OST-018: REVIVAL

[oldeskewltoy]

unfortunately... at least for the time being OST-018 is sitting on the "too be determined" shelf. 4 of 8 intake guides, and 3 of 8 exhaust guides show excess wear. I've checked the corresponding wear patterns in the valves. I measured the worst 2 intake valves, and the worst exhaust valve. The intake valves stem diameters were between 5.93 and 5.94mm minimum stem diameters(FSM) 5.97mm to 5.985mm. The exhaust valve measured 5.94mm, the spec for the exhaust valves is 5.96mm to 5.98mm. Since so many of the valves, and guides are bad, there is no economic sense to build this head further...........

I'll begin another shortly