Downshifting Noise
Dec 16, 2004 | 07:14 AM
#16
Originally Posted by avengerhed
almost, you're right about double clutching, only you want to let the clutch up when the stick is in neutral, otherwise its no different than just sliding right from 3rd to 2nd and then rev-matching...with the clutch depressed, the rev-matching does nothing for the transmission, only rasises the engine revs
try
1. push in the clutch
2. put the car in neutral
3. let out the clutch
4. rev up (500 - 1000 rpm, depending on gear, speed, purpose of shift)
5. clutch in
6. put the car in the lower gear
7. clutch out
it will save your synchros and your clutch parts, and it leaves you in a better rev range for accellerating
try
1. push in the clutch
2. put the car in neutral
3. let out the clutch
4. rev up (500 - 1000 rpm, depending on gear, speed, purpose of shift)
5. clutch in
6. put the car in the lower gear
7. clutch out
it will save your synchros and your clutch parts, and it leaves you in a better rev range for accellerating
My technique removes your step 3 and 5. Try reving with clutch "in." It's much faster
Dec 16, 2004 | 07:26 AM
#18
Originally Posted by 4-BNGR
My technique removes your step 3 and 5. Try reving with clutch "in." It's much faster
Originally Posted by illegalakkord
hehe but then "technically" its not "double"clutching, its "single clutching" 
Dec 16, 2004 | 07:39 AM
#19
My car has a sound like you are describing. Its only during down shifting, and seems to be louder if you don't rev match. You don't have to be going fast either. As soon as the clutch grabs it stops. I've looked around the forums and asked people about it and have concluded that its probably the throw out bearing bearing out. I have 19k on my car.
Dec 16, 2004 | 08:19 AM
#21
for me its not a whine like the snycrhos. its a distinctive creak. like an old wood floor. stops right away. i have 19,xxx on stocker clutch maybe a throwout bearing. i wont worry about it until the clutch doesnt work then hello ACT. clutch warranty is until 15K miles right??? in which case i wont have one.
Dec 16, 2004 | 08:32 AM
#22
My mother's clutch in her 328ic makes the same noise releasing the clutch on occasion. Hers is directly related to the clutch pedal and piston moving in and out and has nothing to do with the tranny and doesn't affect performance in any way. Just an observation.
Dec 16, 2004 | 09:18 AM
#23
Im going to make an appointment to get it checked. Im just afraid they will joyride and beat on the car to reproduce the noise that I am experiencing. I guess I'll bring it in the afternoon when there is a lot of traffic.
Dec 16, 2004 | 09:38 AM
#24
Originally Posted by hkfeet
Im going to make an appointment to get it checked. Im just afraid they will joyride and beat on the car to reproduce the noise that I am experiencing. I guess I'll bring it in the afternoon when there is a lot of traffic.
personally, i have the same worry when bringing my car anywhere (that's why i got tires/wheels from tire rack instead of a local tire shop). my dealer has an "Evo tech" that drives/works on all the Evos that roll in. That made me feel a little bit better, thinking, "maybe this isn't just some guy that has never driven an evo before and as such, beats the crap out of it."
Dec 16, 2004 | 09:45 AM
#25
Evolving Member
Joined: Jul 2004
Posts: 150
Likes: 0
Originally Posted by hkfeet
Im going to make an appointment to get it checked. Im just afraid they will joyride and beat on the car to reproduce the noise that I am experiencing. I guess I'll bring it in the afternoon when there is a lot of traffic.
Dec 16, 2004 | 10:39 AM
#27
Originally Posted by oguratevo
I Agree! Save the tranny wear when downshifting, Use your brakes, cheaper to replace than tranny/clutch parts.
as long as you do it right (double clutching and rev matching), downshifting to slow or prepare for a turn is totally fine.
Last edited by avengerhed; Dec 16, 2004 at 11:18 AM.
Dec 16, 2004 | 02:35 PM
#29
I have the same thing you guys are talking about. This just happened after about 24K miles. I currently have 29K. I do not get this noise on every down shift, just once in a while. Do any of you guys get a vibration for that 1 second in your clutch pedal also?
Dec 16, 2004 | 02:59 PM
#30
I just recently had my clutch replaced at 17k (ACT HDSS awesome clutch), but before i got it done, when i would let out the clutch from 3-2 ,it would make a humming noise if i didnt rev match..not too loud, but it's there. I dont know if thats what your noise is, but i asked the mitsu tech about it when he replaced my clutch and he said it was probably because the surface of the clutch was somewhat warped and smoothed out and that the sound was an audible slipping noise of the clutch when it tried to grip when letting it out in 2nd.