Repair of Stanley valve faces
Posted by:
Jeff Brown (IP Logged)
Date: January 27, 2009 02:27AM
Hi, I am gradually putting together a 20HP Stanley engine from parts with the aim of building a car the same way. It's a hard way to do things but does spread out the cost! The block I have is perfect - excellent threads, no cracks, and only about .003 wear in the bores - except for the valve faces which have been machined down to the flat surrounding them. I am wondering if it is possible to cut new valve ports in a piece of 1/8" plate and epoxy and dowel them into place. They could be lapped with the valves first. A friend of mine did a similar thing with a cylinder bore when he machined into the steam passage of a cylinder block where something shifted during the cast. He simply machined it oversize and epoxied a cast iron liner in place and it put in many years of work without problem. A valve face is a little different and I am not sure exactly what force would be trying to shear the epoxy. But with a dowel in each corner. I cannot see it moving. Of course, ther may be a problem with differin expansion amounts when hot. It would be difficult to do with cast iron - what would be the best material - bronze, steel??
I am still on the hunt for parts so if you have any spare 20HP parts you will never use and want to sell or trade ( I have an assorted collection of extras!) then let me know!
Thanks
jeff