Breaking in a Fresh Build??

[N2O]

now i have heard rumors about how to properly break in a new engine. but I want actual facts here.. I dont want to Blow up this Brand new build.

this is what i got from another website.

Originally Posted by MichaelDelaney from team-integra.net

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.


METHOD 1: Endyn Way

0-200 miles ( 0-325 km ) : 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.

201-400 miles ( 326-650 km ): Try to keep the revs limited to 3500 rpm. Raise the "zing" rpm to 5500 with the same frequency as above.


401-600 miles ( 651-970 km ) : Go to 4000 rpm for driving limit. Raise the "zing" to 6000 - 6500 rpm and include 3rd gear pulls, same frequency.

600-800 miles ( 971-1290 km ): 4500 rpm driving limit. "Zing" it to 7000+ rpm and include partial 4th gear pulls.

800-1K miles ( 1291-1615 km ) : 5000 rpm limit with "zing" to 7500+ rpm 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.


METHOD 2: 2000 NIRA Comp4 Class Champion, Stephen Sakai's Way



1: Let the motor idle for about 30 minutes then change the oil.


Then take it out and road test for short distances until you reach about 100 miles. Then change the oil again.

Once you reach about 100 miles it should be broken in by then. Change the oil at 250, 500 and 1000 and then normal from then on. If you are scared you can wait until 500 miles before you start beating on it.

2: With respect to breaking in new cams : As long as you lubricated the cams properly on installation, there is no real break-in procedure.


METHOD 3: Ken Wood's (from Temple of VTEC's FAQ Section) Way

1. Use regular oil, not synthetic, during break-in.

2. When you first start it up, let it COMPLETELY warm up, not just kinda warm, all the way warm.

3. While it's still hot, check and see if the head needs to be
retorqued.

4. Check the timing again, as well as the valve adjustment.

5. Very slowly and using the lowest rpms as possbile get to about
65mph. Put the car in 4th gear. The coast, in neutral, to about 30.

6. Go from 30 to 65, in 4th gear about 20 times. This allows the rings
to seat, so do it right, and do it 20 times.

7. Drive EASY for about 150 miles. Change the oil. Still just the
regular oil.

8. Drive easy for another 150 miles. Change the oil again. Still just
the regular oil.

(I realize that steps 7 and 8 say the same thing. Do it twice)

9. Drive it kinda easy (no trips to redline) for another 1500 miles.

10. Change the oil again. Now you can use the expensive synthetics if
you want to.

11. After that, the motor is pretty much broken in, so "go run the dang
thing to see how fast it is!!!!".



Of the 3 methods, Stephen's method of only going for 500 miles on break-in is pretty aggressive and I personally would opt for the other more conservative methods of going longer but that's me. I would personally change the non-synthetic oil more frequently than the way the Endyn method states.





for more info
http://mototuneusa.com/break_in_secrets.htm

[Bilaltq]

It seems the last one's most effective, but is it recommended to do a break in at one go? The constant oil change procedure looks good too... constant lubrication with new oil everytime.


If I could suggest with a lamens' view, I'd say the last one. I'd recommend a second opinion on that though!

[Kassy]

sorry for going off topic, but what kind off engine build have you got done on your car N20 and where?





thanks

[N2O]

havent done yet but about to do,at the moment gatherings parts,im myself searching for a specialist boring guy

[panicslayer]

What is this

[Kassy]

N20 what setup are you going for and what internals? your looking to turbocharge a honda im assuming?

[N2O]

^^^ how to break in a motor after a rebuild(eg all-motor rebuild)