Kpa

 

Especially when there is a rocket scientist around

 

I found an amusing quote:
"If you break-in soft, she will like it soft. If you break-in hard, she will scream when you play"

That's the breakin method we believe locally. If you wan't reliability break it in like a granny. If you want both performance and reliability, break it in like the manual say. If you want peak power and performance, drive it hard. A lot of drag racers, break it in on the drag strips in the old days.

 

Slap in on a dyno for the day and break it in that way.

 

This was well said man. Keeping the ring pressure up is crtical, running on jack stands will result in a slower, oil burning car IMO. Do a search for Moto-man break in. Basically, they're run hard from brand new, resulting in max HP, no oil consumption, and longevity.

 

Harry that makes the most sense. Thats the easiest and smartest way to create even engine loads.

The only other option I could think of is a dino juice fill with a moly additive.
Find a mustang dyno and strap it down for an hour, it simulates load, better than any other roller.

I would assume you can probably get in 90 miles in an hour.

 

For those that follow the motorcycle genius approach - can you explain why nearly every manufacturer recommends a break-in procedure? My last M3 had all sort of stickies on the windshield with instructions, disclaimers, and limitations on RPM.

Is it a plot to actually diminish the pereformance and longevity of their vehicles? It makes no sense at all to me.

I am with PHUD on this one. Old Wives Tales and pseudo-science by an unknown, uncredentialed Internet guy is not what I would base my engine run-in upon, nor in fact, did I.

Racers rebuild their engines so much, that inference from their practices are completely insignificant.

Honda has a pretty good experience designing engines that deliver - as i recall, they make more engijnes than anyone else in the world.

And they have it wrong?

 

Few engine builders or racers brake their rebuilt or new engines in like a street car. As long as you put a couple hundred miles of moderate driving on it, that is plenty conservative. Many respected individuals I know claim after driving about 20-30 minutes it is ready for racing. Engine break-in recommendations by manufacturers are MUCH more complicated than setting up the engine to be the most reliable/durable/powerful. There are tons of other parts that settle in, and probably most important, they don't want the driver of his new sportscar redlining the crap out of it and killing himself driving out of the dealership instead of slowly getting used to the car.

 

dude, i just want to say this.
they reco those break in periods (mfg) not just for the engines sake, but to seat everyother metal to metal part on the car, clutch/brakes/diff/synchros etc etc get my drift.
breaking in the motor hard wont hurt a thing, if IF it does, it will be such a small portion of time off the engines life, you wont still own the car to notice it. say you break it in like a granny, cause you want 200k out of it, well, its likely the rings wont be seated 100%, whereas if you rail it and help the rings seat fully while its young, youll prob see alot more power out of it. not probably, i personally would say 110%. ive always broken my motors in the way i plan on driving the car. and never had a single failure. so take it as you will, i guess im on the mototune guys side. lates

 

[QUOTE=S2oooNvegas,Mar 29 2006, 02:29 PM]i guess im on the mototune guys side.