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This may well be a stupid question but... My MCS is completly stock, as far as I know, as I bought it from new. Looking at some of the other threads, the rev limiter seems to be set at 6750, whilst mine rips round past 7100 on the clock? Is this normal?

[insane*mini]

Just curious, how do you know exactly what the rev counter is? I mean, I know my MCS redlines just before 7k, but how do you have 6,750? Is there a digital guage somewhere? Does the manual say it?

-Cody

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I found that figure in another thread which I assumed to be the std programmed limit, I'm quite likey to be wrong though! As you say, I only know mine goes passed 7100, not sure of the exact reading as only have the gauge to go on. Prob a fair error reading in that too!

Does anyone know the std set limit?

[Root Ginger]

Your getting a little confused. The red line is at 6750rpm. This is where the red lines start on the gauge. The rev limiter kicks in around 7100rpm.

[ingsoc]

7100? puny! lol. j.k. I'm running 8150. . Anyways, yes, the needle can go past 6800 stock but fuel will cut off somewhere above that. And, how are you reaching 7100? by accelerating? when downshifting? An improper downshift can send you way past 6800 and there's nothing the engine can do but cut off fuel, as once you engage the clutch the engine will have to catch up to mechanically keep up.

[holder]

Quote: Originally Posted by Root Ginger

Your getting a little confused. The red line is at 6750rpm. This is where the red lines start on the gauge. The rev limiter kicks in around 7100rpm.

Thanks, it was the rev limiter I was asking about, if the rev limiter kicks in at about 7100, all is well.
Cheers

[shazam]

My mcs was definately at 6750- until it was tuned, then it was set at 7100, when it was remapped, I found the change quite obvious.

But if you bought it new- I wouldnt worry.

[Rickys'S]

Quote: Originally Posted by ingsoc

7100? puny! lol. j.k. I'm running 8150. . Anyways, yes, the needle can go past 6800 stock but fuel will cut off somewhere above that. And, how are you reaching 7100? by accelerating? when downshifting? An improper downshift can send you way past 6800 and there's nothing the engine can do but cut off fuel, as once you engage the clutch the engine will have to catch up to mechanically keep up.

Why are you running 8150rpm for?

I am at 7600 for absolutly no reason what so ever really as power drops away at 7300 on the dyno, wether that is due to valve float we don't know but 8150 seems stupid to me expecially on the stock head and stock springs etc!

I will be going back to 7300 when i can be bothered to send the file off, also i change gear at 6800rpm anyway as that just seems best for my set up!

To everyone else imho 7200-7400 is enough unless you modify valve train for safety, even then has anyone got the dyno sheets or can prove that 8000+ makes power from our s/c engines!

[Cooperschris]

sorry to ask an unrelated question - found this thread through typing 'rev limiter' into the search bar...

So is it a bad thing to hit the rev limiter in a standard MCS (obviously regularly would!?) -

I'd say I've probably had it cut in about 5 times in the total time Ive had the car (about 1year)

can it do any damage to the supercharger/belt etc? - I have hit it a couple of times by accident by holding on to second to long - I did it today and looked down to see the needle drop down from nearly against the stop - seems its easier to do when I run super unleaded! - my supercharger also has a bit of a werring rattle - although I assume this is normal (I've heard pretty much the same noise on other MCS') on idle...

[Cooper_si]

Quote: Originally Posted by Cooperschris

my supercharger also has a bit of a werring rattle - although I assume this is normal (I've heard pretty much the same noise on other MCS') on idle...

The rattle more than likely is the belt tensioner wheel, quite common to be honest and can be changed under warranty (depending on the age.mileage of your MINI of course)

8150 rpm...from a cooper s....why ?

[Rickys'S]

Quote:

8150 rpm...from a cooper s....why ?

I don't know, there is only one guy to educate us........ingsoc!

[ingsoc]

Quote: Originally Posted by Rickys'S

I don't know, there is only one guy to educate us........ingsoc!

My after dynos are not done, because my school (med school sucks ) got in the way. I have no 'proof' other than I could shoot videos to show you the tach pegging . The software is written locally and is being developed on my car; since time ran out on my winter break and I have been 7 hours away from that location all semester, the AF ratios were not finished, and the car runs mad rich (sub 11:1) from 3000-7000 or so rpm. I have installed a PLX R-300 to get the best possible tune (I did not have this before, and the software was very roughly cut to say the least!) I take my national board exam in late June and will have my project done in early July. yee-hah!

When my tune is good, I'll get those dynos. You better believe that I'm sorry that I didn't get them done earlier (the car would be mucho more fun)! BUT, I can tell you that I don't lose much if any power at redline, even now [running rich]. When those dynos which Jan rightly requests are done, we'll know exactly what the advantage is, if any. After all, that's the only way that novel ideas become reality, now isn't it?

For the record, I'm running an M7 Cosworth head, which was ported to allow more power up top, so what works on my car wouldn't perhaps work on a stock MCS. Hope that helps!

[robbo mcs]

Quote: Originally Posted by Cooperschris

So is it a bad thing to hit the rev limiter in a standard MCS (obviously regularly would!?) -

I'd say I've probably had it cut in about 5 times in the total time Ive had the car (about 1year)

can it do any damage to the supercharger/belt etc? - I have hit it a couple of times by accident by holding on to second to long - I did it today and looked down to see the needle drop down from nearly against the stop - seems its easier to do when I run super unleaded! - my supercharger also has a bit of a werring rattle - although I assume this is normal (I've heard pretty much the same noise on other MCS') on idle...

Hi,

You won't do any damage by running into the rev limiter for short periods of time when accelerating in gear. The rev limiter software is designed to cut fuel and ignition. You will feel the car bog down. It feels like traction control has cut in Obviously you don't want to do it, as it slows you down, but if it happens occasionally its no big deal

However, if you over rev on a gearshift due to pulling a lower gear than intended, or by engaging the downshift gear when the road speed is too high, you can do major damage. In these circumstances you are allready off the throttle, and the revs are due to the mechanical speed of the wheel and the gear selected, so the rev limiter can't help by cutting ignition or fuel

Cheers

Robbo