Hi All,
Mark,
Thanks for the info on the A65 valves etc,
I have a long term project with a 1925 Chater Lea that has an ohv Blackburne engine, It had been bodged beyond all recognition inside the engine
Anyway it turns out that A65 valves are almost identical in length and head size to the Blackburne
The A65 stems are smaller so I made new guides to suit,
However the standard A65 exhaust valve sits very near the inside of the valve seat, which is why I am looking for one a couple of mm bigger!
I have a couple of "Goldie" valves which I can turn down and the radius tool for the groove,
As you say hardened caps will sort the valve tips
I was looking for an easy way out
On the gas speed subject, I used to have a Morini 3 1/2, Those things really flew with brilliant handling
Apparently the designer had a major "thing" for gas speeds
Heron heads, that had what looked like "small" ports
The exhausts pipes were double skinned as well
Cheers
John O R