Speedo tweaking

Mark J. Besso mbspeed at maxboostracing.com
Sun Nov 11 06:30:31 PST 2007

Does the white car have the OE-sized tires or have they got a slightly lower

Also, tires from different manufacturers aren't consistent.  A Dunlop may be
slightly taller than a B.F.Goodrich, for instance.

Try swapping tires from your black car and measuring the accuracy again.


-----Original Message-----
From: Cody Forbes
Subject: Speedo tweaking

Anybody have experiance calibrating thier electric speedo (5ktq
specifically, but I bet most are simmilar enough)? My white '87 5ktq is
reading about 10% fast when compared to the average speed display (reset
then see what the first valve displayed is and compare to current speed). I
don't want to end up pulling the cluster 10 times while randomly screwing
with the DIP switches, so hopefully somebody out there knows the

-Cody Forbes
'87 5ktq - Fast.
'87 5ktq QLCC'd plus some
'86 5ktqCD
'86 5k
'86 5k

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