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...?
1974 R90/6 w/1050 kit. Motor only. Seeking a frame.
'91 Bill Holland Steel w/Dura Ace
'01 Z3 3.0 Coupe. The Clownshoe.