shiftycapone
wandering the desert
- Joined
- Oct 26, 2007
- Messages
- 2,034
I am in the middle of degreeing in my cam and could use a few pointers. Yes, I used the search feature and found a good thread or two but I have questions yet...
How are most finding true TDC? Making a piston stop or what? The head is on the truck. I rigged up the dial indicator on a rod in the injector bore riding the piston, took the max piston height in both clockwise and counterclockwise rotations. I got the same readings (duh), but not on the degree wheel, so I need to adjust the wheel. Is this a satisfactory way of finding true TDC or not?
Secondly my readings are not matching the numbers on the cam card. This could be attributed to my needing to adjust the degree wheel, which I am now realizing as I am putting it into words. I am taking the numbers at .050" as stated by the builder, and am coming up with the same numbers every time, so maybe it is the wheel and not the installed readings that are off.
This is the degree wheel I am using:JEGS Performance Products 81622 JEGS Precision Degree Wheel
I can provide whatever information is needed to get this resolved. For what its worth I was recommended .070" for clearance between valves to pistons. To give a crude check I used the adjusting nut to lower the intake valve .070" and rotated the motor, the cam swung through without contact, even with the added lift. So in theory the cam would work fine and without contact, but I would like to see exactly where it is. Thanks in advance!
How are most finding true TDC? Making a piston stop or what? The head is on the truck. I rigged up the dial indicator on a rod in the injector bore riding the piston, took the max piston height in both clockwise and counterclockwise rotations. I got the same readings (duh), but not on the degree wheel, so I need to adjust the wheel. Is this a satisfactory way of finding true TDC or not?
Secondly my readings are not matching the numbers on the cam card. This could be attributed to my needing to adjust the degree wheel, which I am now realizing as I am putting it into words. I am taking the numbers at .050" as stated by the builder, and am coming up with the same numbers every time, so maybe it is the wheel and not the installed readings that are off.
This is the degree wheel I am using:JEGS Performance Products 81622 JEGS Precision Degree Wheel
I can provide whatever information is needed to get this resolved. For what its worth I was recommended .070" for clearance between valves to pistons. To give a crude check I used the adjusting nut to lower the intake valve .070" and rotated the motor, the cam swung through without contact, even with the added lift. So in theory the cam would work fine and without contact, but I would like to see exactly where it is. Thanks in advance!