another break in post

[Frozen Black Panther]

these cars are built to be abused, I redlined my 335 right of of the lot , installed a chip at 500 miles 3 years/41,000 later miles car runs like a tank, even tracked it at road america and drove the shit out of it that day. these are what there cars are made for those engines are tested already, i wouldnt say redline it every 5 seconds but dont baby it baby it either, its almost eighty f*** thousand dollars, drive the f**** thing

heck i even red lined the m3 i test drove, the manager said dont go above 4000, the salesman in the car goes "have fun" and i did hence my purchase.

[Malek@MRF]

Originally Posted by Green///Hell

He means follow the warmup process at least stay off the yellow and red zone right from a cold start until its past 8k mark And try not to jump the limiter too often, that might look bad plus it only makes you slower

I drove it like I stole it from day one, no problems and doesn't burn as much oil as others complain about.

I'm glad you said that.

I have actually managed to prove this through numerous engine builds that HARD break ins create a better seal with the piston oil rings and ring landings leading to slightly higher individual cylinder compression and less oil consumption and blow by!



-Malek

[Malek@MRF]

Originally Posted by BigHat

BS

I think some people around here would spend the entire 1200 miles at 3000 rpm or less IF BMW told them to never drive at less than 4000. What possesses one to pay this much for a car just to ignore the guidance by the engineers that designed it?

Of course, this is such a tired BS topic. Doesn't anyone ever to a search and read the thousands of boring discussions on this issue that make the same lame comments over and over?

Do whatever you want, you bought it, but don't cry around here if something happens to your engine. If you're bouncing it off the rev limiter during break-in you're not just getting a bit frisky, you're abusing it intentionally.

I propose we start a "sticky" where owners smarter than BMW can post their VIN number and let everyone know that they opted NOT to follow the break-in procedures. Given perfect knowledge that the owner ignored the break-in procedure would you buy their used car? Not me. This attitude is why I'd NEVER buy a used M car.


To the OP,
The engine isn't a living being. It isn't going to heal from the first 400 miles of abuse if you're good for the last 800. I sincerely hope you're okay. I really don't think these engines are fragile as some think. My point is WHY would you take the chance and ignore the guidance? What were you thinking?
By the way, I'm unsure what M site I read it on, but BMW initially denied warranty service on an over rev'd engine that failed during break-in recently. Eventually they opted to fix it as a good will gesture after a major fight. These engines getting f'd up early in life isn't always a hypothetical discussion.

The link posted above is NOT BS by any means. Guys who have built engines for years can attest to similar break in procedures being more beneficial for the piston component settling process.

[Meff]

Originally Posted by TrackRat

The best engine break-in is done under light loads on an engine dyno with controlled speed, temps, etc. Typically for a street engine this would be 25 hours at various speeds and loads before you ever did a WOT pull. Each car maker has a specified engine dyno break-in procedure but they are all similar. This is how car makers break-in new engines for optimum performance. 600-1000 street miles gives you very similar results and that is why virtually all car makers specify this break-in procedure.

Short of that, follow the recommendations of the folks who are paying for your warranty coverage not some jackazz on the Internet. Your car maker warranties your engine for 50K miles if you follow their recommendations. Internet fools don't warrranty anything. Be sure to read the disclaimer by the so called experts on their website where they tell you to abuse your engine when all the components are tight and new... by revving it high and then using engine braking to suck oil right past the piston rings and into the combustion chamber on deceleration. When you scuff the crap out of the cylinders don't call them because they take absolutely no responsibility for their clueless advice. The talking head website that want's you to abuse your new engine doesn't even know how piston rings function so that should be enough to steer clear of his "expert" advise.

Car makers, piston ring, piston, bearing and valve makers just cringe when they read the stupidity online that passes for knowledge.

+1

Sage advice to be sure....

[henryyxyu]

I'd just listen to the engineers that dumped big $$$ and hours to develop this engine and follow the break-in procedure. They wouldn't tell you to do that without a reason... just my 0.02 cents

[haze gray]

What is the harm in following BMW's break-in procedure vs going out on your own? You'll drive the car many miles more than the break-in mileage. Flog it all you want when it is broken in.

[BlackLight]

Originally Posted by boother

... I have 340 miles on my car and must admit have put on the sport mode and jumped of the line several times. Bounced off the rev limiter once...

As a whole I have been driving very conservatively.

"Very conservatively", would be staying 500 rpm below the recomended max during break-in.
Bouncing off the limiter even "just" once, is in no way, shape or form compatible with the concept of conservative break-in.

[JCtx]

Originally Posted by BlackLight

"Very conservatively", would be staying 500 rpm below the recomended max during break-in. Bouncing off the limiter even "just" once, is in no way, shape or form compatible with the concept of conservative break-in.

Yep, he should have removed at least 'very' . Leave that to me; my car hasn't seen redline yet, and already have 4.4K miles on the clock. Don't know why people have the urge to redline every freaking car on the streets when you have enough power to go crazy fast without redlining it. On a track would be a different matter, but no tracks around here.