Coilover Recommendations

[marolf101x]

Don,

did your 4-link have rubber bushings or R-joints?



And just so I understand your situation completely, you state "the harsh bang that occurs when driving over an abrupt drop in the road".

So lets explain this in extremes so we both know what we are describing, I can then explain what was happening in the real world.

So, in extremes:
-the road was smooth
-then the road had a crack and dropped 4 inches


---OR---

-the road was smooth
-there was an "indentation" in the road that dropped 2" below road surface
-stayed at that indentation for 5 feet
-then raised back to the previous road surface height

Scenario #1's ride quality is handled initially by the extension of the suspension.
Scenario #2's ride quality is handled mostly by the compression.

[dhutton]

Don,

did your 4-link have rubber bushings or R-joints?

And just so I understand your situation completely, you state "the harsh bang that occurs when driving over an abrupt drop in the road".

So lets explain this in extremes so we both know what we are describing, I can then explain what was happening in the real world.

So, in extremes:
-the road was smooth
-then the road had a crack and dropped 4 inches


---OR---

-the road was smooth
-there was an "indentation" in the road that dropped 2" below road surface
-stayed at that indentation for 5 feet
-then raised back to the previous road surface height

Scenario #1's ride quality is handled initially by the extension of the suspension.
Scenario #2's ride quality is handled mostly by the compression.

I had the rubber bushings. I would say it was scenario number 2. So a step response type scenario. I had a long discussion with Brett about the car. He gave me a list of items to check which I did. He even drove it but unfortunately we did not replicate the issue. He verified my shock settings also. He gave me a set of new springs with a different rate but the change was not significant. He also showed me the R joints which were new at that time. At that point I was pretty much done. I have seen quite a few others complaining of the same issue.

I have since wondered if some progressive rate bump stops would have helped.

Thanks,
Don