Jrgunn, that's pretty much how I feel.
Paul, nice post.
"A guy in his basement is not going to port heads better than a CNC. "
CNC porting accomplishes two things. It will replicate the ports exactly the same way in every head, and it is much faster than porting by hand.
Porting by hand accomplishes two things. The porter can make some contours, if required, that the 5 axis CNC will not be able to do. These contours may be the "bit of magic" that makes the head produce even more power over the CNC'd head. The other thing that is accomplished is adjustment for particular heads. Not every casting is exactly identical. The human porter can spot these differences and compensate while porting in order to get the best results for this particular head.
Not saying that CNC porting isn't good. It can be excellent. I am just saying that, other than speed, it has no advantage over manual porting, and the human porter can do things with a head that a CNC doesn't know to do.
I also was not born with the knowledge to work on cars. The first thing I did on my first car was to replace the engine when I was 18. How did I manage to do that? I read a chilton's manual and a magazine article on how to do it. Ok, so yeah, the car was a 1968. Not too technical, eh? Still a big job to replace the engine yourself when you haven't even changed an alternator yet.
Well, the new engine had an electronic distributor and I wanted to use it; electronic ignition in a car that was built before electronic ignition existed. I made it work. How? I copied a diagram of the ignition system from the car that the engine came out of and copied the ignition diagram of my car, both at the library, and studied them. Then I figured out where the two systems meet and adjusted for that and made the appropriate connections and splices. The car fired right up.
Don't be afraid to reference repair manuals at the library or magazine tech articles. This is where you learn about cars. If you don't know something do the research on it.
Many people want someone to explain a process to them. There is a reason that you are not taught this way in school; you can't retain everything someone says to you. That's why you've got books and hand-outs to READ. Information that you read is retained far better than something someone says to you. After you've done your research THEN ask someoneo that's done it before so that now you can understand what they are telling you.
On my wife's car I rebuilt the engine, complete suspension, installed Granada front disc brakes, lowered the upper control arms, replaced the rear axle, all the brake lines, bent all the front brakelines myself, made a power brake booster from a 1981 Mustang work in her 1966, added a dual master cylinder to replace the dangerous single reservoir M/C, replaced the entire rear brakes (every component) installed a headliner (the old bow type), welded on subframe connectors, and many other things. Some of this I had done before, lots of it I had not, so don't say "Well, you've got all that experience...." EVERYONE starts out with NO experience, so we all start at the same point. Anything that I hadn't done before I read up on to learn about, not people's posts of what they think or believe, or have heard about doing something, but from magazine tech articles and books and manuals. That is where learning comes from.
I personally have a hard time paying someone to do something if I can do it myself, or figure out how to do it myself by learning.
I have saved thousands of dollars this way.
I am 43 years old. In this time I have learned NO ONE cares about your stuff as much as YOU. If you take nothing else from this post please hang onto this point.
While building my wife's engine I had the block tanked and machined at a very reputable, 35 years in business performance shop. They left a plug out of the oiling system which gave me "0" pressure to the lifters on the left bank of the engine. It's little details like this that will kill you. Also, after I notched the block for clearance for the stroker I took it back to get it tanked again to clean it and then get cam bearings and freeze plugs put in. When they said it was ready I went to pick it up, all wrapped up nicely in plastic. Unfortunately there were no cam bearings or freeze plugs.
That goes to show you that reputation and duration does not guarrantee quality work. I will not be taking my next block to them. Imagine if you had them build your engine and had full floating wrist pins and they left a spiral lock out. There goes your cylinder!
Nobody cares about your stuff more than you.
Don't be afraid to research how to do something at the library or by reading tech articles in magazines. You will have much more money to buy more PARTS to modify your car.
If it's your daily driver and it needs to be fixed to take to work tomorrow or the next day, yeah, take it somewhere and get it taken care of. No time to learn at that point.
Just realize, every one of us that have years of experience started out with none. If you want to save money, know exactly what kind of care went into the work, want to be able to verify the work that was done, and get a great sense of accomplishment then open a book or manual, read a tech article, and get dirty.
.........Oh! And on that point, I have been working on cars for 26 years and the only time I ever wore a glove is while doing welding. I hate seeing people with their "Mechanix" or blue "Nitril" gloves. It's not brain surgery, and whatever you get on your hands washes off.
Steve