The Random E46/ZHP Question Thread

[704sw]

theres no difference between non M chassis and M chassis in regards to the mounts other than the rubber used. the engines albeit different in non M.. all use the same alloys in their subframes, mount arms, cross members, nuts bolts unibody.....

i dont see any reason for a non M owner to care more about NVH over an M owner other than a perception thing where they have purchased a NON M and expect non M noise and vibrations...

which is fine but when you track your car that seems a little odd to me lol.

I think my issue with poly tranny mounts was not pairing them with poly engine mounts. It felt weird (unbalanced maybe is the right word?), and made quite a rumble in the car. It wasn’t loud, but the shifter shook a bit.

The reason I say I’m more tolerant to NVH than most is because I’m single, no kids, seldom have passengers, and track my car. Meaning I have nobody in the car to make comfortable. My car drones, it’s stiff, it’s not quiet in the car, and my brakes squeal like a mofo. And while I really liked the crisp feeling of the poly tranny bushings it just wasn’t something I wanted to live with every day during the weeks or months between my track days.

[az3579]

theres no difference between non M chassis and M chassis in regards to the mounts other than the rubber used. the engines albeit different in non M.. all use the same alloys in their subframes, mount arms, cross members, nuts bolts unibody.....

The engines and transmissions being different is reason enough to use a different material, hence a different feeling in the car. Harmonics are engineered very precisely with the manufacturer.

i dont see any reason for a non M owner to care more about NVH over an M owner other than a perception thing where they have purchased a NON M and expect non M noise and vibrations...

Apples and oranges. Different drivetrains = different results = different expectations.



Also, non-M owners tend to have different requirements than M owners as far as what is acceptable in a daily driver. I'm sure there's a higher percentage of M3 owners who track their cars compared to 330 owners who do... what I see at the track every time tells me this.

[ZHPizza]

The wife's touring pulls to the left under braking, but doesn't pull at all during normal driving. I'd guess a suspension component was at fault, but the front left rotor is wearing down faster and that wheel dusts up significantly worse than the other three -- to the point that I suspected a stuck caliper.

So do I have, like, one really beefed up caliber trying to outlift all the other caliper bros?

Edit: Thinking now that it's a sticking right caliper that won't close enough and the left is doing all of the braking

[danewilson77]

The wife's touring pulls to the left under braking, but doesn't pull at all during normal driving. I'd guess a suspension component was at fault, but the front left rotor is wearing down faster and that wheel dusts up significantly worse than the other three -- to the point that I suspected a stuck caliper.

So do I have, like, one really beefed up caliber trying to outlift all the other caliper bros?

Edit: Thinking now that it's a sticking right caliper that won't close enough and the left is doing all of the braking

Last brake fluid flush? On last brake job, were the caliper guide pins inspected and lubed?

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[YoitsTmac]

In regards to UUC transmission bushings, I had some paired to M3 motor mounts. There was a little vibration at idle. The “deal breaker” for some is that at around 1800rpm, you’re in harmony with the natural frequencies of the car. It’s pretty unpleasant. But, just change gears. I’m 20 so take that as you will. YMMV

[holyc0w]

I had 2 flat black gaskets fall out when removing the door panel. What are they for? The 2 bottom bolts?

[ZHPizza]

I had 2 flat black gaskets fall out when removing the door panel. What are they for? The 2 bottom bolts?

Small foam discs? Those go on some of the door panel clips. I think the ones around the lower speaker.

[holyc0w]

Small foam discs? Those go on some of the door panel clips. I think the ones around the lower speaker.

Yes

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[John in VA]

I had 2 flat black gaskets fall out when removing the door panel. What are they for? The 2 bottom bolts?

I believe they were on all of the door clips initially, according to my 2000 328i, 2002 325xi & the ZHP.

[Yankeefan]

Can someone tell me the part number/where to buy the clips for the black exterior door moulding for a sedan? I can only find the M3 ones on ECS so I suppose they are different part numbers.