76Y82

Background info:
Car is a 2004 with original differential, clutch, etc. Just turned over 40k miles.
It has revshift motor mounts/trans mount insert and short shifter. The rest of the car is stock.

When I begin to pull away from a dead stop, the rear end begins to shake a good amount. Feels almost similar to wheelhop, but not as violent. This is in normal conditions, slow city driving.

If I give the car minimal gas as I let the clutch out, it shakes the worst.
If I give the car more gas and pull from the line a little harder and slip the clutch more, there is minimal or no shaking.

Does the clutch need replacement? Could it be related to the differential bushing? If the diff bushing is completely worn out, would it allow enough movement to cause a low speed harmonic?

I'm not sure what the first step to solving this issue should be, so I'd appreciate any help.

isis

iTrader: (1)

If you're at 40k on the original rear diff bushing that's where I'd put my money first.

Even if it's not shot, all the other mounts being firm might make the 'rubber-banding' of that last bushing more obvious to you now. Fwiw, I have the rear diff bushing and trans insert from revshift and cradle bushings from CS. The clutch 'give' is more apparent to me especially when the car is cold so it could be both.

76Y82

That's what I was thinking, I've had the revshift diff bushing sitting on a shelf for 8 months, just haven't had the time to install it.

I definitely notice it more in the first 15 minutes of my hour commute while the car is cold.

voodoochikin04

iTrader: (3)

Clutch chatter can feel like the rear of the car is shaking.. That's how mine used to feel and it did it in the morning on my way to work. Just a possibility.

Becker

iTrader: (4)

I think that sounds like a clutch chatter. Dual mass issue.

egress

Clutch chatter sounds like it. Whole car shakes. Mine does that all the time.

lowoctane

Time for a clutch! Mines does it like a champ. I tell people its because of all the power.

76Y82

Guess the consensus is clutch chatter. Thanks guys.

I can drive around it by just bringing the revs up a little more. Hopefully it'll last until winter when the car goes away.

lowoctane

It should last as long as you don't try launching the car any time soon. Mine was doing it for months, I just babied it.

Mike Cordero

iTrader: (122)

Sorry about my ignorance but what is Clutch chatter?

bmylez

iTrader: (3)

It's technically flywheel chatter. The factory flywheel has two halves connected by springs to make it softer/easier to engage the clutch. When the flywheel wears out, it starts acting funny.

-Ross-

iTrader: (2)

Mine does this crap in the morning. I figure it's clutch chatter. I will punch the stock clutch and misc. bushings/mounts in the face once I remove them to replace.