When degreeing a OEM roller cam do you use a solid lifter as you do with other cams?

Aaron,
They make a degreeing tool than has a round end to simulate the roller lifter. If you dont want to buy one, just use the stock roller lifter and put the end of your dial indicator on the edge of the lifter so you dont have to worry about it collapsing.

Thanks Bill

I was using the stock lifter and doing as you mentioned. I was degreeing the cam with the @.050 method. Problem was I keep getting duration of 313* instead of the 226*.

Have any idea way?

Cam can't be that off. Its a custom grind by Luanti.

sounds like you're measuring the ramps in with the duration. As the lifter starts to come up on the lobe mark your degree wheel when it gets up to .050 lift. rotate the engine, watch the lobe go to full lift, start going down. When it gets down to the .050 point mark the degree wheel again. I predict the duration will be a lot closer to 226.

Add both those numbers to 180 right?

no, just start at .050 and rotate the engine till it's at the .050 point on the way down. the number of degrees between the 2 marks is the duration at .050.

If you want to get an idea of what it might have been labeled as if an aftermarket measure the duration between the .006 points.

Is this a OEM cam or a custom grind from Lunati? Can't be both.

Tom

Its a a retro roller grind on a OEM core or step nose cam. I had to get Luanti to custom cut it on this style.