I thought I would start a thread featuring my efforts to restore a massive 6 cylinder Wisconsin engine which that powered a 10 ton Lombard tractor from 1925 through 1933.
First a bit of background. During production Lombard used a variety of engines - at one time they even manufactured their own 4 and 6 cylinder engines with limited sucess. Most of the engines installed by the factory were sourced from high-end manufacturers including Wisconsin Motor Manufacturing Co., Van-Blerk and Sterling.
By far the most common engine were those made by Wisconsin. The engine I have is a model PT built in 1925. (s/n 1114) It was originally installed in a Model N Lombard tractor (s/n 3139) sold to Edouard Lacroix's Madawaska Co. From 1926 through 1933 this tractor operated out of Churchill Lake depot - deep in the heart of Maine's Allagash Wilderness - when it was abandoned. Today the chassis is in a private collection. During restoration the owner replaced the original engine with a identical engine which was found in running condition. Today it's the only gasoline Lombard in operating condition using the correct engine.
To make a long story short in November of 2008 I aquired the engine and begain the long task of bringing it back to life. Here are some of the specs.
T-Head 6 cylinder (cylinders cast in pairs)
5-3/4" bore, 7" stroke
4 main bearings
2-5/8" dia crank
110 hp @ 1200 rpm
8 gallons per hr. at full load
Like a number of high end cars of the time (Locomobile)The crankcase is is a 500 lb manganese bronze casting The total weight of the engine is 1575lbs.
When I aquired the engine it was in sad shape - all the brass and bronze pieces including the intake manifold, water fittings, lifter guides etc. had been scavanged many, many years ago. In fact all biut one of the valves had been bent to facilitate removal of the bronze lofter guides.
Amazingly the pistons were not siezed:
Here is a video of the tractor it came out of and how it will sound when complete:The Sweet Sound of a Lombard
I will post more photos later. The engine has come a long, long ways since these photos were taken!