Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I have the four cylinder H75 version and it has been full of problems. First time I put water in the cooling system it was pouring out of two joints in the water manifold under the spark plugs, so I soldered those two joints. Put water in again and looks like no leaks until I find that I’ve filled up the crankcase with water this time. Lower o-ring on the first cylinder is leaking. Take it all apart and replace that. Not really sure why I bothered fixing all the leaks anyway since the fuel tank is so small it doesn’t even run long enough to make much heat anyway. It also only has good compression on two cylinders. One cylinder has almost no compression when cold, but after a run it does. The rocker arms are so sloppy, it very hard to get a decent adjustment on them. My water pump was also plugged up with some kind of small piece of goo which made it very difficult to fill the system with water until I found it. I also had to shim the radiator up because the fan would bind on the top of the fan shroud. Not real impressed with this thing, but it is pretty to look at… Glad I got it relatively cheap on eBay.