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Author Topic: Engine break-in  (Read 4185 times)

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Farm boy

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Engine break-in
« on: February 05, 2019, 08:53:30 PM »
What are the pros and cons of breaking in an engine on the dyno ?
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Yellow09SERG

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Re: Engine break-in
« Reply #1 on: February 05, 2019, 09:58:09 PM »
If you a using a qualified tuner, on the dyno would be my choice. They will insure the AF ratio will be right from the start and will monitor the temperatures on the bike as the rings seat. I was interesting to see it take longer and longer for the temperatures to come up as the rings seated and the tune took shape
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ltank

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Re: Engine break-in
« Reply #2 on: February 06, 2019, 12:35:40 AM »
S&S motors take 1k mile break in along with not exceeding certain rpm at certain mileage,  varying speeds,  not getting motor too hot. I wouldn't want a motor that someone did break in on a Dyno! I always was very strict and changed oil at 50, 500, 1000, 2000 until the 1500 or 2000 mile mark. Motors are too expensive to mess up.
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MCE

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Re: Engine break-in
« Reply #3 on: February 06, 2019, 02:49:41 AM »
Breaking in on a dyno is a good thing. Monitoring the temps and AFR is the right way to
go about it. (I'm going to break mine in like that as soon as my pipe gets here)
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CHH_Badkarma

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Re: Engine break-in
« Reply #4 on: February 06, 2019, 05:08:27 AM »
Quote from: MCE Performance on February 06, 2019, 02:49:41 AM
Breaking in on a dyno is a good thing. Monitoring the temps and AFR is the right way to
go about it. (I'm going to break mine in like that as soon as my pipe gets here)

Some people just equate a dyno with beating on and flogging a motor   :end:
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skratch

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Re: Engine break-in
« Reply #5 on: February 06, 2019, 09:42:55 AM »
yeah, that...

just because it's on a dyno, doesn't mean that it has to be ran at wot.  all the 'rules' still apply, varying engine speeds, loads, etc.  you're just able to closely monitor the state of the engine while you're doing it.
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hd-dude

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Re: Engine break-in
« Reply #6 on: February 06, 2019, 10:26:00 AM »
Like others have stated, break in on the dyno is the best way as you can monitor all of the conditions that can cause damage during break in. Heat, detonation,  and air fuel ratios are critical. I do all of my break-ins on the dyno adjusting the AFR and timing along the way. The first 50 or so miles are critical and the motor never sees RPM's over about 3,000 during that time.
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Farm boy

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Re: Engine break-in
« Reply #7 on: February 06, 2019, 09:08:32 PM »
I see, so breaking in on a dyno, is just like breaking in a diesel on a dyno. Vary the load and monitor closely.  Make adjustments as necessary.
Now to find a dyno/tuner in Indiana,  that will use TTS.
Any suggestions ?
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prodrag1320

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Re: Engine break-in
« Reply #8 on: February 07, 2019, 06:09:38 AM »
Quote from: Farm boy on February 06, 2019, 09:08:32 PM
I see, so breaking in on a dyno, is just like breaking in a diesel on a dyno. Vary the load and monitor closely.  Make adjustments as necessary.
Now to find a dyno/tuner in Indiana,  that will use TTS.
Any suggestions ?

valley racing in northern Indiana or jim kenedy in central illinios
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laylonlor

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Re: Engine break-in
« Reply #9 on: February 07, 2019, 09:57:05 AM »
i had two broken on dyno , seems ok to me, get a good  patient tuner :huepfenlol2:
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bakon

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Re: Engine break-in
« Reply #10 on: February 08, 2019, 11:01:51 AM »
I have done it both ways with plenty of good results.
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Will

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Re: Engine break-in
« Reply #11 on: February 08, 2019, 11:30:46 AM »
Quote from: laylonlor on February 07, 2019, 09:57:05 AM
i had two broken on dyno , seems ok to me, get a good  patient tuner :huepfenlol2:
Did you mean "in" and not "on"? :nervous:

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Unbalanced

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Engine break-in
« Reply #12 on: February 08, 2019, 03:15:53 PM »
Quote from: Farm boy on February 06, 2019, 09:08:32 PM
I see, so breaking in on a dyno, is just like breaking in a diesel on a dyno. Vary the load and monitor closely.  Make adjustments as necessary.
Now to find a dyno/tuner in Indiana,  that will use TTS.
Any suggestions ?

Check out these guys

Frank @ Drago’s Bikeworks near Rockford Illinois
Jason @ C & S Speed shop east St. Louis
Horsepower Inc in Indiana
« Last Edit: February 08, 2019, 03:18:24 PM by Unbalanced »
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MCE

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Re: Engine break-in
« Reply #13 on: February 15, 2019, 03:32:48 PM »
Many many opinions on this. I don't follow that 'not over 3000' crap either. As long as the tune
is pretty close, you can safely (but briefly) approach WOT to red line. This is important for several
reasons.

Mainly, you're putting maximum pressure against the rings on the freshly honed cylinders. That ensures
a good ring seat and seal. Keeping an eye on AFR, or EGTs,  head and oil temps in the process.

Don't beat on it, but don't treat it like grandma in her ford Maverick either.  To each their own. I break
in V8s on the dyno the same way. Change the oil and cut the filter open right afterwards. Good to go.
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bigchuck

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Re: Engine break-in
« Reply #14 on: February 15, 2019, 07:12:07 PM »
Some say to take out synthetic oil and use dinosaur oil for break in. What do you guys think?
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