Quote Originally Posted by rex_racer View Post

Nice job on the Delrin front control arm bushings, I have been wanting to do that for some time now, but was worried about how the bushing would wear when the rear bushing can still flex and squish into other directions and thus cause an extra side load to the Delrin front bushing and cause premature wear. Prolly not as much an issue on a dedicated autox car, but since I daily drive mine, I don't change that rear bushing as often as I should haha. Keep us posted on how the Delrin front bushing works out, looks promising!
From my previous experiences with delrin in similar situations(potential loading in an axis different than the rotational one), the only wear I have seen is from normal rotational contact friction. The compression side loads didn't affect the delrins, in both my Evo and my Saturn, after 50k street/track. The bores in the delrins however were getting loose from friction and that's what made me refresh them at around 50k.Delrin is hard and can withstand a lot of compression(think delrin motor mounts that see lots of compression but no rotational contact friction, they last a long time).


The one MCPI just build for the MK4 TT/R32 adressed my concerns with friction wear by integrating greasable groves in the design. I packed the grooves with high temp synthetic grease and I also coated the contact surfaces with permanent dry film lubricant. These extra steps should considerably increase their life on the streets, however only time will tell by how much.


You can see the inner grooves, if look inside of the bushing laying down.
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Dry film lubricant coating of the metal pin(dries for a permanent lubricating coat)



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