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breaking in new motor, is this true?

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Old May 25, 2003 | 04:01 PM
  #1  
shortyz's Avatar
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Default breaking in new motor, is this true?

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

i know its for bikes but same engine dynamix apply to us.

any thoughts guys.
Old May 25, 2003 | 04:25 PM
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J-SMITH69's Avatar
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Default Re:breaking in new motor, is this true?

the only ting i've ever been taught was to rpm at about 2k for about 20 mins.
Old May 26, 2003 | 03:29 AM
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XDEep's Avatar
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Default Re:breaking in new motor, is this true?

i like the one from crvtec.com

Use 0-30, or 5-30, or 10-30 motor oil and a Honda filter. Do NOT use synthetic motor oil for break in. Make sure the fluid levels are where they should be.

Start it up and keep the engine at 2500 -3000 rpm for about 20 minutes. Make sure there are no leaks, or mechanical problems. The only idling will be for setting the timing.

Before doing the schedule, remember that running the engine at steady rpm (like cruising on the freeway) is not good for break-in.

0-200 miles. Try to keep the highest rpm under 3000 rpm. Every 15-20 miles, zing the engine to 4500 rpm in first and occasionally in second gear.

200-400 miles. Try to keep the revs limited to 3500 rpm. Raise the "zing" rpm to 5500 with the same frequency as above.

400-600 miles. Go to 4000 rpm for driving limit. Raise the "zing" to 6000 - 6500 rpm and include 3rd gear pulls, same frequency.

600-800 miles. 4500 rpm driving limit. "Zing" it to 7000+ rpm and include partial 4th gear pulls.

800-1K miles. 5000 rpm limit with "zing" to 7500+ with some pulls all the way through 4th and partial fifth gear pulls.

Now, don't misunderstand me on the zings. You don't HAVE to scream the engine religeously at the prescribed intervals. If you don't have the space to run the engine up in the selected gears, don't do it. Just know that you can, and IF the opportunity comes around lay into it. Don't over-do the procedure.

I recommend that the oil be changed at the 1K mile marker. If the plugs are looking good and if the compression's (and leak down numbers) good, switch to Mobil 1 for life. Use either 0-30, or 10-30. After the oil change, you might want to reset the valves and from that point on, drive it the way you'd normally run it.
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