[WRX_XB9R]

When shifting hard/ fast from 1st to 2nd today I had a loud bang that came from the tranny or differential. I had heard similar things but nowhere near as loud from my WRX. The only thing that I can remember that was even remotely close was from a ride I took in and EVO6 full rally car in Japan. However that thing banged every time the gear was changed.

Am I hurting something or is this normal for this car? If is normal than the system is locking in very hard and fast. BTW it pulled really hard when I did this.

 

[CloNeGTS]

Even with 3 synchros on second, you do still need to allow the transmission to change speeds. If you are pulling a Hulk Hogan on that shifter, you'll be banging gears (that's where the term comes from).

Fast is fine, but ssslllliiiiiddddddddeeeee it in there......smooth like.

 

[DVTURK]

I have noticed the same thing but I am now able to avoid it by revv matching and just getting use to the clutch.

Apparently, others on NASIOC have the same problem and it is "normal"

http://forums.nasioc.com/forums/showthread.php?s=&threadid=374510

 

[WRX_XB9R]

I have had happen a few more times with various amounts of noise. Basically as I figure it I am shifting faster than the engine can spool down to match rpm. I have to hesitate before releasing the clutch (or slip it) to keep from hearing the noise. Now this is only with a true speed/ power shift and only from 1st to 2nd. A much less agressive noise happens from 2nd to 3rd. I have not been redline in 3rd yet to see if it happens from 3 to 4.

Read the other forum and it seems that this is indeed the sound that I am hearing.

I guess I will just have to slow down.

 

[sakura-iro]

let me guess, is this your first awd car? it'll take a little bit of time to get used to shifting it smoothly, but you'll get the hang of it eventually. in the mean time don't be too rough, the bang isn't a good sound.

 

[daghdha]

this is also my first awd car...and I have trouble shifting smoothly, but I Think it's because I'm coming from the honda tranny, which is smooth as butter...

are there techniques for shifting smoothly when accelerating hard?

josh

 

[gasguzzler259]

www.subaruwrxparts.com sells a rear differential bushing kit for $30 to solve this problem. They say it is designed to lock the front of the rear differential support outriggers to where they meet the body.

 

[SnowbordrWRX]

I have noticed the same thing but I am now able to avoid it by revv matching and just getting use to the clutch.

Apparently, others on NASIOC have the same problem and it is "normal"

http://forums.nasioc.com/forums/showthread.php?s=&threadid=374510

How do you rev-match when up-shifting?

 

[4MLA1FN]

easy. just let the revs idle down.

 

[SnowbordrWRX]

Mits giving $100 if you drive Evo then buy something else...

:lol:

It does that automatically!

 

[4MLA1FN]

yeah, but you still need to put it in gear at the right time.

 

[sprinkdawg]

I hesitate by leaving the shifter in the neutral position for about 1/3 of a second during upshifting. You'll tear up the tranny by shifting hard. Try thinking about what you're doing while you shift- clutch in and gas off, out of gear, neutral, in gear, clutch out and gas on. Try saying this to yourself why you shift (pretty quickly), it'll save the tranny.

 

[bi11y]

but what about those of us who want to shift fast when we race?
^_^
will those bushings really make that much of a difference?

 

[blueballs]

Try thinking about what you're doing while you shift- clutch in and gas off, out of gear, neutral, in gear, clutch out and gas on.

I'd like to hear you say that 3 X fast.... What a toungue twister.

 

[WRX_XB9R]

After a lot more miles and one AutoX I have found the situation to only happen when shifted quickly in a straight line. If you are shifing quickly but turning it does not make any noise. With just a little turn it makes just a little noise.

 

[sprinkdawg]

but what about those of us who want to shift fast when we race?
^_^
will those bushings really make that much of a difference?

That is what I do when I race. I race in SCCA on different road courses throughout the Southeast. Your not losing any time, because when you shift hard and release the clutch, the engine revs will fall to match engine and tranny speeds.

 

[bi11y]

ok

 

[awilson529]

In my WRX (when it was newer, or had a fresh clutch for that matter) would "bang" form the 1st to 2nd shift when I would let the clutch out very fast. Its just the clutch engaging and not slipping AT ALL. It wont hurt anything if not done on a consistent basis.

 

[gametime2387]

Hate to bring up old threads but I just bought an 04 STI and I have had this happen to me too when I shift, but I also heard it once when I braked kinda hard. Is that normal?

 

[polyol]

List of well know STi thumps and thuds...

1.) Infamous rear strut clunk.

2.) Infamous rear diff clunk.

3.) Steering thud...less known

My guess is a 1st to 2nd shift sound is the rear diff clunk. TIC's sexy rear end kit will clear up that.