Hello all, just found this forum and thought you'd be interested in a engine I recently got my hands on, it was a non runner with no compression, it now runs and can be started first time on the handle, it gave a good fight to get this far though.
This is a large engine with a 4.5" bore and 6" stroke, the flywheel is 23 in diameter and solid. This is a reverse rotation, direct injection, cold start diesel. I am guessing it is about 6Hp at about 600RPM though RPM is adjustable via a knurled thumb wheel on the govenor. As you can see it's a radiator cooled model with cooling fan and oil bath air filter. This engine was built in 1935 and was extremely advanced for it's time.
Please ignore the makeshift exhaust!
I removed the head and piston to find all 5 piston rings were stuck fast, This explaind the lack of compression. They all freed up no problem at all and the compression is now excelent.
The crown of the piston at TDC.
And the cylinder head, as you can see there is no access to the valves when the head is off. The valves can be removed and fitted with the head in place. They are located in their own housings at either end of the head. It's a true cross flow design. The crown of the piston goes right up into the cylinder head and nearly touches the injector.
The CAV Diesel pump I've dated 8836FB at May 1935.
Given that the flywheel is 23" I was a little unsure of the timing marks. The FI mark is only 1" ahead of the TDC mark. Spill timed to this the engine wouldn't even fire, adjusted to about 4" ahead get's the engine started. That makes it about the same as a Lister CS diesel. So what is the FI mark?
The lovely cast makers badge
The cylinder head, Inlet to the left, Nationals own injector in the centre, and the exhaust exits underneath on the right. The rockers are wick oiled from pots on each rocker cover.
The govenor assembley, shame its all covered up really?
This is the massive big end arraignment with cast in white metal bearings, there is a dipper in the bottom bearing, and the con-rod has an oil way all the way to the top to oil the little end.
This is basicaly the same engine as Russell Newbery use in twin, tripple, and quad form.
Hopefully you'll all find this interesting, I have a big old 1930's Brook 3KVA 230V ac generator to be driven by it. It should look good when done.