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ayglass ayglass is offline
Registered User
Join Date: Aug 2006
Location: Cleveland, Georgia
Posts: 149
It looks as though there is a shim adjustment side to side as well. This is the "backlash" adjustment. From what I'm told, the pinion depth is set with the special tool based on the "r" number stamped on the end of the pinion. The backlash is set by feel or measuring the free rotation at a certain point with a dial indicator. This is something that can be set pretty easily.

Of course, without the "r" value on the head of the pinion, the whole thing is out the window anyway. You can't use the special tool without that value, so it's back to "old school" methods printing the pattern of contact between the gears and adjusting for the best pattern. I'm a little hesitant on both counts. Cash on one hand and risk on the other.
Andy Glass
'86 930 Kokeln IC, K27-7200, SC cams, GHL headers, Fabspeed muffler, Short R&P , misc other mistakes made...
Old 11-11-2007, 04:18 PM
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