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Old 07-14-2012, 09:29 PM
  #1792  
6376vette
Tech Master
 
Join Date: Jun 2011
Location: Northeast GA
Posts: 1,685
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Originally Posted by team mopar
To the guys running at 21.5's in 64 pitch. What gear combo is working for you?
The car has the 19t center sprocket to loosen the belts so the puts me at 2.0
Im running a 90 spur and a 49 pinion came off track at 220°! Knocked pinion down
to 45 and came off at 200°!! With a heatsink only no fan.Must tell you this is a used motor a internet purchase. Zero is in vta class this what they're running at this one track i go to. I know it should be a 25.5 class.
What you do ya think? P.o.s Ballistic ? Or total gear change
I run 88 spur with a 46 pinion. Not too far off of your gear. I come off at 140 with a twin fan. 168 when the fan comes unplugged.

Check for binding in the drive train. If all is loose try to figure out if you have any tire slip. Even a very small amount of breaking traction can heat up a motor. I dropped 30 degrees by eliminating a very small amount of slip.
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