I found this article as i was researching ring information. What are your opinions?
http://www.mototuneusa.com/break_in_secrets.htm
Thanks, Alex
http://www.mototuneusa.com/break_in_secrets.htm
Thanks, Alex
Opinions on break in period
- Thread starter TheNewRed
- Start date
I've did the research as well, and it seems that most people agree with him on seating the rings. I'm going to break in my new 1.5jz this way, but I'm still going to baby it for a little while before I start beating on it. I'm going to rev it to 4500rpm a few times and let it come down on it's own, but I'm not going to go out and beat on it right after that. I'm going to try and put about five hundred miles on it before I do that. Just my two cents worth.
suprahero;1031409 said:
Sounds good, let me know how it goes. When do you think you will be up and running?
When i start my rebuild(2-3 Weeks) i would like to know if its a line that shouldnt be crossed. Its makess me nervous, b/c its such a touchy subject.
I just drive mine normally and load it up from time to time, Problem with a hard breakin is most 7M builds aren't in any state near ready to lean on them hard as most times people have changed a lot of parts and the tune just isn't there.
What if you just replaced the rings, and the car was in a more or less perfect state of tune prior to the tear down?
I was planning on using the Motoman method as well. Ian, feel free to PM me as you know the specifics in my case.
I was planning on using the Motoman method as well. Ian, feel free to PM me as you know the specifics in my case.
IJ.;1031433 said:
Sounds good also, i have the emanage blue installed but this was my plan... Total seal rings Classic race(not gapless), cryo treat the stock pistons, and typical MHG obligations, and hone. By the time the car is running again ill have a wide band, and the Profec B will finally be working again. I was going to(depending the opinions i get on here), fire it up let it get to OT, and go out for like he said, about 20miles or so and beat on it up to 5000rpm on all stock settings, change oil(cut up oil the filter), do it again for another 20 miles, and then drive normally for 1500 miles(no beating), then tune. Sound good?
If you can be sure the AF's will be close enough no reason why not but too lean or too rich isn't going to do the rings any favours.
IJ.;1031437 said:
Just the one, yeah. I was planning on letting it warm up, then heading out. Full throttle second gear 2000-5000 RPMs, then third 2-5000, then fourth 2-5000. Come back, change the oil, repeat. I was wondering if I should turn the boost down a good bit or leave it where it is currently at, concern being I'd run extremely rich if I turned the boost down.
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on two of the engines i've built now, you go easy for a little bit, under 25miles or less... and then change the oil, then i tell them to drive how they want, just dont get boost happy and try to push the max psi you think the turbo is good for... and never a problem from either motor. the "problems" i ever run into is the previous owners.... i hate used cars.
My car is setup and tuned for 15PSI on a 60-1 CT, I'm not sure if that's too much for a Motoman break in or not... Thoughts?
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I was in a hurry with one of my motors, I just did a garage/ghetto (stone hone) rebuild (in the vehicle, this was the Z) job and did the motoman route and 3 cylinders were 96% and above, the other 3 were below 70% I have never had a good motor where any of them were above 92~93% leak down. The 3 that were bad were such a disappointment I decided to park it for a while and wait till I could do it right. With the next motor I didnt follow any regimen as specific as the motoman theory but I surely was not nice to the motor. 18psi here and there (never a full 3rd gear pull but I always decelerated in gear, that seems like sound info) for the first 30-35 miles, then swapped the oil, then just drove it. All sorts of old schoolers and motorcycle rebuilders say "Just drive it like your going to drive it." and that seems to work.
I thought 96% leakdown numbers is a pretty damn good number. Any of you that know for sure please speak up, I heard all sorts of numbers from purported experts but when I picked their brain they seemed to have no more experience than I. Im no expert, I have just done it a few more times than I care to.
Please chime in with your opinion and experience if you have built enough motors to have a system that works for you.
I have a friend that has spent more than 100K in race motors and swears by warm-up session break-ins at the track.
I thought 96% leakdown numbers is a pretty damn good number. Any of you that know for sure please speak up, I heard all sorts of numbers from purported experts but when I picked their brain they seemed to have no more experience than I. Im no expert, I have just done it a few more times than I care to.
Please chime in with your opinion and experience if you have built enough motors to have a system that works for you.
I have a friend that has spent more than 100K in race motors and swears by warm-up session break-ins at the track.
