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Sharp knock[s] in the bottom when dropping the gas?

E28 technical advice asked and given! Troubleshooting, modifications and more.
California Dreamin'
Posts: 691
Joined: Jul 12, 2007 12:28 AM
Location: Californee

Post by California Dreamin' »

shagrath wrote:
California Dreamin' wrote:What car do you have?

If it's not the center support bearing (and I agree with above about accell vs. decel) then the next thing I'd look at is the harmonic balancer. If your car has one - not sure about eta's.
I think the HB (yes, many etas had em) would make scraping noises rather than thumping noises. Not to mention he mentioned middle-rear, not up toward the front (where the driveshaft would meet the output of the tranny).
Whatever, YMMV. When the balancer went on my E28, it made a thumping noise. No scraping. When the thumping is intermittent, it's hard to tell where it's coming from.
vt
Posts: 94
Joined: Apr 01, 2009 9:44 PM
Location: Hot Southwest

Post by vt »

boardsportsrule wrote:it's quite simple..5bolts to take off, and put back on, and makes a world of difference.
You said five bolts, that's just for the diff mount. Bentley says also remove the front and side bolts and disconnect the sensor - I understand you didn't do that, and the sky didn't come crashing down?

Trying this (five bolt) version now, hope it works.

Update: Yes, it works. And yes, it's the diff mount this time. Thanks everyone for words of wisdom.


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surfdawg
Posts: 31
Joined: Sep 22, 2010 6:46 PM
Location: SoCal

Post by surfdawg »

wkohler wrote:MAKE SURE YOU ORDER THIS ONE!

http://www.autohausaz.com/search/produc ... al%20Mount
That link no longer works at Autohausaz.
Here's the new one...
http://www.autohausaz.com/search/produc ... al%20Mount

AHAZ wants $75 vs 58 from RMe

I bought one from RMeuropean for 65.30 (shipping included).
http://www.rmeuropean.com/Part-Number/D ... 14693.aspx

Thanks for the help.
surfdawg
Posts: 31
Joined: Sep 22, 2010 6:46 PM
Location: SoCal

Post by surfdawg »

surfdawg wrote:
wkohler wrote:MAKE SURE YOU ORDER THIS ONE!

http://www.autohausaz.com/search/produc ... al%20Mount
That link no longer works at Autohausaz.
Here's the new one...
http://www.autohausaz.com/search/produc ... al%20Mount

AHAZ wants $75 vs 58 from RMe

I bought one from RMeuropean for 65.30 (shipping included).
http://www.rmeuropean.com/Part-Number/D ... 14693.aspx

Thanks for the help.

Ordered it from RMeuropean on Wed at 3:30 p.m.. It arrived on Thursday at 12:15 p.m. - 7 bucks for overnight shipping.
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