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Correct Advance Curve For 266 Cam With My 1275 Setup


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#16 PACINO

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Posted 27 April 2023 - 10:31 PM

Why the people is so afraid to add photos in their treads ?
Why don't you show us the coil and everything?
I using a 123 ignition dizzy.

#17 timmy850

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Posted 28 April 2023 - 09:12 AM


I wouldn’t bother doing any changes until you verify the timing

Is the idle 10 degrees like your program or zero? You might only be getting a total of 20 degrees

Or is the idle 20 degrees and you’re getting 40 degrees total?

The setting on my centrifugal curve graph is 10 degrees at idle, so i guess that's total distributor advance. I'll have a reread of the manual to double check. It ticks over pretty comfortably so i'd be surprised if I was getting a total of 40
My point is:
If your distributor is programmed to add 30 degrees and you didn't verify the timing then:

Maybe it’s starting and going up to 30 degrees
Maybe it’s starting at 10 and going up to 40
Maybe it’s starting at 20 and going up to 50

You simply don’t know unless you check with a timing light against a valid TDC mark

#18 PoolGuy

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Posted 28 April 2023 - 03:56 PM

 

I wouldn’t bother doing any changes until you verify the timing

Is the idle 10 degrees like your program or zero? You might only be getting a total of 20 degrees

Or is the idle 20 degrees and you’re getting 40 degrees total?

The setting on my centrifugal curve graph is 10 degrees at idle, so i guess that's total distributor advance. I'll have a reread of the manual to double check. It ticks over pretty comfortably so i'd be surprised if I was getting a total of 40

 

It could well be idling at 20, there's only one way to find out...






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