ls1290

iTrader: (20)

Anyone agree or disagree with this:

http://www.mototuneusa.com/break_in_secrets.htm

PHANTA-Z

Interesting. My only question is what about cam break-in at the same time? Say you have a completely new motor (valvesprings and all) and have to break it in, wouldnt that break in the article talked about be against what you are "supposed" to do for spring break in? Oh well.

ls1290

iTrader: (20)

Funny, I was thinking the same thing about the cam and springs. In theory, could one not heat cycle the motor a couple of times for the springs and cam and then give the motor a couple of pulls on the dyno?

Lostpatrolman

iTrader: (3)

It seems like the articles wants the cars first cyclings to be on the dyno. You could just use some old springs and replace them after the break in.

fozziejared

iTrader: (1)

what about the break in time on a new clutch? i have just built a new engine and replaced all the gears in my m6 and the replaced clutch and flywheel with ram clutch and steel billet flywheel. is there really need for breaking in a clutch anyway?

Lostpatrolman

iTrader: (3)

Most clutches do have a break in time. They wear, and after some miles will grab differently then when they were first installed. I dont think you need to drive it specially, just dont start dropping the clutch at 5k rpm.

fozziejared

iTrader: (1)

i was worried about that but that is kinda what i figured. i had a 4l60e tranny replaced in my lt1 toyota truck and the shop told me just to drive it how i am gonna drive it. which is obviously going to be hard! i just was wondering if it was different with a manual when you replace the clutch in it.

ls1290

iTrader: (20)

How would boost affect this type of break in procedure? Would not the boost create the extra pressure on the rings to seat/seal faster and better?