Car #: 77
Year : 1990 Posts: 74
Some more newbie questions: (1)are these polyurethane bushings legal for SM? (2) Does anyone here have experience with these to know if they are an improvement over rubber bushings? (3)If so, how much better? Thank you!
Region: So Cal
Year : 90 Posts: 74
In classes where they are legal they tend to wear better and maintain form better. If you are using saggy bushings in an older production car when you switch to something like an Energy you'll be able to hold your settings better.
Region: Houston; SWDIV
Car #: 15
Year : 99 Posts: 680
My first message was from my phone, so it was just the fact that it was illegal to run the subject bushings.
But here is a more complete answer if curious.
1) As I said, and others, it is not legal to run poly bushings. It is easy to tech. Anything other than OEM Mazda rubber bushing are not legal. 2) Can't comment since I have not run them. However, Mazda does make competition bushing that are (I think 40%) stiffer than OEM and expensive. I don't think these have ever been made legal, but they are marked and look like OEM; so they will fly in the tech shed. I have run then in a previous SM, but not in my 99. 3) From my 8 years of running SM, I think that running the competition bushings are a waste of $700-800 dollars (plus labor if you can't change them yourself). Like I said, I don't run them in my 99 I it hasn't slowed me down. For the money, more track time, running data system or thinner shaves will get you more bang for your buck.
So as long as your bushing are in good shape; don't worry about it. There is a lot more areas for you to focus on.
-------------------- James York
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