D5xx 250ci Head?
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Howdy Back:
It's there. It is a transition head with 1.69" intake valves and 1.38" exhaust. It will have a 1.75" carb hole and aproximately 62 cc chambers. It may, or may not, have induction hardened valve seats on both the intake and exhaust. Most likely the exhaust will have hardened seats. D7 and later heads will have induction hardened seats on both and 1.75" intake valves. Larger valves can be added to the D5xx. The only way to know on the valve seats is to clean them up and look for heat coloration.
Adios, David
It's there. It is a transition head with 1.69" intake valves and 1.38" exhaust. It will have a 1.75" carb hole and aproximately 62 cc chambers. It may, or may not, have induction hardened valve seats on both the intake and exhaust. Most likely the exhaust will have hardened seats. D7 and later heads will have induction hardened seats on both and 1.75" intake valves. Larger valves can be added to the D5xx. The only way to know on the valve seats is to clean them up and look for heat coloration.
Adios, David
