How long does a yz250 bottom end last?

The last bottom end lasted 360 hours with the clutch at 400 hours.

How many hours is a YZ250 bottom end?

Mostly woods and Harescrambles should get about 350-400 hours on a Bottom-end .

How often should you rebuild a 2 stroke bottom end?

It's also important to keep in mind that if you're running your two-stroke on the lean side, it may need more frequent rebuild intervals. As a general rule, and especially if you're racing, rebuilding the top end - which includes piston and rings - every 25 hours would keep you in the safe range.

How many hours will a YZ250 last?

It might last 60-70 hours before kaboom, but for best performance, you are probably looking at about 30 hours.

When should I rebuild my dirt bike bottom end?

When to replace bottom end on a 2 stroke

If the crank has seized, then you absolutely need to replace the bottom end. If the bearings are worn out or the rod is bent, then it will either need to be rebuilt or replaced.

Yamaha YZ250

How many hours is alot for a 2 stroke dirt bike?

You should be good for another 10-15 hrs assuming PO regularly cleaned air filter and did not abuse the bike. Good news is a two stroke top end is so easy a child could do it. Plus, less actual parts to replace (piston, rings, gaskets - done).

How much does a bottom end rebuild cost?

So how much does a full rebuild cost you when you do it in your own garage? When you are using OEM parts, which includes all new bearings throughout the engine, a cylinder head, new valvetrain, new crank, new piston, new cam chain and tensioner, and a freshly honed cylinder, the cost comes to $1300 to $1500.

Is 100 hours on a dirt bike a lot?

What Is Considered High Hours on a Dirt Bike? If you're a dirt bike enthusiast who casually drives the motorcycle from time to time, 100 hours is considered high hours.

How long does it take to rebuild a yz250?

do about 10hrs and even then it looks good coming out. Coolant, if you are not losing it, its good for a long time, just keep eye on level. Don't recall any of the yz's having magnesium parts in the water pump area, those kinds of bikes are different story.

How long does a 2-stroke piston last?

While a 2-stroke Piston motorcycle can last over a hundred hours for a rider if it's handled simply and maintained properly, an aggressive racer will wear out a top-end in less than 20 hours of riding.

How long will a 2 stroke engine last?

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. Reasonable use includes using good quality injector oil, regular servicing of the exhaust valves and annnual clutch maintenance.

How do you know when a 2 stroke needs a rebuild?

Shine a light in there and see if there's any noticeable scratches. You can look at the piston as well, but any scratches/scoring that looks like something you can feel with your finger nail is damage and will most likely need repair/replacement.

What is the best year for the YZ250?

Yamaha YZ250. What is this? Yamaha is the only Japanese manufacturer that still imports their two-stroke motocross bikes to the U.S.. They have had it together the entire time, but the YZ250's best years are 2005 and newer.

How long can you ride a 2 stroke dirt bike?

In a casual riding environment, a 2-stroke piston can last over 100 hours, but in a competitive riding environment, a top-end can wear out in less than 20 hours.

How long does a 4 stroke dirt bike engine last?

A 4 stroke top-end can last 500+ hours of casual riding if it's properly maintained. You can also wear out a top-end in less than 20 hours if you're riding it hard and constantly hitting the rev limiter.

How long does a dirt bike engine last?

An average dirt bike engine should be able to last from 1 to 5 years. Sometimes it may last even longer, depending on how well the engine is being taken care of.

What is high mileage on a dirt bike?

As a general rule, high mileage for a dirt bike is around 15,000 to 20,000 miles. However, depending on the driving conditions and the driving style of the owner, even 6,000 miles can be considered high mileage.

How long does it take to rebuild a dirt bike?

It generally takes for a four-stroke top end to have a functioning rebuild between 25-30 hours, primarily depending on the condition of your bikes, and on whether or not you prefer riding dirt and on a 250F.In a 450, or if you are driving it under easy conditions, it will suffice to rebuild the top end between 30-40 ...

What causes bottom end failure?

Bottom end failure is likely to be caused by lack of oil, or poor quality oil. The bearings are just shells with an interference fit, so they depend heavily on oil. They are not needle roller or ball bearings which are more tolerant of lack of lubrication.

How much does it cost to rebuild a 2 stroke dirt bike engine bottom end?

It costs about $2500 to $4,000 for parts and labor to rebuild an engine. Replacing bearings and seals, obviously removing and reloading a power supply, and reassembling the engine are part of this type of engine repair. There is a possibility that the price will be much higher.

Do rebuilt engines last long?

A rebuilt engine gets better gas mileage than your old one and will emit fewer pollutants. Rebuilding engines also saves energy related to processing discarded engines and cars. A remanufactured/rebuilt engine, with proper maintenance, is capable of lasting as long as a new car engine.

How often should you change a piston on a 2 stroke?

Most modern two strokes / four stroke Motocross/Enduro motorcycles recommend piston and ring replacement at 15 hour or 5-6 race intervals. Just because the kick starter feels firm or it starts easy, it still may be time for maintenance.

How often should you change oil on a 2 stroke dirt bike?

Yes, it's absolutely important to change the oil and oil filter on your dirt bike regularly. Change it every 15 hours. At least.