I haven't tried this too many times, but whenever I do I notice what you are noticing as well. I think that even if you are shifting normally, letting the clutch out extremely fast makes the bang sound. (And I'm not talking about the notorious clunk that comes during normal shifting. I have that too, and it's different.)

edit: Actually the sound you are hearing may just be the notorious clunk in an extreme form. I am no expert, but my guess is that it has something to do with the speed of the clutch disc being lower than the speed of the engine. When you let the clutch out extremely fast inbetween a shift, it is either causing the engine to jolt on its mounts, or it is causing the transmission to jolt.

 

it may be your drivetrain. my buddy had a BMW and he raced it hard all the time and soon enough he had to get the cup link replaced in the drivetrain cuz it got pounded so hard.

 

Mine does this, but i put it down to the usual 'bang when shifting' problem that seems to be something to do with the carrier bearings.

On mine it seems like the same thing, only louder when you shift fast.

 

Carrier bearings and motormounts.

 

actually i do have carrier bearing problems...i think my rear one anyway, how much of a price is it to repair that siunce we're on the subject??

 

yep carrier bearing is worn...i'm not sure what happens if you leave it alone...lots of guys driving with worn bearings...good solid thuds under solid shifts.

 

There's another discussion going on about this here.

My car has been doing it as long as I've had it. Does anyone know how much these parts cost to fix?

 

I can get my car to do that any time i want but i don't do it =). I've noticed it will do it if you completely let off the clutch before giving it any gas. I never let off the gas completely. I know how to shift fast as shit and don't get that sound..but i know how to shift real slow and get that sound.

 

My car did that when my output shaft was worn to hell. Once I put in the new output shaft it no longer does that. Turbo Tension's 93 R/TT is doing that now and I saw when I put his clutch/flywheel in his car this weekend his output shaft and sleave in his transfer case were nearly gone. You might want to pull off the transfer case and take a peek. It's better than stripping the teeth off your output shaft while you're on the road and left dead in the water.

 

Motormounts

Motormounts definately!!!

 

if its a "thud" i wouldnt worry about it to much...

if its a "bang" then listen up...

My last time at the track with my vr4 I was getting "bangs" out of my drivtrain. I though "hmm that doesn't sound good" and of course continued to dump the clutch and powershift. Two runs later I busted my transfer case into 5 pieces which took the bellhousing with it. Not a pretty sight. Be careful. Get under there and make sure you have the pencil bracket on the x-fer case. Make sure that all the bolts are tight. Perhaps remove the x-fer case to see if the inside teeth are wearing. If they are you can adjust the gear outward to grab more of the output shaft.

 

I think it's basically just a shock to your drivetrain when you're letting off the clutch so fast. Sometimes in the early morning driving when I'm not fully awake my shifts suck and I let the clutch out too quickly, I get the same thing, but only on the 1st to 2nd gear shift.

 

1 Question.... what about the clutch?

When I changed to the ACT 6 Puck from my stock... I started gettin a thump noise whenver i change gears. Unless I let the clutch out slowly. Thats normal for these clutches right? Or could it be my motor mounts?