Z4MC running in procedure (SteveD)

[sp3ctre]

You also have to bed the brakes. Do you remember that procedure??

Enfield,

I do remember that being part of the original thread but I dont recall it clear enough to make it worthwhile posting on here. No wonder my brakes are now squeaking!!

I am sure the threads on here relating to bedding in of brakes should suffice.

I dunno... all I did was:

1. gradually warm the brakes with some slowdowns
2. go hell for leather up to 60, then down to 10mph, 6 or 7 times
3. drive round for 15 mins to allow them to cool
4. go hell for leather up to 60, then down to 10mph, 6 or 7 times again
5. drive round for somewhat longer, as they are red hot now and smell like s**t

Seemed to work for me... just make sure from start to finish you don't actually stop 100%

 

[peppernick]

A serial M series owner and the reason all the Z4MCs have got CSLs, Aero skirts and strut braces.

SteveD Z4MC thread

Looks like I have to get myself a pair of aero skirts and that strut brace! Gorgeous

 

[peppernick]

... all I did was:

1. gradually warm the brakes with some slowdowns
2. go hell for leather up to 60, then down to 10mph, 6 or 7 times
3. drive round for 15 mins to allow them to cool
4. go hell for leather up to 60, then down to 10mph, 6 or 7 times again
5. drive round for somewhat longer, as they are red hot now and smell like <img src="http://www.z4-forum.com/forum/images/smiles/censored.gif">

Seemed to work for me... just make sure from start to finish you don't actually stop 100%

Similar to what I did with my Brembos. 2 sessions of multiple hard braking from 70MPH but didn't allow the car to stop completely. Normal drives in between.

I thought they were bedded in. Then I took it to Nurburgring the next day and gave them a hammering, the brake reservoir fluid level dropped by a quarter and the pedal shortened by at least 3-4cms. Amazing what track driving can do bed in components that is usually not too obvious in street driving.

 

[mad4slalom]

saw a post re breaking in race engines , and yes they broke them in hard and soft , then stripped them and the soft bedded ones had not bedded the rings sufficiently hence did not seal and had less compression and therefore less power and longevity. i recall, it did not involve ragging the new motor to death but controlled hard acceleration to evenly wear off the cross hatching on the bores to ensure proper ring seal. doesnt affect most of us on here as most of us were'nt lucky enough to have had our cars from brand new. :driving:

 

[mmm-five]

saw a post re breaking in race engines , and yes they broke them in hard and soft , then stripped them and the soft bedded ones had not bedded the rings sufficiently hence did not seal and had less compression and therefore less power and longevity. i recall, it did not involve ragging the new motor to death but controlled hard acceleration to evenly wear off the cross hatching on the bores to ensure proper ring seal. doesnt affect most of us on here as most of us were'nt lucky enough to have had our cars from brand new. :driving:

Was told when I ran my engine in that I should keep changing up & down the gears, at the same road speed, on a long run so that the engine would get a range of 'speeds' through it without having to rev the nuts off it. Was also told keep it below x-RPM for 250 miles, then below y-RPM for another 250, and then 500 miles at a max of z-RPM. After that and the running in oil change I was told to drive it 'normally'.

Ran mine in over the course of 2 return commutes and a weekend in Wales and about 1200 miles.

 

[JayEmm]

Holy thread revival Batman!

Anyway, when my father and I picked up his 911 from the factory, their running instructions to us were "nothing special, just don't keep it at one rpm for too long - ie. make sure you are always working the engine and gearbox. Keep moving through the gears etc...."

Much easier to do that on the autobahn than it is here...

 

[Dogmatic6]

ive always wondered if the factory do any sort of running in of the engine hooked up to a computer before the car does any official miles?

 

[Anonymous]

Holy thread revival Batman!

Damn it, I wanted to post the same