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 Whats your opinion on this break in procedure...

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Don Abbondio
Don Abbondio

Posts : 135
Join date : 2014-11-12
Age : 58

PostSubject: Whats your opinion on this break in procedure...   Mon Jan 26, 2015 7:50 am

I found this interesting... perhaps you will to. Whats your opinion?

Full article here;

[You must be registered and logged in to see this link.]

A few points from the above site...

1. On the Street:
Warm the engine up completely:
Because of the wind resistance, you don't need to use higher gears like you would on a dyno machine. The main thing is to load the engine by opening the throttle hard in 2nd, 3rd and 4th gear.

Realistically, you won't be able to do full throttle runs even in 2nd gear on most bikes without exceeding 65 mph / 104 kph. The best method is to alternate between short bursts of hard acceleration and deceleration. You don't have to go over 65 mph / 104 kph to properly load the rings. Also, make sure that you're not being followed by another bike or car when you decelerate, most drivers won't expect that you'll suddenly slow down, and we don't want
anyone to get hit from behind !!

The biggest problem with breaking your engine in on the street (besides police) is if you ride the bike on the freeway (too little throttle = not enough pressure on the rings) or if you get stuck in slow city traffic. For the first 200 miles or so, get out into the country where you can vary the speed more
and run it through the gears !

Be Safe On The Street !
Watch your speed ! When you're not used to the handling of a new vehicle, you should accelerate only on the straightaways, then slow down extra early for the turns. Remember that both hard acceleration and hard engine braking (deceleration) are equally important during the break in process.

2. Change Your Oil Right Away !!
The best thing you can do for your engine is to change your oil and filter after the first 20 miles. Most of the wearing in process happens immediately, creating a lot of metal in the oil. Plus, the amount of leftover machining chips and other crud left behind in the manufacturing process is simply amazing !! You want to flush that stuff out before it gets recycled and embedded in the transmission gears, and oil pump etc...

(Three words on break- in: NO SYNTHETIC OIL !!)

Q: If break- in happens so quickly, why do you recommend using petroleum break- in oil for 1500 miles ??

A: Because while about 80% of the ring sealing takes place in the first hour of running the engine,
the last 20% of the process takes a longer time. Street riding isn't a controlled environment, so most of the mileage may
not be in "ring loading mode". Synthetic oil is so slippery that it actually "arrests" the break in process before the rings can seal completely. I've had a few customers who switched to synthetic oil too soon, and the rings never sealed properly no matter how hard they rode. Taking a new engine apart to re - ring it is the last thing anyone wants to do, so I recommend a lot
of mileage before switching to synthetic. It's really a "better safe than sorry" situation.

Q: My bike comes with synthetic oil from the factory, what should I do ??

A: I recommend changing the factory installed synthetic oil back to petroleum for the break-in period.

Q: What about the main and rod bearings, don't they break - in ??

A: Actually, the operation of plain bearings doesn't involve metal to metal contact !! The shiny spots on used
bearings are caused from their contact with the crankshaft journals during start up after the engine has been sitting a while,
and the excess oil has drained off. This is the main reason for not revving up the engine when it's first started.

The subject of plain bearings is one of the most mysterious aspects of engines, and will be covered in a future issue
of Power News. In it, I'll reveal more information that fully explains the non-contact phenomenon.

Q: Why change the oil at 20 miles ?? Doesn't the oil pick up
screen catch the aluminum bits ???

A: It's true that the screen stops the big pieces, but many areas of the engine aren't within the oil filtration system. The oil that is splashed around will circulate metal debris to the lubricated bearing surfaces. For example, transmission gears and their ball bearings are unprotected by the filtration system, and even the cam chain makes a perfect "conveyer belt" to
bring metal debris up into the cylinder head !!

A close examination of a new engine will reveal lots of aluminum deposits on steel parts. This aluminum coats and tightens
up the clearances of the parts, which creates a loss of power. Most of the time I spend "blueprinting"
an engine is actually inspecting every part and "de-aluminizing" them !!

I prefer to remove the oil pan and clean the aluminum bits out of a new engine out that way, but a $20 oil change
is an easy and inexpensive way to flush the initial particles that come loose in the first miles.
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Posts : 1163
Join date : 2013-11-26
Age : 53

PostSubject: Re: Whats your opinion on this break in procedure...   Mon Jan 26, 2015 9:03 am

That sounds similar to the other notion I read.

Ride the bike for 20 minutes (from the dealer to home maybe) doing the first "step" of revving and change the oil and filter.
Go for another 20 minute ride taking the bike thru the revs in the second step. Change oil and filter.
Go for a third (and last) 20 minute ride doing the last step of break-in revs. Change oil and filter.
DON"T use synth to do this.

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