Engine break in methods... Check this out.

[deevergote]

http://www.mototuneusa.com/break_in_secrets.htm

I'm putting this in OT and not in tech, because I don't want this to be considered an addition to our tech database...

IMO, the guy is full of crap. He seems to make one statement (that a hard break in seals the rings better than the manufacturer-recommended easy break in) and he uses that statement to validate his argument throughout the entire article. He didn't support that initial claim well enough to convince me that he's right.

I'm especially interested to hear what Scott and Cisco have to say about this!

[Dv8]

Give me his address and a bat. Fuck I hate misinformation.

[The G-Man]

I have read that before.

[deevergote]

It sounds really convincing, if you WANT to believe it... but IMO, he has nothing to validate the one claim that goes against everything the owner's manual says... and he uses that one claim to validate every other claim he makes!

[NAiL05]

Main thing you want to do is let the motor get to operating temp then after that I have heard of different ways of breaking in motors. Starting from gradually running hard to just running it hard from the beginning. Whatever is gonna break is gonna break in those few minutes lol. I would go with the gradual lol. Oh yea and dont forget the common sense things such as enough oil in the motor and dont let the engine overheat lol.

[owequitit]

I don't have definitive answer, as this is one of those not so scientific controversies in most cases. I can make a few observations though.

There seems to be 3 common methods prescribed for break in. Break it in easy, break it in normally, and break it in hard. This guy is recommending the hard break in. I think F1 teams use hard break in as well, so perhaps there is something to it.

I do know that in aviation the recommended procedure is to keep the engines at high rpm for long periods of time. We usually try to do as much cross country flying on them as possible for the first 50 hours. This is significant because cross flights are typically flown at a very high power setting, and the engine doesn't change RPM's much, so while "spinning" fast, the loads are not changing much. At least not compared to most of our other flights.

They also run straight mineral oil for the first 50 hours, and then we switch to regular dino oil. We don't really do synthetic because the engines get the oil changed every 50 hours anyway, and they leak and burn quite a bit of oil. But they are also aircooled 30's technology engines.

I am pretty sure my F22 had an easy break in, just based on the history of the car, and the people who drove it, and how I know they drove it.

It has good compression numbers for the mileage, especially considering the way I drove it.

There is also some creedence to where he talks about running the engine hard, and then letting it coast in gear to help seal the rings, and he is using a more controlled approach to sealing them then just beating on it.

It is possible that the biggest reason OEMs recommend an "easy" break in is to prevent people from redlining every gear from the car lot.

I am going to look into this a lot more in the future, but like I said, those are just some observations I have.

With model airplane engines, they usually recommend 1/2 throttle for 1 tank (about 10-20 minutes), and then full throttle for another specified period of time.

Nails way seems reasonable.

[wed3k]

ive read that before.

now hear me out...race motors...

how do you break it in without putting the power down on a residential street? espeically "500" miles?

granted there are dyno's and stuff but yesterday, we started a Big block chevy up on the engine dyno, broke in the came for about 15 minutes and then today started to make dyno runs. with full throttle runs, the rings sat very quickly BUT longevity wise, i wont know how long they will last in a race motor.

Same went with my boss' harley motor, he built it during the week, fired it up on friday and went to the track on saturday. the thing runs awesome.

[NAiL05]

You have to have engine at optimal operating temperature at all the break ins that is one of the key factors before romping on it but its common sense. I think you are supposed to let it idle up to temp or something like that (correct me if i am wrong on this but it would seem logical). Another thing as I forgot to point out as owequitit did you use normal oil for break in. I have heard DO NOT USE SYNTHETIC for break in applications.

[wed3k]

You have to have engine at optimal operating temperature at all the break ins that is one of the key factors before romping on it but its common sense. I think you are supposed to let it idle up to temp or something like that (correct me if i am wrong on this but it would seem logical). Another thing as I forgot to point out as owequitit did you use normal oil for break in. I have heard DO NOT USE SYNTHETIC for break in applications.

correct, then the rings would never seal.

[JohnD1079]

ummm, you guys are all wrong.

Havent you guys seen The Fast and the Furious?

You Hop in the Car, start it up, rev the shit outta it, and drift comming right outta the garage. At your first light you take it to the limit to see if it was worth everything you put into it.......DUH.....

[Shadow1]

ummm, you guys are all wrong.

Havent you guys seen The Fast and the Furious?

You Hop in the Car, start it up, rev the shit outta it, and drift comming right outta the garage. At your first light you take it to the limit to see if it was worth everything you put into it.......DUH.....

yeah and then we all jumped in our civics and accords, rev a lot and street raced. lmao.


anyways. lol. what is with the break in thing? ive always heard about it but never understood it can someone explain? id rather not click on the link and get my info messed up right out the hole. lol

[deevergote]

Basically, breaking in a motor ensures that all the inside bits are in harmony with each other The rings seal, the cylinder walls remain smooth, etc.

The rings, in a sense, are friction material. Same with a clutch, or brake pads. On that mentality, I wouldn't think a hard break-in would be a good idea (not for reliability, anyway).

Race motors can't really be factored in, because 10+ years of reliability isn't expected from those engines. 1 season, and they're ripped apart and rebuilt.

[Shadow1]

so if were to buy a motor online would i have to have a break in period?

[head4life]

lol?


what a dumbfuck

[Shadow1]

lol?
what a dumbfuck

you shut your whorish mouth you son of a monkey spank.

Deev. can you answer my question please?