Boy howdy...that'll definately cause a problem! lol. The tricky ones are when the fire ring seperates inbetween layers and there is no visible sign except for a little teeny tiny rust dot on the edge.
You made pretty quick work of getting the head off-congrats.
Cleaning: If the head has never been off and $$ isnt extremely tight right now- might be in your better interest to have a shop clean it up and inspect for cracks. Or if you know what to look for then you can handle it. Ive cleaned and inspected all my heads, and then had Tod and EB inspect a couple as well. Kerosene and brushes...lots of brushes! Cracks will look like a hair imbedded in the casting and will disappear when you change the angle of lighting...yet wont be detected with the finger nail test.
On the cam: Hmmm whats there to tell? lol Well, your powerband will shift a little lower in the RPM scale, yet be longer overall. Your smooth quiet idle is gonna be a thing of the past but you will get used to that. Some people have problems after install that cant ever be tracked down-yet its cam related. This is what EB calls "OH...whats that syndrome"! Performance camshaft will change the engines attitude and will require some tuning tweaks to get dialed in. For example, my engine got hungrier at idle, isnt happy unless warm idle is 950-1000 RPMS. If ya have any specific questions just ask. I run 2 stepped exhuast from the downpipe into 2" strait pipe into an aftermarket 2-1/4" muffler and exit with 2-1/4" so we have similar exhuast systems regarding flow.
AFM adjusting: BAD JUJU Jeremy! My opinion- Dont ever cut the top and mess with something that the ECU relies on for maintaining air/fuel ratios. The increase in vaccum will pull the vane in the AFM proportionately anyways. So the dont worry about fuel needs yet. Over the last few years, Ive helped a couple of people fix their 22R-Es. Sometimes we can replace damn near the entire injection system before a light goes off in my head. When I ask "have you screwed with AFM"? and the answer is yes...replace the AFM and problem solved. I got cocky and tweaked mine 3 teeth rich thinking the Street RV head and exhuast mods could handle it. That was my biggest mistake- 2 years preaching Hands Off and then I went and did it. About 3 weeks later my engine lost the #4 compression rings. After EB looked at it and I finally told him what I had done...yup rich mixture washing down the cylinder walls. LOL Only as a last resort to get a heavily modified engine to run should the AFM be tweaked. Ok...gonna climb off the soapbox now- you got some work ahead of you.
~Darin <img src="/forums/images/graemlins/baby.gif" alt="" />
