Chrysler Repair: Chrysler 3.0 V-6 Valve Job, limit 0, valve job

Question
Hi Roland:  I need to order some valve seat grinding stones to replace some that are worn out.  Would you have access to a specification for the diameter of the intake and exhaust valve seats.  Sioux offers a large variety and I'd like to get a couple on order before I yank the heads. Thanks. TG

Answer
Hi Tim
I couldn't find a spec in '89 or '94 manuals but a '98 van manual gives the valve head diameters as:
intake 48.64-48.90 mm
exhaust 40.01-40.26 mm

The margin of the valves is:
intake 1.2mm , service limit 0.7mm
exhaust 2.0mm , service limit 1.5mm

The valve seat  angle is 44..0-44.3 degrees
contact width 0.9-1.3 mm
sinkage service limit 0.2 mm
guide bore diameter (std.) 7.95 -7.98 mm

The rest of the specs are for springs, stems, and guides.

I hope one of these is relevant.

Roland