This is a Leroi 2 cylinder gas engine I picked up at an auction.

Engine with mag disconnected and carb removed

Brass tag on governor area of engine

Logo on brass tag

Part of the carb with the butterfly removed

Nice crack going almost entire length of carb body

Carb pieces with round stock for new venturi on left

I fixed the crack in the carb body with JB Weld

Didn't get the crack filled very well but should still work just fine

Suction tube or idle jet that needs replaced. The tube is about ready to separate from the threaded fitting. If you look real close you can see the cracking.

Close up of the venturi pieced together after being hacksawed out of the carb body

All the pieces for the venturi. I think this pot metal? cracked and expanded blowing out the side of the carb body.

Water hopper/head removed from engine

Piston and Valves, note mouse nest in upper left

Exhaust/Intake manifold removed, exhaust ports full of rust flakes

Here's the pile of rust that was removed from the exhaust ports and manifold.

Below are various shots of the carb I'm trying to identify to locate the broken 'suction tube' (shown above) I need.

 

I gave up trying to locate a replacement for the broken tube and decided to fix the one I have. I bought some 1/8" brass tubing and drilled a 1/8" hole about 3/16" deep into the fitting. To get the tubing into the fitting after drilling I had to gently tap it in there. Was a very slight press fit. Probably didn't need any solder, but put just a bit around the joint.

 

Here is the new venturi for the carb on the left that I turned on the lathe.

 

The eight pictures below show the valves and accompanying seats. First is the left side exhaust valve and seat (seat looks pretty bad!), second is the left side intake valve and seat, third is the right side intake valve and seat, and last is the right side exhaust valve and seat (seat looks pretty bad!). I had a valve job done at a local automotive place for $20. I was very satisfied with the results.

 

After assembling everything I got it to run fairly easy. It ran smooth and sounded great. I added some water to the hopper and wasn't happy to see bubbles. That meant I had a bad head gasket. I bought some Permatex to help seal it up. I tore the head/hopper back off and when I was cleaning up the gasket surfaces I noticed a crack in the block. Below shows the pictures of the crack, the welds I put on the cracks, and picture while I was filing the welds back down smooth.

 

Below shows the LeRoi at an engine show belted to a fairly large blower. The blower really makes the engine work and the water in the hopper boils after about 15 minutes of running. I still get a few bubbles in the water hopper while the engine is running from the head gasket or cracks in the block. I've let it get good an hot and then sit for quite a while. It isn't enough of a leak to allow any water back into the cylinders. I'm happy with the results so will call it good.

 HOME