Preliminary results - torque

Hoo Boy!! After looking at how my formatting translates to how the material looks on the blog, I'm going to have make some adjustments.

I type these blog entries up in my text editor and then copy and paste up to the blog. Apparently my use of spaces between values doesn't transfer. In my last blog about horsepower, the chart definitely didn't transfer well. The first, left hand column should be the horsepower values, all 2 digit numbers in the range of 29 to 50. The second column should be titled "Number of Occurances". This means the number of times that horsepower value occured in the 150 data sets. This can be a one or two digit number. OK, you should now be able to translate that and I'll try and format this information on torque in a more understandable fashion.
------------Number Of
--Torque----Occurances
-------- ----------
23----------1
27----------1
28----------2
30----------2
31----------2
32----------11
33----------6
34----------7
35----------6
36----------13
37----------6
38----------9
39----------21
40----------33
41----------20
42----------7
43----------3
---------
150 total

Again, I restricted the data to between 4500 and 7000 RPM. For an undersquare, OHV, parallel twin, the peak torque and horsepower figures will occur in that range.

If you look at the torque distribution, altering only two attributes encompasses all three occurances of 43 lbs/ft of torque. First, an intake valve opening of less than 37.55 degrees. Next, an exhaust valve opening of greater than or equal to 65.6 degrees. Note that these are extrapolated values as they were not direct entries into the data sets. The intake valve closing event is conspicuous by it's absence.

The 7 occurances of 42 lbs/ft occur when two attributes are changed.Retarding intake valve opening, 4 of the 7 occurances, increasing intake valve diameter, 1 of 7 occurances, and advancing exhaust valve opening.

Damn, something I totally missed until looking at this again! If I maintain the duration of valve events, which I am, when I advance intake opening "x" number of degrees, I am also advancing intake valve closing by the same number "x" degrees! I THINK that the reason that intake valve opening is showing up first the "paths", is that it is FIRST in the data listings! Need to devise test to prove/disprove this assumption.If this is what is happening, then intake valve closing "could" be a very important event. I'll have to go back and review both the data and the methods. More later.