How many hours should you rebuild a 2-stroke?
The bottom end of a two-stroke can usually last around 70-80 hours before rebuilding.
Does my 2-stroke need a rebuild?
A damaged cylinder may need reconditioning or replating. The same goes for when you find your intake boot and airbox was not sealed properly. Anytime you find leaks, you’ll want to tear down and inspect for damage. Two-strokes are great and they can tell you when they need to be refreshed based on performance!
How many miles does a 2-stroke last?
If we’re talking the two most popular segments in the sno-mo-2-stroke market, the 600 and 800 class, we’ll jump into the 600 class first. A current garden variety 600 twin engine in the popular trail/sport category can deliver up to 12,000 miles (19,000 kms) of reasonable use.
How do you run in a 2 stroke after rebuild?
Break-In – When running your new top end for the first time, keep the engine slightly above idle, with slow and mild revs until the engine starts to get too hot to touch. Then, shut the engine off and let it cool until it is warm to the touch.
How many hours can you get on a 2 stroke engine?
Re: What are high Hours for an Outboard 2 Stroke? Pretty much the standard is 100 hours/year for “average” use. That said, if the boat is kept in the northern states, expect that number to more than likely be closer to 50-75. If it’s in Florida or in the deep south on the water, you can see as much as 200 per year.
Are 2 strokes easier to maintain?
For starters, 2-stroke engines are much lighter and also cost less to manufacture. In comparison to 4-stroke engines, they are also easier to repair. However, repairs are generally needed more frequently, unless you actively maintain the engine.
Why are two-stroke engines lighter?
Compared to four stroke engines, two strokes are lighter, more efficient, have the ability to use lower-grade fuel, and more cost-efficient. Therefore, the lighter engines results in a higher power-to-weight ratio (more power for less weight).
What is a top end rebuild?
Top end rebuild means redoing just the heads. That means valve guides, check/replace valves and valve springs. Piston, cylinders, rings, crank bearings, etc. are left in tact. On the 993, this also and usually mean clearing out the SAI passages in the head and also in the cylinder head housing.