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View Poll Results: best way to break in a bike?
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Old 03-12-2009, 01:09 PM   #21
Hooligan
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Ride the out of it.

All that talk about breaking in is just mumbo jumbo, I wheelie it out of the parking lot




Change the oil at 600miles
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Old 03-12-2009, 03:35 PM   #22
urbanXJ
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combo/hybred ride in in all RPM ranges in all gears under load.

Seems to have worked well for me.
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Old 03-12-2009, 05:51 PM   #23
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Originally Posted by Intrinzik View Post

It's my theory that fast break in may actually make a faster bike, but the cost is that the engine will not last as long. The engineers at our favorite manufacturers want us to get the longest most reliable performance out of our machines - not perform for a limited number of track runs before getting rebuilt like race teams do. Our stuff is plenty fast, why not get the reliability out of it too?
This is a flawed theory.

If you take two bikes of the same class, make, model, year, milieage, etc and one is faster that the other, the faster one must have a stronger engine. A stronger engine means higher compression which means better engine sealing which means in general, the faster engine will last longer if both were treated the same afterwards.
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Old 03-13-2009, 04:47 PM   #24
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Quote:
Originally Posted by didimao0072000 View Post
This is a flawed theory.

If you take two bikes of the same class, make, model, year, milieage, etc and one is faster that the other, the faster one must have a stronger engine. A stronger engine means higher compression which means better engine sealing which means in general, the faster engine will last longer if both were treated the same afterwards.
Your point about compression is well taken, however it tends to validate my theory, not disprove it. During a "hard" break in the rings (theoretically) seal better. This improves compression, however, in all my years of wrenching I have rebuilt very few engines because of poor ring sealing and low compression. Besides, low compression is almost always caused by valve problems, not ring problems.

Low compression is also the least of the problems encountered by most drivers. Most catastrophic engine failures are the result of blown head gaskets, valve spring failure, lifter failure, or crank bearing failure. There are myriad reasons why these parts fail, but it could well be that during a "hard" break in these other parts do not break in as well as during an "easy" break in. So, while a "hard" break in results in a "faster" engine at first because of high compression, the trade off is that the engine doesn't last as long. My point was, that unless you are a racer, the minimal extra power you get is not worth the trade-off.

Also, I'll be the first to admit I'm no expert. My experience is with cars and trucks, not motorcycles. I was a mechanic and have built several engines, none of which were intended to be used on a track. Also, this is just my opinion and I could very well be wrong. You have a great point and I'm sure somebody could flame the out of both of us for being ignorant.

I wish there were a real engineer here to put and end to the discussion.
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Old 03-13-2009, 05:11 PM   #25
didimao0072000
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Originally Posted by Intrinzik View Post
Your point about compression is well taken, however it tends to validate my theory, not disprove it. During a "hard" break in the rings (theoretically) seal better. This improves compression, however, in all my years of wrenching I have rebuilt very few engines because of poor ring sealing and low compression. Besides, low compression is almost always caused by valve problems, not ring problems.

Low compression is also the least of the problems encountered by most drivers. Most catastrophic engine failures are the result of blown head gaskets, valve spring failure, lifter failure, or crank bearing failure. There are myriad reasons why these parts fail, but it could well be that during a "hard" break in these other parts do not break in as well as during an "easy" break in. So, while a "hard" break in results in a "faster" engine at first because of high compression, the trade off is that the engine doesn't last as long. My point was, that unless you are a racer, the minimal extra power you get is not worth the trade-off.

Also, I'll be the first to admit I'm no expert. My experience is with cars and trucks, not motorcycles. I was a mechanic and have built several engines, none of which were intended to be used on a track. Also, this is just my opinion and I could very well be wrong. You have a great point and I'm sure somebody could flame the out of both of us for being ignorant.

I wish there were a real engineer here to put and end to the discussion.
I’ve always had the belief that high compression AND good leak down results equal a healthier engine. Does a “healthier” engine translate into longevity? Who knows. I think we can agree that unless you’re racing competitively, the break in method really doesn’t matter. Most people will not keep their vehicles long enough or notice the slight increase in power one method may have in the other.
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Old 03-13-2009, 08:12 PM   #26
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rode the out of mine....been runnin strong ever since, almost 4 years now
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Old 03-13-2009, 08:58 PM   #27
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you ride it like a grandma, it will perform like a grandma.
Use it as you intend to be using it from the get go.
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Old 03-13-2009, 10:40 PM   #28
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take it easy the first few days then slowly beat the out of it.
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Old 03-14-2009, 12:00 AM   #29
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I ride my hard out of the box. They run better and stronger than friends of mine that do the 1000 mile break in

Same way we break my motors in on my vette. Its been tried and true

To each their own
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Old 03-14-2009, 08:38 AM   #30
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there should be a little book that came with your bike. the front of it should say something like "owners manual" try to find it and look for a section called "break in period" i know this is all pretty vague since you wont have to enter a screen name and password and no one will be there to give you the answer. youre just gonna have to rely on basic reading comprehension. good luck.
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Old 03-14-2009, 09:27 AM   #31
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Why does this same thread keep reappearing? Search, first...

Moto_tune method!

Broke mine in on the dyno the last time.
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