Rear Diff Options - Power Oversteer Found Here
i hope everyone gets a chance to do that to see how different it is
Looking forward ton trying my car out. John and I met upland I forgot to give him my rear diff. I had it apart anyway so took some measurements and went to work on it. It'll be back in the car tomorrow, hoping for the teacake with it next week. Hopefully what I did works.
if rwd cars are ok for track wouldn't a rear biased evo be fine as well? obviously with some set up changes to suit a track as opposed to something like an autocross. don't lambos and etc run like 10/90 at their most extreme?
im just not sure if the 60/40 is necessarily faster than an acd, or at least one with the acd tuned - otherwise wouldn't all the overseas competition evos switch to a rear biased center diff as opposed to tuning the acd? the 60/40 may very well be faster, i'd just like to see it in direct comparison to the acd system
im just not sure if the 60/40 is necessarily faster than an acd, or at least one with the acd tuned - otherwise wouldn't all the overseas competition evos switch to a rear biased center diff as opposed to tuning the acd? the 60/40 may very well be faster, i'd just like to see it in direct comparison to the acd system
I would think the ACD is like having a fully tunable mechanical diff, but can be tuned electronically instead of changing mechanical components.
I have a measly '03 though, so I'm not familiar at all with the ACD system and exactly how much bias it can send to the rear.
I would imagine they probably keep the ACD for tuning versatility. What works best on a clean and dry track at 100F is going to be very different then what would work on that same track on a 60F degree day. Being able to adapt easily is a big benefit for competition.
I would think the ACD is like having a fully tunable mechanical diff, but can be tuned electronically instead of changing mechanical components.
I have a measly '03 though, so I'm not familiar at all with the ACD system and exactly how much bias it can send to the rear.
I would think the ACD is like having a fully tunable mechanical diff, but can be tuned electronically instead of changing mechanical components.
I have a measly '03 though, so I'm not familiar at all with the ACD system and exactly how much bias it can send to the rear.
I didn't mention it because its simply...out of my budget.I contacted them a few months back and was told they dont offer it anymore. They sent me info to contact quaife who had something similar. The quaife center diff didnt seem to be a 60/40 like the gsc was from researching it more, it was the standard 50/50.
if rwd cars are ok for track wouldn't a rear biased evo be fine as well? obviously with some set up changes to suit a track as opposed to something like an autocross. don't lambos and etc run like 10/90 at their most extreme?
im just not sure if the 60/40 is necessarily faster than an acd, or at least one with the acd tuned - otherwise wouldn't all the overseas competition evos switch to a rear biased center diff as opposed to tuning the acd? the 60/40 may very well be faster, i'd just like to see it in direct comparison to the acd system
im just not sure if the 60/40 is necessarily faster than an acd, or at least one with the acd tuned - otherwise wouldn't all the overseas competition evos switch to a rear biased center diff as opposed to tuning the acd? the 60/40 may very well be faster, i'd just like to see it in direct comparison to the acd system
Nucci is saying that the front tires are soo overworked on an Evo if you can remove the power applied to the front wheels and move it to the rears... then you'll have a higher overall grip level.
The fronts wont get as hot...the fronts will be able to focus mainly on steering the car and less on propelling it.
I hope that makes sense.
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edit - you're mostly there.... I'm saying take power away from the loaded up, suspension compressed front tire (outside of corner) and add it to the less loaded, suspension extended front tire (inside). Nobody that I know of lifts inside fronts on EVOs, so you shouldn't spin the inside tire.
Last edited by nucci; Sep 26, 2010 at 10:59 PM.
edit - you're mostly there.... I'm saying take power away from the loaded up, suspension compressed front tire (outside of corner) and add it to the less loaded, suspension extended front tire (inside). Nobody that I know of lifts inside fronts on EVOs, so you shouldn't spin the inside tire.
edit - you're mostly there.... I'm saying take power away from the loaded up, suspension compressed front tire (outside of corner) and add it to the less loaded, suspension extended front tire (inside). Nobody that I know of lifts inside fronts on EVOs, so you shouldn't spin the inside tire.
one sample of a front inside wheel lifting (at least enough to get wheel spin)
Last edited by griceiv; Sep 27, 2010 at 09:47 AM.
Ah but you see... being 5'6" myself and most of my weight being low set... gives me a cog advantage over you tall people. therefor I will not lift inside front and lay rape cakes all around the corners!
haha. gotcha.
haha. gotcha.
Yes, front inside for sure lifts. Having the powerband like Project White made lifting that inside front tire easy. Here is a quick picture of one example I could find of the car. This is on just a set of RE01 tires, this car is full weight with a 4.11:1 final drive too. Drop some weight, add some tires and put the stock final drive back in it and I bet it would lift it 4+". The BadBish, even with it's far-from-an-autocross set up I'd swear will pull the inside front.
Enjoy the picture:
Enjoy the picture:
Last edited by David Buschur; Sep 27, 2010 at 11:57 AM.