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I make my valves from stainless steel screws/bolts. This reduces waste and time. The valves shouldn't be too tight in the guides, especially for the exhaust valve, as the valve will tend to run hotter than the guide
Nice job on the valves. A bit more complicated than making them from a single piece, but you do whatever it takes. I envy your ability to grind the valve faces. I have to turn mine, and it always leaves micro ridges I have to lap out.---Brian
Private video here, no can see ..... Dave
Quote from: Bluechip on August 21, 2019, 09:48:17 AMPrivate video here, no can see ..... DaveDavePlease try againPete
I’ve had the usual problem of getting the valves lapped and being able to test them. Lapping and reassembling on the cylinder and using the piston to check it they had sealed was getting a bit tedious. Taking them on and off coupled with knowing what properly lapped should look like.When they went back on the heads and the piston pushed against the closed valves it was clearly a marked improvement.Question – what degree of sealing am I to expect with these valves? Should they seal completely, say similar to a ball bearing clack valve? I'd guess that is ideal but is it really achiveable? Do they bed themselves in once the engine is running?Pete