I sent this out yesterday but it appears to have found it's way into the e-mail
black hole on our server. Apologies to anyone who has suffered through it twice.

Thanks to Eric Oster for the ratio data for microbuses. Here is the updated
index.

                           VW Bus Relative Wear Index
                           
                           
                           
                           
    Year | Top Gear  |  Final Drive | Engine Revs | Stroke | Piston Travel  
         |  Ratio    |   Ratio      |   /Mile 	  |        |     /Mile
   ________________________________________________________________________
  Micro  |           |              |             |        |
  1200   |    0.82   | 4.125 x 1.39 |   3719      |  64mm  |   1571 ft.
  Micro  |           |              |             |        |
  1500   |    0.82   | 4.125 x 1.26 |   3371      |  69mm  |   1525 ft.
  Micro  |           |              |             |        |
  1 ton  |    0.82   | 4.375 x 1.26 |   3575      |  69mm  |   1618 ft.
         |           |              |             |        |   
   68-71 |    0.82   |   5.375:1    |   3484      |  69mm  |   1577 ft.            
 72-73.5 |    0.82   |   5.375:1    |   3484      |  66mm  |   1509 ft.      
  73.5** |    0.89   |   5.375:1    |   3781      |  66mm  |   1637 ft.  
  74-75  |    0.89   |   4.857:1    |   3416      |  66mm  |   1479 ft. 
  76-79  |    0.82   |   4.857:1    |   3148      |  71mm  |   1467 ft.
  
  
  ** From chassis # 2x3 2068 548
  
  
  
  Hey, these numbers are almost all the same! Coincidence, or by design?
  
  
  In an effort to BAIT you Vanagon and EV owners into opening that Bentley and
  mailing in ratio info I am going to SPECULATE that the lowest wear index #,
  down close to 1400 ft./mile will go to the 1.9 wasserleakers (wear index has
  nothing to do with head gasket life, sorry.) and that the highest, pushing
  2000 ft/mile, will go to the willing little diesel.
  
  So, C'mon and prove me wrong! Send in the top gear ratio, the final drive
  ratio, the engine stroke and the tire size (if it's an EV)!
  
  
  Thanks in advance!
  
  Dave Kautz
  dkautz@hpsidms1.sid.hp.com