Quote:
Originally posted by P10DET
You are correct about the harmonics, but only to a degree. Mike Kojima calculates that the the danger is quite minimal with the SR20.
I remember reading the specifics, and they are in the SE-R Mailing List archives, but I don't remember them off the top of my head.
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I found Mike's write up on se-r.net.
http://www.se-r.net/car_info/engine_...rive%20Pulleys
Looks like these things are OK. I guess it is a use at your own risk part. Results will vary. I am guessing also that these pulley's might not cause problems, but might amplify current problems.