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Old 03-06-2009, 01:07 PM   #59 (permalink)
Deezler
Master EcoModder
 
Join Date: Apr 2008
Location: Michigan
Posts: 261

Bio Deezler (sold) - '03 Volkswagen Jetta GLS TDI
90 day: 50.78 mpg (US)

The Beast. - '03 GMC Sierra 2500HD SLT
90 day: 12.86 mpg (US)
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Thanked 36 Times in 22 Posts
They only got the rpm down to 1800 @ 61 mph?

Even if they kept the MK4 transmission, simple math shows that a 0.658 5th gear swap combined with the 3.16 pinion final drive would get the rpms down to ~1678 @ 60mph. Of course, that is with the MK4 sized wheel/tire (say, a 205/60/16). I don't know how much smaller the rabbit's tire diameter would be.

This is a fun project to watch.
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