installing springs and sways. Tips please, bumstop?

[PfadtRacing]

Hi Jferrell88,

I cant speak to another manufacturers spring install procedure but I can explain why we reccommend cutting the bumpstops in our procedure. Our Pfadt drop springs provide a 1.25" drop approximately. As a result of this change in static ride height, the usable region of the damper travel is offset, to be approximately 1.25" lower. The Camaro has a very limited amount of bump travel to begin with, before contacting the OEM bumpstops. We recommend to trim 1" from the bumpstop in our installation procedure to give you back that 1.00" of damper travel, that is not influenced by the added spring rate of the bump rubber. We leave some bump stop in place to give a rising rate on big hits. Because dampers function by resisting the shaft velocity, this offset operating region has no negative effects on the component durability, or performance. There is absolutely nothing that becomes unreliable by doing this.

This conclusion was made from testing, and experiencing harsh bump characteristics that some have mentioned, who have not cut them. This of course, is just our position in regards to our own product installation. I hope that helps clarify the reasoning.

[Buffnshine]

Great info guys thanks for all the input. Love this forum

[Jferrell88]

Originally Posted by PfadtRacing

Hi Jferrell88,

I cant speak to another manufacturers spring install procedure but I can explain why we reccommend cutting the bumpstops in our procedure. Our Pfadt drop springs provide a 1.25" drop approximately. As a result of this change in static ride height, the usable region of the damper travel is offset, to be approximately 1.25" lower. The Camaro has a very limited amount of bump travel to begin with, before contacting the OEM bumpstops. We recommend to trim 1" from the bumpstop in our installation procedure to give you back that 1.00" of damper travel, that is not influenced by the added spring rate of the bump rubber. We leave some bump stop in place to give a rising rate on big hits. Because dampers function by resisting the shaft velocity, this offset operating region has no negative effects on the component durability, or performance. There is absolutely nothing that becomes unreliable by doing this.

This conclusion was made from testing, and experiencing harsh bump characteristics that some have mentioned, who have not cut them. This of course, is just our position in regards to our own product installation. I hope that helps clarify the reasoning.

thank you very much for the info i used your sway bar and spring install instructions and they were perfect for the job i did trim my bumpstops just as you indicated in your write up i would have definitely went with your products had they been available when i ordered my kit. but with my limited knowledge your write ups made it a snitch so thanks a bunch and tp everyone else for the input thanks alot the car looks great pics will be up soon.