Go Back   i-Club > Engine and Drivetrain Tech Forums > Drivetrain
Sign in using an external account
Register Forgot Password?
Register Photos FAQ Members Search Today's Posts Mark Forums Read ExperienceUsed CarsGarageVendors TSB & Recalls
Welcome to i-Club

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 01-05-2004, 06:03 PM   #1
Registered User
Personal Sales Rating: (6)
 
Join Date: Jun 2003
Location: Bay Area
Drives : 2004 Black WRX wagon
Posts: 1,518
thump in 2nd.

when i shift from 1st to 2nd while pushing it mildly, there is a horrible thump sound when i release the clutch. why is it?
Offline
 
Reply With Quote
Old 01-05-2004, 06:27 PM   #2
Registered User
Personal Sales Rating: (7)
 
Wingless Wonder's Avatar
 
Join Date: Dec 2002
Location: Sacramento CA
Drives : 02 Impreza WRX sedan
Posts: 10,040
If you're referring to the 'thump' sound from the rear of the chassis, it is a snubber deal that cushions the differential as the nose rises under heavy acceleration.

--
0==WW==0
"…axles of evil…" - george w. bush
Offline
 
Reply With Quote
Old 01-05-2004, 06:54 PM   #3
Registered User
Personal Sales Rating: (0)
 
Join Date: Nov 2002
Location: -----------------
Drives : .............................................................................
Posts: 856
Points: 7,968, Level: 60
Points: 7,968, Level: 60 Points: 7,968, Level: 60 Points: 7,968, Level: 60
Level up: 9%, 182 to go!
Level up: 9% Level up: 9% Level up: 9%
Daily Activity: 0%
Daily Activity: 0% Daily Activity: 0% Daily Activity: 0%
Don't pop the clutch out so fast...that thump is the rearend trying to depart the car....be more smooth or second gear may be the next thing to go 'thump' and be gone.
Offline
 
Reply With Quote
Old 01-05-2004, 07:24 PM   #4
Registered User
Personal Sales Rating: (6)
 
Join Date: Jun 2003
Location: Bay Area
Drives : 2004 Black WRX wagon
Posts: 1,518
smooth. i try. like normal driving is nice and smooth. but when i try to gun it... eek.... makes me wanna take the foot off the gas. sounds like i'm breaking it.
Offline
 
Reply With Quote
Old 01-05-2004, 11:24 PM   #5
Registered User
Personal Sales Rating: (0)
 
Join Date: Nov 2002
Location: -----------------
Drives : .............................................................................
Posts: 856
Points: 7,968, Level: 60
Points: 7,968, Level: 60 Points: 7,968, Level: 60 Points: 7,968, Level: 60
Level up: 9%, 182 to go!
Level up: 9% Level up: 9% Level up: 9%
Daily Activity: 0%
Daily Activity: 0% Daily Activity: 0% Daily Activity: 0%
Let the clutch come all the way back up and THEN stomp it
No speed shift with AWD.
Offline
 
Reply With Quote
Old 01-06-2004, 07:54 AM   #6
Registered User
Personal Sales Rating: (6)
 
Join Date: Jun 2003
Location: Bay Area
Drives : 2004 Black WRX wagon
Posts: 1,518
hm... that's lame. but fine.....
haha.
Offline
 
Reply With Quote
Old 01-07-2004, 12:23 PM   #7
Registered User
Personal Sales Rating: (0)
 
Join Date: Nov 2002
Location: So. Ca., CA USA
Drives : 03 WRX / 08 Forester
Posts: 260
Points: 7,577, Level: 58
Points: 7,577, Level: 58 Points: 7,577, Level: 58 Points: 7,577, Level: 58
Level up: 14%, 173 to go!
Level up: 14% Level up: 14% Level up: 14%
Daily Activity: 1.8%
Daily Activity: 1.8% Daily Activity: 1.8% Daily Activity: 1.8%
Quote:
Originally posted by escaflowne
hm... that's lame. but fine.....
haha.
It's not lame. You can still shift quickly but it takes skill to do it without abusing the drivetrain. The WRX wasn't designed for clutch dumps, speed shifting, etc.
Offline
 
Reply With Quote
Old 01-07-2004, 01:53 PM   #8
Registered User
Personal Sales Rating: (6)
 
Join Date: Jun 2003
Location: Bay Area
Drives : 2004 Black WRX wagon
Posts: 1,518
aww. poo. i shoulda got a honda. haha. j/k. i love my rex
Offline
 
Reply With Quote
Old 01-08-2004, 07:27 PM   #9
Registered User
Personal Sales Rating: (1)
 
Join Date: May 2003
Location: www.tristatetuners.com
Drives : www.tristatetuners.com
Posts: 433
Points: 7,688, Level: 58
Points: 7,688, Level: 58 Points: 7,688, Level: 58 Points: 7,688, Level: 58
Level up: 69%, 62 to go!
Level up: 69% Level up: 69% Level up: 69%
Daily Activity: 0%
Daily Activity: 0% Daily Activity: 0% Daily Activity: 0%
If you slam gears and pop the clutch at high revs things break in a rex or in any car.

Be nice to her.
Offline
 
Reply With Quote
Old 01-08-2004, 08:06 PM   #10
Registered User
Personal Sales Rating: (6)
 
Join Date: Jun 2003
Location: Bay Area
Drives : 2004 Black WRX wagon
Posts: 1,518
i know... but then how do people race these things? i don't get it.
Offline
 
Reply With Quote
Old 01-08-2004, 08:41 PM   #11
Registered User
Personal Sales Rating: (1)
 
Join Date: May 2003
Location: www.tristatetuners.com
Drives : www.tristatetuners.com
Posts: 433
Points: 7,688, Level: 58
Points: 7,688, Level: 58 Points: 7,688, Level: 58 Points: 7,688, Level: 58
Level up: 69%, 62 to go!
Level up: 69% Level up: 69% Level up: 69%
Daily Activity: 0%
Daily Activity: 0% Daily Activity: 0% Daily Activity: 0%
There is a way to drive quickly smoothly. A little clutch finess can work wonders and is much better on your car than 5000 rmp clutch drops. Feed that clutch baby.
Offline
 
Reply With Quote
Old 01-08-2004, 09:02 PM   #12
Registered User
Personal Sales Rating: (6)
 
Join Date: Jun 2003
Location: Bay Area
Drives : 2004 Black WRX wagon
Posts: 1,518
clutch drops.. i can't even do it. i let my clutch out slowly. but sometimes tooo slowly. hehe. i'm soo affraid of gunning the car. haha. my friends call me a wuss.. it's cuz that thump sounds makes me feel like i'm breaking it. haha.

quick shifts? wait. how is it that a car is bad for "quick shifts". what am i supposed to do? granny?
Offline
 
Reply With Quote
Old 01-09-2004, 12:01 AM   #13
HTM WRX
Guest
Personal Sales Rating:
 
Posts: n/a
just be smooth...don't shock the drivetrain. shock to the drivetrain is the #1 reason trannies fail
  Reply With Quote
Old 01-09-2004, 10:32 AM   #14
Registered User
Personal Sales Rating: (0)
 
Join Date: May 2003
Location: north jersey
Drives : 01' RS Sedan silverthorne
Posts: 148
yeah I get this too when I'm accelerating hard and I mishift sometimes... I always thought it was the rear differential working hard...
Offline
 
Reply With Quote
Old 01-09-2004, 12:02 PM   #15
Registered User
Personal Sales Rating: (0)
 
Join Date: Nov 2002
Location: So. Ca., CA USA
Drives : 03 WRX / 08 Forester
Posts: 260
Points: 7,577, Level: 58
Points: 7,577, Level: 58 Points: 7,577, Level: 58 Points: 7,577, Level: 58
Level up: 14%, 173 to go!
Level up: 14% Level up: 14% Level up: 14%
Daily Activity: 1.8%
Daily Activity: 1.8% Daily Activity: 1.8% Daily Activity: 1.8%
Quote:
Originally posted by HTM WRX
shock to the drivetrain is the #1 reason trannies fail
....an arguable statement without proof, but I agree it could be a contributing factor in premature failures.

Folks just need to realize that the chances of a failure will increase when you use abusive shifting techniques. Personally, I don't "speed shift" my WRX or launch it hard (i.e. no weekend trips to the drags). I may not be able to achieve the 0-60, 1/4 mile times posted in Motor Trend magazine, but I never figured I could without being abusive. I'm still able to have loads of fun with my car and I can row through the gears relatively quickly without beating on my tranny. The WRX doesn't respond well to an overly-aggressive touch.

If you're gonna play.....you gotta pay.
Offline
 
Reply With Quote
Old 01-09-2004, 12:02 PM
I-Club
Subaru WRX




Paid Advertisement
 
 
 
Reply

Tags
1st, 2004, driveline, forester, thump


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


 




All times are GMT -7. The time now is 07:35 AM.


Powered by: vBulletin Version 3.8.7
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd.
SEO by vBSEO ©2010, Crawlability, Inc.

-= NOT AUTHORIZED OR APPROVED BY OR AFFILIATED WITH SUBARU OF AMERICA OR FUJI HEAVY INDUSTRIES LTD. =-