best break in method

[Constant_Project21]

I have a question similar to this, and sorry if this is considered thread jacking.

I understand the process of breaking in a motor, but what about when you're breaking in a motor, AND a clutch? Say I toss a new shortblock, and a new clutch in my car, would the steps be different? I've heard ways to break in each individually, but dont think I've read anything regarding breaking in both at the same time.

[Goat Blower]

Both would be the same. Just drive it normal for 100 miles or so to bed the disk in and let her buck.

[scheides]

I always just had a basic tune set up already, fire it up, check for leaks for about five minutes, then go out and drive it pretty easy getting up to about 60 mph and then let off the gas and do the vacuum pulls for a good part of the first 20 miles. Then I change the oil, drive it nicely with some normal boost pulls rough tuning it, change the oil at 100 miles, then bring it to Shane for a full tune, then let it sit for another year


FTFY! tee hee :)

[mlomker]

I've been reading up on this (controversial) topic lately, for my own motor. Not a lot of agreement out there so obviously we're doing it how Shane wants it.

I do like Buschur at times, though: "Running an engine for 2,000 miles to break it in is complete bullshit. It's most companies ways of getting you to take 6 months to be ready to run the car hard and by then they hope the warranty is over."

[Constant_Project21]

Both would be the same. Just drive it normal for 100 miles or so to bed the disk in and let her buck.

Okay sweet, thanks. I wasn't sure at all on that one. I will be breaking in a new clutch and motor, sometime in the near future, didn't want to do it wrong.

[niterydr]

If the vehicle is running well (tuned):

Idle to operating temperature. Check for leaks, make sure achieves operating temp. Change oil.

10-20 vacuum pulls to get rings seated. Then do part throttle tuning, change oil.

Let her buck.

Thats what I did for the full power/street cars that wanted a tune and break-in. Never an issue, hell John's galant was making over 600awhp with a few miles on the engine.

I've also done the drive for 5k until the engine breaks in method, BORING. OEM's run them and put them in the car, if the tune is G2G, start enjoying the car.

[Kracka]

In the factory Honda would fire up all brand new F20C (S2k engine) engines, rev them to 9k RPM to ensure all was well, shut them off, then away they went. Some S2k's went directly from the assembly line to the track to ensure they were performing to spec.

[Shane@DBPerformance]

AMS instructions
http://www.amsperformance.com/instructions/EngineBreakInInstructions.pdf

The Cosworth motors that I have done some break-in on the dyno come with some rediculous steps to go through. Like 10 minutes straight at X RPM making X ft/lbs of torque, then 20 minutes at X RPM and X ft/lbs, then 10 mins at X RPMs making X ft/lbs, and more.

Getting the A/Fs dialed in right away, doing a bunch of vaccum pulls and changing the oil a bunch of times seem to the most important things.