delrin in back?

[JShadzi at aol.com]

    Ok, here is my take.  The main advantage to delrin bushings, even in the 
front, is not in straight line driving but when the wheel is turned.  To test 
this, kick the tire with the front wheels straight, and with the front wheels 
turned to full lock.  Notice how there is little movement or "bounce" when 
the wheel is straight, and how there is multipel cm of movement when the 
wheel is turned.  Your rear wheels do not turn, and thus, you will see with a 
firm kick, that there is not as much need for stiffer contol arm bushings in 
the rear than in the front.  
    Now, granted, Delrin bushings will be more precise and prevent any severe 
deflection in the rear control arm bushings regardless of price, but if you 
are saving pennies for other upgrades, I would say skip the delrin in the 
rear because the difference over the stock bushings is minimal when compared 
to the front, where they are a must IMO.  I will likely do them in the rear 
in the near future, but honestly, the $100 will be better put into a bigger 
intercooler, etc.
    As far as durability, delrin bushings are excellent.  I have been driving 
on some for about 10k miles, and on the race car we have had the same 
bushings on there for 3 years, despite multiple shock and suspension 
replacement items.
Javad