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Old 02-12-2010, 09:54 PM
  #637  
lowcel
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I'm going to be switching motors on my car (running mmp) and I'm curious about the gearing difference. I'm going from a Duo 2 to a Ballistic 17.5, does the ballistic need to be geared any different?

Next question, how can I tell what rpm my car is at certain points? I'm experimenting as much as possible to get the most out of the mmp but I'm not having much luck yet (compared to the people running tekins). I just can't keep up with the tekin's on the straight or the full throttle sweepers.

Right now I am trying the following:

T3
FDR - 6.26 (also tried 7.09 and 7.34 this evening)
CHEAT - 50 degrees 3,800 - 7,700
Temp is about 180 at the end of six minute runs.

I was trying fdr's in the mid 4's to low 5's and that was getting way too hot when going above 25 degrees timing.

Our track is 80x48 and the track is pretty fast, the sweepers and backstretch are full throttle, it's basicly an oval with a turnoff in the middle to do some on road so top end speed is pretty important.
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