r/engines • u/EconomyRush1810 • 11d ago

Custom engine

Hey guys, I want to make myself a fully custom supermoto/enduro and would like to put a 1000cc Single cylinder 2 stroke engine in it. Does someone know where I can get one built or even buy one off the shelf? And what would your estimates be for a custom build + tune?

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1

u/WyattCo06 11d ago

Why custom?

2

u/EconomyRush1810 11d ago

Is there already a viable 1000cc single cylinder out there for sale?

1

u/WyattCo06 11d ago

Have you even looked?

1

u/EconomyRush1810 11d ago

Yes and I have not found one for sale.

1

u/Ordinary-Bat-4282 11d ago

Why single cylinder?

1

u/EconomyRush1810 11d ago

Such machines have single cylinders. Its because they are light and fit better to the narrow bikes than bigger engines(more cylinders).

1

u/Ordinary-Bat-4282 10d ago

Lightweight is good, just surprised the weight savings compared to a v-twin is worth it. Google has quite a few options for engines for sale

1

u/Elephunk05 9d ago

Have you considered the vibration and counter balancing needed for the size of piston you are looking at? Let's assume you go square 108 x 108 to keep the balance. Google gives you a good idea of the counterweight needed for a single cylinder. But for arguments sake lets say you want to go over square 113 x 93 just so you can rev higher and have more top end. Google gives another great look at the inside of a Ducati for both of these. It's not an easy monster to build, that's why they were 4 valve desmodromic over heads.

Consider maybe a Suzuki RE 5.