preludewillie

iTrader: (1)

So I have literally been searching for hours about cam degreeing. Honda-tech, small block Chevy engines, everything. I'm not grasping something, and I'm hoping someone can help me to figure out how to do what I need to do. I have one of the degree wheels from Xenecron coming right now, I have a dial indicator and a base. If I can't get it to stay still I can make a bracket to hold it steady, that's no big deal. On to my issues.

I have a B18B1, PR3 pistons, Delta 272 cams. There are no specs sent with the cam, i.e. no degree spec like some of the name brand cams. From searching, I found a thread where someone had called Delta and got the duration at .050 numbers. They apparently said 205 degrees for both cams, the OP of that thread said they actually found 214/220. I understand finding tdc, i understand zeroing out the degree wheel, I understand finding max lift of the cam lobe. What I'm struggling with is the .050 lift at x duration. I'm sure I'm overthinking this, but I just can't get a handle on it. If I have everything setup, tdc zeroed out on the degree wheel, pointer in place, I rotate the engine to get lobe lift at .050 (is this after top dead center, or do I call it before bottom dead center?). I record that mark on the degree wheel. I keep rotating the engine until I get to .050 before the valve is closed. I record that mark on the degree wheel. Then I take the average of the two recordings. I rotate the engine over to that value on the degree wheel, then loosen the cam gear bolts, and rotate the cam either way until I find the peak lift point.

Now my questions are...does this sound right? If not, what am I missing? I know cam timing can be adjusted on the dyno, and this is the easiest way to set it and yield the powerband you want, however, this setup will never see the dyno. Any help is appreciated. Thanks

1998GsRIntegra

If you haven't found this yet, it may help: https://honda-tech.com/forums/all-motor-naturally-aspirated-44/degreeing-camshafts-quick-shakedown-2003538/

My understanding (which may very well be wrong) is that if you are degreeing in cams and you don't have a cam card for them, you can set everything up(degree wheel, dial indicator, ect, and go 0.050" lift cam opening, then note the degree on the degree wheel, keep rotating until you get 0.050" lift cam closing, again, note the degree on the degree wheel, then split the difference between your two degree numbers and then you get your cam center line where at which you would set that cam to peak lift by adjusting your adjustable cam gear. You would do the same process for both camshafts. Now, as I said, I could be wrong, that is just how I've come to understand it.