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So to the question: if I change the final drive from 4.83 to approx 4.25 it seems as if I must also change the FRONT differential drive too -- correct? or am I mistaken?

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        Yes you would also have to change the front diff final drive as
well as the speedo gearing (I believe). But you might consider looking for a
different set of 3 and 4th gears.... Since you are planning on rebuilding
the tranny, this seems like an easier and more effective option assuming that
the "super strength" off road racing gears that I have seen offered would
work in a syncro tranny...

dave
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From owner-vanagon@VANAGON.COM Wed Oct 14 14:47 PDT 1998
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From: Michael Sullivan <sullivan@OPENMARKET.COM>
Subject:      TDI gearing changes?
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Dear List,

If I install a 1.9L TDI in my Syncro it seems as if I will have to reduce the final drive somehow by approximately 88% to keep the effective speed per rpm ratio.

Current wasserboxer redline = 5200rpm

Current wasserboxer @70mph = 4000rpm w/ 27"x8.5 tires

Future TDI redline = 4600rpm

Future TDI @70mph = 3550 w/ 27"x8.5 tires

So to the question: if I change the final drive from 4.83 to approx 4.25 it seems as if I must also change the FRONT differential drive too -- correct? or am I mistaken?

Is there anyway else to do this (other than adding "monster" tires)?

How about changing all the gear ratios? (I'm gonna rebuild it anyway)

Cheers,

<bold>Michael J. Sullivan

</bold><italic>Director of Catalog Design

Open Market, Inc.

</italic>

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