When can I put my foot down?

[TONY3R]

After you have the 1000 mile service can you then open up the engine totally?

[LaurenceFrost]

According to the Noble book, yes you can.

I think it's far better to slowly increase the revs though. So after your 1000 mile service for example, add 500 rpm for every 250 miles you cover.

Have you had the "angel on one shoulder and the devil on the other" scenario yet

[TONY3R]

Yes all the time. I was thinking that the demo model I first drove had only 700 miles on the clock and I thrashed that a little here and there ...

.....its just a bit different when its your own!

[pbrett]

LaurenceFrost said:

I think it's far better to slowly increase the revs though. So after your 1000 mile service for example, add 500 rpm for every 250 miles you cover.

Not being antagonistic but why? What do you think you're achieving by this?

Cheers

Phil

[TONY3R]

Yes all the time. I was thinking that the demo model I first drove had only 700 miles on the clock and I thrashed that a little here and there ...

.....its just a bit different when its your own!

[Mole]

pbrett said:

LaurenceFrost said: I think it's far better to slowly increase the revs though. So after your 1000 mile service for example, add 500 rpm for every 250 miles you cover. Not being antagonistic but why? What do you think you're achieving by this? Cheers Phil

[DanH]

If you take it too easy, you'll glaze the bores which doesn't do you any favours.

I'd just get stuck in if the manufacturer says its ok. Making sure the oil is up to temp first of course (which takes surprisingly long in most cars).

[Mole]

pbrett said:

LaurenceFrost said: I think it's far better to slowly increase the revs though. So after your 1000 mile service for example, add 500 rpm for every 250 miles you cover. Not being antagonistic but why? What do you think you're achieving by this? Cheers Phil

In our oppinion, increasing the revs gradually rather than thrashing it after your 1000 mile service, should bed the engine in better. Remembering of course to vary the engine revs, i.e. not just sit on the motorway at a fixed speed. Also remembering to let at the end of a run, the turbos cool and "spin down" before turning off !

Mole

[3rtt]

WHEN CAN I PUT MY FOOT DOWN?

When your wife tells you that you cannot take the car out AGAIN..........

Cheers,
Ian.

[Mole]

DanH said:

If you take it too easy, you'll glaze the bores which doesn't do you any favours. I'd just get stuck in if the manufacturer says its ok. Making sure the oil is up to temp first of course (which takes surprisingly long in most cars).

Agreed re "glazing of the bores" AND "making sure the oil is up to temp".

Maybe, its a bit of all the advice you will receive, and being sensible !

Mole

[pbrett]

Mole said:

In our oppinion, increasing the revs gradually rather than thrashing it after your 1000 mile service, should bed the engine in better. Remembering of course to vary the engine revs, i.e. not just sit on the motorway at a fixed speed. Also remembering to let at the end of a run, the turbos cool and "spin down" before turning off ! Mole

Fair enough on the turbo side but to be honest, revs have little / nothing to do with running in. Load is what counts.

Then again, I'm willing to learn if anyone's got a good argument either way.

Cheers

Phil

[joust]

Key IMHO is to *vary* the revs, whilst still increasing the range.

Interestingly Lamborghini say that the Gallardo is "run in" from the moment it leaves the factory, and if you have ever seen a major manufacturer doing a test on a newly built engine - they *rag* the nuts off them.

See
www.lotuscars.co.uk/lotuslife/ubblotuslife/Forum11/HTML/000238.html
for Nick Adam's (Lotus development engineer) view on it.

J

[DanH]

joust said:

Key IMHO is to *vary* the revs, whilst still increasing the range. Interestingly Lamborghini say that the Gallardo is "run in" from the moment it leaves the factory, and if you have ever seen a major manufacturer doing a test on a newly built engine - they *rag* the nuts off them. See www.lotuscars.co.uk/lotuslife/ubblotuslife/Forum11/HTML/000238.html for Nick Adam's (Lotus development engineer) view on it. J

Lambo actually run the engines in on the bench though. Thats the exception rather than the rule.

[joust]

DanH said:

Lambo actually run the engines in on the bench though. Thats the exception rather than the rule.

Interesting. Thanks Dan - I wondered how they did it.

J

[LaurenceFrost]

DanH said:

Lambo actually run the engines in on the bench though. Thats the exception rather than the rule.

It’s a shame that there are not many manufacturers that have the facilities for this. It must be a few hours to bench-run-in each engine, which for Lambo is fine, but for a manufacturer that churns out >1000 engines a week it’s simply not possible.

One positive thing I would say about the running in process is that it is an ideal opportunity to gradually learn the habits of a car. I wonder how many less Nobles would be in existence today if they were good for 7000 rpm straight from the showroom?

[gotapex]

This conversation kind of reminds me of this one method I read. Very controversial.

If you have a few minutes, take a read.

www.mototuneusa.com/break_in_secrets.htm

What do you guys think? It makes sense, but I keep wondering if I'm missing something critical that makes it a very bad idea.

[amg merc]

gotapex said:

This conversation kind of reminds me of this one method I read. Very controversial. If you have a few minutes, take a read. www.mototuneusa.com/break_in_secrets.htm What do you guys think? It makes sense, but I keep wondering if I'm missing something critical that makes it a very bad idea.

Interesting information and he sounds well informed! Unfortunately, having taken delivery of a "new" M12 at 70-ish miles it would have been too late for me anyway! :-) I suppose only a dyno test would help now?!

[LaurenceFrost]

gotapex said:

This conversation kind of reminds me of this one method I read. Very controversial. If you have a few minutes, take a read. www.mototuneusa.com/break_in_secrets.htm What do you guys think? It makes sense, but I keep wondering if I'm missing something critical that makes it a very bad idea.

That makes very interesting reading.