I have gotten alot of comments when I posted this on another forum about 2 stroke outboards. I'm not interested in that. It's a totally different engine. It's carbureted and a 4 stroke is fuel injected.
Take a 1998 SUZUKI DF70 for example. It's practically the same engine that was in the 1998 Suzuki SWIFT car. Engineers made a modified intake manifold, a modified oil pan, put the fly wheel on the front of the engine instead of the back, no harmonic balancer, a cast aluminum modified exhaust manifold with water jackets to keep it cool and from melting the hood/engine cover, and the engine is mounted vertical instead of horizontal, like in the car.
I received several comments (and I welcome ALL comments) that stated if you opened up the exhaust on a 4 stroke engine it would melt/burn the pistons.
First, many assumed that one would remove the water cooled exhaust manifold and replace it with open headers or something to that effect. Not the case here. Simply put, I'm thinking of modifying the stock water cooled exhaust manifold.
If opening up the exhaust to create more power would cause a lean condition resulting in burnt pistons, then the person that put headers on a 4 cylinder Honda Civic, or V8 Camaro, or any other 4 stroke fuel injected engine........ would have burnt up their engine a long time ago. The computer(ECM) compensates for the added air flow and adds more fuel.
Take a 1998 SUZUKI DF70 for example. It's practically the same engine that was in the 1998 Suzuki SWIFT car. Engineers made a modified intake manifold, a modified oil pan, put the fly wheel on the front of the engine instead of the back, no harmonic balancer, a cast aluminum modified exhaust manifold with water jackets to keep it cool and from melting the hood/engine cover, and the engine is mounted vertical instead of horizontal, like in the car.
I received several comments (and I welcome ALL comments) that stated if you opened up the exhaust on a 4 stroke engine it would melt/burn the pistons.
First, many assumed that one would remove the water cooled exhaust manifold and replace it with open headers or something to that effect. Not the case here. Simply put, I'm thinking of modifying the stock water cooled exhaust manifold.
If opening up the exhaust to create more power would cause a lean condition resulting in burnt pistons, then the person that put headers on a 4 cylinder Honda Civic, or V8 Camaro, or any other 4 stroke fuel injected engine........ would have burnt up their engine a long time ago. The computer(ECM) compensates for the added air flow and adds more fuel.
