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M3rader
02-24-2003, 10:23 PM
I'm embarassed to ask but what is the correct way to blip the throttle during shifts?

Is the clutch fully engaged or not (slipped) when the "blip" takes place?

Same question for rev matching in general...should clutch be fully engaged? Should the revs be matched by pushing down the accelerator to get the RPM's up to the correct level and then relaese the clutch?

I just had the 1,200 mile service done today, so I'm ready to start letting her out! Just wanted to make sure what I am doing is correct with regard to rev matching.

TIA...






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StMedina
02-24-2003, 10:41 PM
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CorpusChristi,TX

CK
02-24-2003, 10:42 PM
we didnt all come out of the womb knowing stuff like this, except for maybe Steve Medina ;-P

I'm not sure if there is exactly one correct method for blipping the throttle. It basically will come down to you and your driving style. I believe one main characteristic of a good blip is just taping the throttle just enough to where you think the RPM's should be for a rev match. As you get more acquainted with the car this will come to you instintually, so just give it time.

Typically, the clutch is never fully engaged, atleast for me. Especially in toe-heel, i barely let the clutch out, perhaps just enough for it to dis-engage, which is about 2 inchs or so(varies on cars) on my car. You will find that this makes it much easier when you want to re-engage the clutch. I also have a clutch stop which helps out but i temporarily removed it since i am waiting for my SSK.

Same goes for rev-matching, just blip the throttle up and as long as the motor is still spinning up when you let the clutch out it will engage very smoothly. I would suggest you try the 4th to 2nd shift at 40mph. When it goes into 2nd it will be right around 5k or so RPM's. If you can master this then you should be pretty good to go. Might want to also practice toe-heel at various intersections if you think it is safe enough. Lastly, if you're alone at a light just practice blipping till you feel comfortable with it. If you are already used to the car then i would strongly advise just driving it around normally with sport mode ON. I do this and makes shifts so much easier to match.

If you just had the 1200 mile service you might want to hold off on WOT action. The car has a secondary break-in procedure that lasts till 3100? miles. The sticker should be in the top corner of your windshield on the driver side. Just wait a little bit longer just to be sure the seals have fully developed.

-CK

CK
02-24-2003, 10:45 PM
Hey do you one for cooking curry and not having it stink up the house. I swear, everytime i bust out the chutni i have to wait like a week for that sh!t to air out of my house. ;-)

-CK

M3rader
02-24-2003, 10:59 PM
The secondary break-in lasts until ~3,100 I believe. There is no mention of avoiding full throttle during this period. Says something about max constant speed of ~130mph or someting. I applied full throttle a few times today but did not exceed 6,500 RPMS. I will gradually increase revs as the manual requests.

Thanks again for the info!



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hota
02-24-2003, 10:59 PM
You need to have the clutch engaged with the tranny in neutral when you throttle blip. This is called double-clutching.

Say you want to put it into 1st driving at about 25 mph. This is what you need to do:

- declutch and put the shifter from 2nd into neutral
- engage the clutch and blip the throttle
- declutch and slide the shifter into 1st
- engage the clutch

Some people don't think this is necessary, but try shifting into first at speed without doing it...you'll ruin your synchros.<br><p align="center">
<img border="0" src="http://www.howardandmira.com/bmw/m3sig2a.jpg"> <br>
<align="center"><font face="Tahom"a size="2">E46 M3 Ti Silver/Imola<br>Created 18 June 2002</b></p>

M3rader
02-24-2003, 11:01 PM
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StMedina
02-24-2003, 11:02 PM
i dunno...my buddy though rigged up a system to suck the cigarette smoke out of the house....


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CorpusChristi,TX

PorscheMaster
02-24-2003, 11:11 PM
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Los Angeles, California

Sharifm3
02-24-2003, 11:12 PM
from a fellow curry cooker, get a thermador range. No problems with smelly clothes or anything.

VM3
02-25-2003, 12:54 AM
just wanna be sure
\"engage\" the clutch means pressed (step on) the clutch right?
or the other way around?

i was a little confused because of the engage in term of human and the clutch pedal or engage for the clutch and the flywheel.
anyway
thanks<br>



Life is a_bitch, so_**** it.
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'02 M3, 6Spd
Boston, MA

gusser
02-25-2003, 01:25 AM
You disengage the clutch as you press your foot to the floor and engage the clutch as you are letting up on the pedal.

VM3
02-25-2003, 01:28 AM
<br>



Life is a_bitch, so_**** it.
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'02 M3, 6Spd
Boston, MA

PorscheMaster
02-25-2003, 01:58 AM
<br>
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Los Angeles, California

arig
02-25-2003, 02:35 AM
double clutch is:
1)brake
2) with brake depressed, hit clutch and shift into neutral
3) release clutch, and with brake depressed, blip throttle
4) hit clutch, and complete the shift
5) release clutch and brake and press gas

if you blip throttle with clutch depressed, you will burn the clutch out<br>2001 LSB/Grey
6speed, Prem, Cold, HK, Adj.
20% Tint
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CBsaksiri
02-25-2003, 02:50 AM
you described heel-and-toeing AND double-clutching, at the same time.

Hota is right, he described double-clutching alone...

and the reason you blip the throttle in neutral during a double-clutch is because you want to mate the input shaft of the transmission to the engine so you can set its speed (by blipping the throttle), but attach no gears.
<br>
<B>CBsaksiri</B> Sunnyvale, CA
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VM3
02-25-2003, 02:51 AM
<br>



Life is a_bitch, so_**** it.
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'02 M3, 6Spd
Boston, MA

CBsaksiri
02-25-2003, 02:55 AM
double-clutching is a very valuable thing to learn. the reason 1st and 2nd and 3rd are triple-synchro'ed is that there is a lot of force required to synchronize the gear speeds in that heavy gearbox...

better to avoid the wear (SMG does it). besides, sometimes waiting for the synchros to work is not an option... double-clutching can make certain shifts faster, smoother, and easier.<br>
<B>CBsaksiri</B> Sunnyvale, CA
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StMedina
02-25-2003, 03:12 AM
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CorpusChristi,TX


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