The circumfrence of the harmonic balancer is equal to the diameter times Pi. You need to take the circumfrence of the balancer times the amount of advance then divide by 360 to give you the measurement from 0/360 in inches.

It's a ratio:

(Pi x d)/360* = X/Y

where:
d = diameter (inch)
X = Advance in inches from 0*
Y = Advance in degrees from 0*
Pi = 3.14128......

Using algebra:

(Pi x d x Y)/360* = X

Shoot I hope this make sense!
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  #9  
Old 09-20-2003, 01:09 AM
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I meant circumfrence. You can run a string around the circumfrence of the balancer and then divide that by 360. The resulting number is the distance for each degree.

Thanks for correcting me.
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  #10  
Old 09-20-2003, 11:03 AM
71SATELITE 71SATELITE is offline
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Guess I should have paid attention in high school a few decades ago!! What is a recomended advance or at least a starting point for a stocker 318 with 2 barrel. The motor is tired yet and it usaualy likes about 8 or 9 max. It sounds like a sewing machine when I down shift to second.
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  #11  
Old 09-20-2003, 04:05 PM
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No more than 36* total timming. 8 will work fine if you have 28 * timming added by the disrributor.
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  #12  
Old 09-20-2003, 06:31 PM
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DWC we should just have our own prive question answer line.
Next queston is on the bushing it shows total mechanical advance correct? Where on the bushing? Total mechanical advance is as far as the distibutor will advance correct? The vacum advance just help it advance faster to save fuel economy? Did I hit the nail on the head or does it have mechanical and also additional vacum? I need to rip the hood off phase the distibutor and pull all the plugs and tune this thing right. Mabye tomorrow...
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  #13  
Old 09-20-2003, 06:46 PM
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E mail ******************** anytime. It has both mechanical and vacum timming added. Just plug the carb fitting and never run the vacum again. And to find out the mechanical advance added to it there is a number on the base plate under the magnetic pick up. Hope that helps.
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  #14  
Old 09-21-2003, 02:12 AM
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71

I am running 10* advance at idle on my 72 318 and it is tired as well. I have not noticed any detonation and I am running 89 octane. It is a little flaky going uphill on the freeway when I run 87 though. Vacum will add to the total, but it is only active during part throttle acceleration. Do you have a dial advance light or timing tape? What octane fuel are you running?
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  #15  
Old 09-21-2003, 09:48 AM
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I run the good stuff 87 , I ran some 92 at times and it doesn't ping a bit but it turns the car into a real pooch. Don't ask me why. Same thing happened when I put on a K&N air filter it slowed it down. My car likes it stock clothing I would say.
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  #16  
Old 09-21-2003, 12:12 PM
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With the kn on there you leaned out the air fuel mix that's why it did not like it. As for the 92 making it a pooch, you dont have enough compression to run it. Higher octane burns slower so it needs more compression,cam,rpm, etc.etc.
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  #17  
Old 09-21-2003, 12:13 PM
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Ed, All I meant for him to do was roll the timing back a little bit to lose the ping he was getting until he gets his timing tape.

But, doing the math or the string method is better, no doubt.
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  #18  
Old 09-21-2003, 09:30 PM
71SATELITE 71SATELITE is offline
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Well I pulled the timing light out of the cobb webs today and checked it out. The distibutor had slipped 2% as it does from time to time. I dialed it back 2 degrees to 8% right at 35% around 2000 and slowed the advance at the distibutor. Its nice to have my baby back running hard. Still a little bit on high rpm down shifts but it now pulls again hard like a raped ape all the way through the power range. The carb is tuned to the max, plugs looked perfect. Thanks for the help guys.
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89 LeBarron Convertable Turbo
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