a few questions...

[Lou Faustini]

    Hi. 
    Does anyone out there have any information on how to decypher the data 
stream on the GM ALDL?  I have played with it a little, and all I have come 
up with is the baud rate (8192bps) and what appears to be the markers for 
start-of-frame. I have no idea what the data it is sending me is supposed to 
mean. I assume things like airflow  and RPM are being sent, but I have no 
way of knowing how they are encoded. I really don't feeel like disasembling 
the 32k of 'hc11 code in the ECU, so any help would be appreciated.

   Next question-- 
   This isn't really a fuel-injection question, but I am sure some of you 
know the answer to this one:

   Kawasaki and Yamaha just announced their 1995 jet-skii lineup. In the 
spotlight are their new 3-cylinder motors. They range from 900 to 1100 cc's 
in displacement. After I stoped drooling at the pictures, I read a little 
about the motors. 2-cycle water-cooled, tripple carbs. No black magic... 
Until you read abot the compression ratio. The Kaw motor has a compression 
ratio of 5.5 to 1 !! the Yamaha motor runs 5.1 to 1 !!  This is very low in 
contrast to their 750cc motors, which run typical stock ratios of 8-ish to 
1. Aftermarkit kits for compression ratios of 10 to 1 are very popular for 
the 750 motors, and have proven to be a powerful and reliable combination. 
So my question is, why would ANYONE design a motor to run at 5-ish to one 
compression? I heard once that in-line 6-cylinder 4-cycle motors have 
problems spinning at high rpm's. I dont recall why. Is a 3-cylinder 2-cycle 
motor subject to the same problems? Are these problems for real?   Any help 
would be appreciated.

                                               ----- Lou Faustini