Search results

Petertha, Gail Graham's simple but excellent external hone is shown on page 25 of MEB issue 25. The drawings are included in the same issue. Jeff

Ron is so right. Drill rod is not round. Some years ago Model Engine Builder magazine had an article on hones. The shaft hone looked simple enough to make. I made one and it does an excellent job at truing up ground shafting. If you need the tightest fit, a shaft hone will take off the shaft...

Mark, Do you think your gasket cutter would work with .015" Teflon gasket material? Jeff

Rudy, For what it is worth, in Google Books I found the valve timing of early 325 RPM Titan and Mogul throttle governed engines which were built in single and twin cylinder configurations with mechanical and automatic valves. The intake valve opening duration for automatic intake valves was...

Gordon, How are your Snow modifications coming? Jeff

Persistence pays off. Congratulations! Jeff

In my experience replacing a flywheel with a heavier flywheel of the same diameter yields only small operation improvement. However, changing to a larger diameter flywheel usually does improve running. The most effective mass of a flywheel is at the rim. Foos, Otto, Nash, etc. electric lighting...

Gordon, At the time Doug, and many others, built the Snow engine a company in FL called MJN Fabrication was selling all the Bruce Satra designed ignition components including the distributors. Many of us bought the distributor bases with a set of points installed. The four lobe ignition cam is...

Gordon, Sorry, no idea of the cause of the variation. However, the camshaft flats at 90⁰ sounds like a good idea and probably would work on a shorter larger diameter camshaft, but I found precise cam lobe adjustments on this long small diameter camshaft to be very sensitive. You will still have...

Gordon, Set screws are a problem indeed. I ran across a this set screw tightening recommendation: To tighten new, standard, alloy, cup point set screws, install an allen wrench with the short end in the socket, long end in your hand, and tighten until the wrench bends or twists about 30° (1...

Gordon, If you don’t have a pressure gauge that holds the highest reading, it is normal to see the compression pressure or vacuum bleed off rather quickly through the ring gaps. No flywheel bounce back is puzzling unless your engine hasn’t been run much. If you crank your engine with a portable...

Gordon, I posted a while ago here about my problems with the Snow and in particular an issue I took with the intake manifold design. It quickly gets very cold upon engine start. Many engines would run a short time and then stop. Mine started doing this later on, but not initially. The cold...

Gordon, How did you determine the air leak past the piston was from the piston rod clearance and not the piston rings? Jeff

Good idea Gordon. My seals (no garter spring) measure .122-.124" thick and adding a head gasket space of about .012" would leave a seal pocket depth exposed to compression and combustion pressures of about .017" between the seal and rear of the bushing (.470 - .340 - .125 + .012"). This would...

Gordon, I am presently rebuilding my Snow engine also. Previously I had made a number of changes to my engine and had it running quite well and slowly. Combustion had improved to the point where the exhaust was dry. It was burning the oil in the fuel to the point where it was creating blue...

Kyle, I have never experienced difficulty reaming 12L14. You should only remove .008"-.015" with a chucking reamer. No more. There is very little chip space in reamers so light cuts work best. I prefer to drill, bore, and then ream for straightest bores. However, in my opinion reamers rarely...

What you started to describe sounds a lot like the radial flux permanent magnet alternators often built by the DIY wind energy folks. These are usually powered by low RPM wind turbines generating low voltage AC which is rectified to DC and then modulated at a usable DC voltage. I think you will...

Terry, Sorry, I forgot you don’t need any oil pressure to the bottom end. Okay, so you add a low pressure by-pass valve directly to the pump discharge. Use a generous sized relief port discharging straight down and the pressure adjustment screw access facing horizontal toward the pump case...

Why couldn't a flow limiting orifice in the line or lines to the heads be used to control excess oil flow to the top end? Jeff

I would use Santoprene thermoplastic tubing. It is black and can be heat formed into tight radius bends just like automotive hoses. You can get it from MSC or McMaster Carr. 1/4" ID is available. Jeff