CIS is a nice simple system, but how will you 'tailor' the cone shape of the AFM to your particular engine needs like different cams, CR etc??
Jim K.
Jim, Pardon my ignorance but what is the AFM.... OHHHH Air flow Meter. Duhhh.
To be perfectly honest what I'm trying to do is to build a bit more power for the street and have an interesting project to boot. My assumption, and it may be incorrect, is that by using an AFM that is from a previously turbocharged 2.0 L (or so) engine I should be somewhere in the ball park as to overall flow/fuel metering proportions.
I believe the AFM that I have will adequately flow sufficient air and if anything it may run a little rich. Coming off of a 2.1L turbo motor. My hope is that it will still be within the range that the Lambda Sond system and frequency valve will be able to compensate and keep the mixture within an appropriate range. If that turns out not to be the case, I guess I'll have to play with the components in some other more, as of yet not yet determined or clearly thought through, sophisticated fashion.
As to spending money.... well it's to late for that. I already disassembled my 240GLT and gutted it for the parts I want. I have also assembled a collection of used ALFA, VW and SAAB components through ebay. Fortunately, the overall cost so far has been reasonable and I'm looking forward to the challenge. Right now I'm having fun designing, or attempting to divine, how to build a stout and adequate exhaust head to turbo manifold. (Taking some of "Corky Bell's" suggestions there.)
My initial goal is to see if I can do it and then see how close to truly functional it is. If it does work reasonably well then I may look into a complete rebuild of the motor with the turbo set up as the ultimate goal of the rebuild. As i have 2 motors my intention is to craft the parts for the turbo conversion and bolt/test them on one motor as is. I'll probably use the newer 86. If it works and I like it HURRAY!

If I can't get it to work or it just isn't what I imagined then I can always bolt the original intake and exhaust components back on and rebuild the 84 motor in a more traditional fashion following the concepts of your book. Either way the 84 motor will eventually be rebuilt and the 86 will serve to keep the car drivable during the driving season in one guise or the other.
Your comment about the 38mm overall dimension of the ports is a good one. It is certainly one argument in favor of using a single throttle body plenum instead of the ITBs. That would allow for more aggressive porting and larger valves if the turbo works and I decide to rebuild for that purpose. Frankly before it is all done I will probably build and try both set ups. Who knows. I still have that darn Mustang to finish.
Thank you for the reply and the continuing food for thought. It is highly appreciated and I hope that the quantity of detail I'm providing is not overly annoying.
David