Werowance--I have a set of store bought points that have been damaged, but the contact buttons on them are brand new. I would like to unsolder the contact buttons from their original point set and re-solder them to my brass strips and bolt head as per the Upshur plans. What kind of solder did...
After a couple of days of "sluffing off" (which I enjoyed very much), I went back to work on the engine today. The valves had to all be reground to match the new valve cages. I was able to get a drill in thru the exhaust tubes to drill exhaust ports in the side of the new exhaust valve cages...
Cylinder heads have been re-bored to accept new full length valve guides. New valve guides have been fabricated and installed in cylinders after being coated of J.B. Weld. The new threaded insert I made for the sparkplug is installed in the cylinder head, and seems to work fine. Everything I...
I've ran into a problem here with how well my valves seal---or not. Every previous engine I have built used full length "valve cages" in which the valve guide section and the sealing face were all turned from one piece of brass. This engine is designed differently, whereby the valve guides are...
Okay, for what it's worth---The new threaded insert is in place. In the picture you can see a "driver" that I used to screw the insert into place after the aluminum cylinder head was threaded 3/8"-16 and the home made threaded insert was coated with J.B. Weld. Then the driver was unscrewed...
The sparkplug thread repair is under way. What you are looking at is a piece of steel threaded 3/8"-16 unc on the outer diameter and 1/4"-32 on the inside diameter. The sparkplug screws into it just fine. Now the question is "Will I be able to tap a 3/8"-16 unc thread into the aluminum cylinder...
Steamchick--I have very little going on in the rest of my life. I spend my time either reading for entertainment or working in my shop.---and occasionally taking good wife out for a meal.---Brian
Today, the engine sub base became a gas tank. Not a lot to say about it---a lot of hogging out on the mill, a cover plate drilled and counterbored to fit, and a bead of J.B. Weld all around before the screws were tightened up.
Today I made the nylon points mounting block, the brass ignition points mounting assembly, the ignition cam and opened up a few clearance holes on the main crankcase assembly. It's a beautiful day here in Ontario, bright sun and 70 degrees F. Wife and I went to a take out restaurant and then...
Yowzah!!!--I rooted around in my plate stock and found a sheet of 0.030" brass plate. That will do to make my ignition points arm and the piece that attaches to the ignition rotor. I have enough black nylon left to make the block that holds the other side of the ignition points. I need to make...
Today I will take a crack at making the cams for this engine. These cams do not have a curved flank, so they should be easier to make. I have attached a sketch of the finished cams which will be made from 01 steel and hardened. Lucky for me, I have a piece of 1/2" diameter 01 material on hand.
So, today I made valves. Very small valves. They still have to be cross drilled with a 0.039" hole at the ends for the valve keeper cross dowels.---And I lied!!! Sometime or other I must have made this size of valve before, because in my box of George Britnell wonderful valve seat cutters, I...