Quote:
Originally Posted by johnta1
Here's a link to How to Degree Cam
You will need a dial indicator and the degree wheel at a minimum.
What you have done is basically finding the TDC.
Next would be finding the cam open/close specs and where they are at on the degree wheel.
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John, I bought the Degree wheel and I own the dial indicator. I sent my roommate out with the directions I found on line. He is smart and has done all the hands on this project. He came in and said that he got 1-1/2 degrees advanced. Ironically, this cam came through Butler performance with the intent that I install it straight up. We originally installed this "041" Cam with the dot up at 12 o'clock on both gears and the router pointed at the steering wheel and the piston at TDC on the Compression stroke and both valves closed. We have the Heads sent out being remanufactured at this time and the Intake is off, how hard can this be to find TDC? We are looking at it directly, the roommate installed the dial indicator over the #1 Piston and raised the Piston until it went no further and zero it out. Now we have Initial TDC, we lined up the Wire hanger to that setting. he went CW 360 degrees and came to the same place, then he went CCW 360 degrees and obtained a reading of 1-1/2. What does that # represent? One person stated that is the slop in the timing chain, I thought it might be the Advance built into the Cam by Melling at the factory. This is brand new Timing advance Gears and chain and Cam has maybe 2000 miles on it. One person said we need to find TDC at .050" each way. So, i will show my roommate his and your post tonight and see what we find out. Everything is still installed on the motor. Some were in the archives on my computer, I have TDC, ATDC, BTDC, etc... for all the events. If I can find that information then I can use it to compare my findings, as I learn how to use the degree wheel 101, like a Cam card that I never received with the Cam. The only thing I remember is that Intake is 112 c/l and the Exhaust is 115 c/l and the difference is 3 divided by 2 = 1-1/2 advance degrees that was built into the cam. So, I can install it straight -up. Once we find the actual TDC we can move on to the next step that you're talking about. After that is done, I want to advance the cam, this time safely, knowing where we are truly at.