Clunking from rear over rough roads with Penskes NA - Page 2 - LotusTalk - The Lotus Cars Community
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post #21 of 29 (permalink) Old 10-06-2017, 10:47 AM
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Sorry for the delay in getting this video posted. The original video I took didnít capture everything I wanted well. Then family and work stuff delayed the re-shoot, etc. Anyhow, here it is. And my advanced apologies as it's long and boring. I did my best to get as much objective filming of the spherical bushing/bearing to determine whether the play is normal or not.

Since I didnít provide any commentaries within the video, let me give some general background on my shocks. I have the Penske N/A that I purchased new. I received and installed them early October 2016. Iím guessing they have around 4k miles on them. If I were to take another stab on how these miles where driven, itíd guess around 2.5k highway (commute between SF Bay Area to Sacramento, CA for work), 750 general around town, and 750 spirited driving (SF Peninsula backroadsÖi.e. La Honda, Skyline, Pescadero, etc.).

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post #22 of 29 (permalink) Old 10-06-2017, 11:16 AM
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I get a clunking sound exactly the same as in your video. Not sure if this is normal but mine happened pretty early on...probably less than 1k mile before it started to happen. I have not experienced this with other cars with coilover systems.
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post #23 of 29 (permalink) Old 10-06-2017, 11:33 AM Thread Starter
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Glad I'm not alone. Thanks for sharing @Nobuyasu ! Has anyone from BWR responded if this expected? Does this pose a safety issue?
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post #24 of 29 (permalink) Old 12-10-2017, 04:38 PM
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Was there ever a resolution to this?
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post #25 of 29 (permalink) Old 12-11-2017, 10:46 AM
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I recently got my Penskes rebuilt and apparently they switched to a more robust spherical design. You can ask Fred about it (just call him up).

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post #26 of 29 (permalink) Old 01-09-2018, 03:31 AM
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Quote:
Originally Posted by Nessal View Post
Was there ever a resolution to this?
When no one wrapped this thread up I asked penske. This was their reply:

"The monoballs should move freely, but without any noticeable free play of the ball in the outer race. When the ball can be moved side to side or up and down, rather than just a swiveling motion, itís time for replacement"

"Give a man a match, and he'll be warm for a minute, but set him on fire, and he'll be warm for the rest of his life."
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post #27 of 29 (permalink) Old 01-09-2018, 05:23 AM
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Originally Posted by LionZoo View Post
I recently got my Penskes rebuilt and apparently they switched to a more robust spherical design. You can ask Fred about it (just call him up).
@LionZoo -

How many miles were you at before the rebuild?

Did you notice a drop off in performance or was it just time?

Did you get the 'more robust spericals' as part of your rebuild?
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post #28 of 29 (permalink) Old 01-09-2018, 10:10 AM
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@LionZoo -

How many miles were you at before the rebuild?

Did you notice a drop off in performance or was it just time?

Did you get the 'more robust spericals' as part of your rebuild?
I had about 11,000 miles and honestly it still felt fine. I had a bit of a brainfart that destroyed one of the bottom eyelets and so decided to go for the full rebuild. I wouldn't have rebuilt them if I hadn't been stupid. And yes, I did get the updated parts. We'll see how long they last.
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post #29 of 29 (permalink) Old 08-27-2019, 05:36 PM
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Originally Posted by LionZoo View Post
I recently got my Penskes rebuilt and apparently they switched to a more robust spherical design. You can ask Fred about it (just call him up).
Can I ask what the cost was to rebuild the Penskes?

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