The cams being set to 0/0 is trivial. There is always a little play either in the cam bar or when the engine is running. That tiny bit of play can alter cam timing. For the most part though it won't be noticeable.
And I know this won't pertain to the cams at hand but, http://www.focusfanatics.com/forum/showthread.php?t=259167
As you'll notice by the bell curves, at the beginning and end of the ramps variations of a cam degree or two won't make any difference. But when you get near the peak of the cam lobe it'll make a huge difference, or can.
The goal is to match the timing of the cams to what your intake and exhaust flow/velocities wants. That is where the dyno comes into play.
I've sat and played with every equation I could find as well as making a few of my own to try and find a quick path to getting close to perfect timing. It's not possible, but I did learn a few things along the way.
You can get kinda close doing the compression thing. But who's to say how much you leave on the table or where you're making sacrifices.
oh ok, that makes sense now. How many pulls did it take and about what did it run you?I went and got it dyno. They strapped the car down and started making pulls. First few pulls were to see where I was at. Then we did one cam at a time. Once one cam was dialed in we went to the next and then back to the other, till we got them dialed in. I have my dyno sheet posted in the Zetec dyno thread. I could have gotten more peak hp or tq but we dialed them in for the most avg. hp and tq through out the power band. Best money I spent on my car hands down.
I also want to add that my car was dyno'ed on a mustang dyno so my numbers are little lower than if they were on a dynojet. But you can see I make great numbers for the mods I had.
tom what exactly is this service, what does it do and what should one expect?You need to adjust the cam gears and get a tune , dyno is the only way to adjust the cam gears properly a compression gauge will get you close
13-13.5 WOT air fuel is WAY to lean and will kill the engine
Your in SC , I am in NC if your close I will adjust your cam gears on the dyno for 75.00
I can also do your tuning
So it was $150. for the dyno time and the tune adjustments?
Do you already have an SCT tuner or did they supply that and you leave with just a better running car?
How did they hook up the wideband or did they do any of that?
"Your in SC , I am in NC if your close I will adjust your cam gears on the dyno for 75.00tom what exactly is this service, what does it do and what should one expect?