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Old 05-09-2012, 10:04 PM   #3
DiabloADV OP
Joined: Oct 2010
Location: Nor Cal, USA
Oddometer: 2,336
Some strangeness...

Pistons measure 93.3mm. Cylinders 93.7mm.

Book says R90/6 is 90mm. 100's pistons are 93.96mm (or bigger for overbores...).

So...what the heck do I have here...?

Any help....?
1974 R90/6 motor w/1050 kit; twin plugged; installed in...1970 R60/5 frame; RM125 front end; KZ1000 Police Tank.
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