flat head

I’m building a gokart out of an old Murray push mower and I’m gonna use a vertical shaft 4hp Flathead but if I build the motor can I run a 5hp horizontal crank and rod in it and still run it vertical or will I have to make modifications?

Ok so I picked this up and prolly way over paid. But I have been wanting one for ever and I’m debating on a full restoration. Or just spray paint it and restomod it. The number on the back drop out is hard to make out they put the paint on thick on this one, as in the last owner but I think it...

Hello, I have a Briggs flathead that I would like to convert to gas for a mini bike I have, I had bought this engine and a few other engines and parts from an estate sell. so I don’t really know much about the engine,it looks to be open modified to me but idk. I believe it ran on alky before...

Hello, just recently I had bought a few Briggs flathead engines that look to be built modified engines that are complete. They have been sitting far about a year from what I’ve been told, My question is how can I find out what fuel these engines were ran with? They all have tillotson like...

I finally got my raptor running, but need some help to work out the bugs. I purchased the engine used, and it's been sitting for at least a year. It starts easily and idles well after a brief warm up, but when the throttle is applied, the bike barley crawls and this is with no one on it. It...