With all of this talk of PCAs and car weights, I'm curious how much 100 lbs (and other increments) effects the car's performance. Yes, I totally understand the obvious physics and recognize that weight does impact performance in several area.

For example, people have talked about adding weight to the RX7s to get it into ITB. Many think that at its current weight, it would simply be too fast.

How much of a difference would an extra 100 lbs make? To make things a little simpler, lets assume the weight will be put in the drivers side floor.

I'm just trying to get a better understanding of how much this would impact a car. What results has World Challenge seen when increments of weight has been added? At various tracks, what was the time difference?

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Dave Gran
NER #13 ITA
'87 Honda Prelude