Quote:
Originally Posted by 400 Lemans
It's a good thing you are going to take it back apart and check it with your degree wheel. I think you are going to find out that you are at 104 degrees advanced and not the 108 that you're looking for.
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Well, here are the new numbers for you:
(1) Advance key is at 8 degrees at the Crank and 4 degrees at the Cam. 113.5 Ic/l (1.5 + 4 = 5.5 advance),
113.5 - 5.5 = 108 degrees advance, hypothetical.
(2) Post # 299 has a math error, sorry late at night
(3) We set the Degree Wheel back up to the Engine Crank. We set the Dial indicator on the #1 cyl. @ TDC on the compression stroke.
(4) At .050", after passing to .100" and back to .050" on each of our tests we came up with these degree results:
109, 109.5, 110, 113, 115, 116, 113, 111.5, 110.5, 111.5, 111.5, 111.5, END.
(5) Supposition: The numbers range from 109 to 116, that is 8 different degree numbers. The question is: "could one surmise this is due to Dwell?"
(6) Supposition: Since 112 degrees is in the middle " is this the true TDC now, with the advance we added?"
(7) Note: 112 degrees just happens to be the "041" Cams Intake lobe centerline from the factory.
(8) Is my new ICL now 112 @ 0.050"?
(9) Note: We are using the .050" position on both sides of the Intake Lobes Cam lift to find the new Ic/l after an 8-degree key is used on the Crank Gear, this is 4 degrees at the Cam!