Quote:
Originally Posted by panzerfaust
im very interested what you will end up with. my lighten and stiff m491 is pretty understeery with 225f 245r. i have to confirm what TB's are in the car. the dampers were revalved much stiffer at the bilstein at there place in SD according to the build sheet.
be wary with guys with normal narrow body cars. there geometry are different and dont have the added anti dive in front giving it unersteer. rear pick up points are relocated too.
perhaps chasing a 930 set up would be more appropriate for m491 cars? i driven my buddies 930 with full on elephant set up with ASP and it drives like no other G bod 911. it makes my old 930 seem like a lazy sloth. the kicker is his car is maxed out on TB and tire size but rides much much better than my two factory wide bodies with softer TB's.
my personal opinion is dampers are often overlook compared to the attention given to TB's and bars selection. the digressive valving seem to work pretty well but proper 2 or 3 way dampers may be the way to go though they are $$$$. my penskes dampers on my racecar was 6k for a set :-(
in my experience dampers have a much larger effect on ride quality than springs rates for those of us trying to build a DE street car. 3 ways would help a lot since u can tune the hi and low speed frequency separately. kinda like having your cake and eating it too. what you probably dont want to hear is race type dampers with there precise valving need frequent servicing.
cheers
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Interesting points. I assumed the spring rate changes on the 930 was due to the added weight over the rear. The front to rear ratio of 21/30 is close to the stock 930 ratio though. Does the M491 have anti-dive? What does it look like? If its thicker spacers in the front a-arm mounts mine look like the normal 911 ones.
Ill post in here when I get the car back together. When I get to do some DEs it will probably be with a friend who races a 996 GT3R so Ill let him take it for a lap or two and see what he thinks. His opinion will be more valuable than mine.