I borrowed this heavy duty valve spring compressor from fellow car buff Don. It was needed as the valve springs on this engine are very stiff.
The springs are doubled with an inner spring. Two were extra hard to compress for some reason. They happened to be the only two with damaged oil seals. Oddly there was only the O ring style rubber seals in place – no umbrella seals at all. The number relates to the cylinder they were taken from.
Lots of carbon especially on the intake valves likely from absense of umbrella seals on the stems. The Exhaust has more than normal carbon deposits. The faces look OK.
The valve chambers are not carboned up and the valve faces don’t look too bad.
I cleaned the valves with my electric wire wheel being careful not to his the valve faces. I then lapped the valves with proper lapping compound and a lapping suction cup on my drill at low speed. I ran it for a bit until the sound of grinding stopped then I lifted the valve to get more compound on the face and lapped again. I did this for four times then added more lapping compound and did it again. There are a some dark spots on the exhaust valve, but the intake is nice and clear.I will try lapping the exhaust valve a few more times to see if they clean up a bit better. If not I’ll go with them as is. This is not going to be a high mileage engine and since I live in the country it should run clean.
Next: ridge reaming and checking the cylinder run out.