Rear Diff Options - Power Oversteer Found Here
sorry for the off-topic-ness but can't seem to find as educated of discussion on the front differential.
To confirm facts, the evo 9 has a front helical LSD?
If so, on tight turns where you need to get on throttle on the exit to rotate the car, normally you would expect the outside front tire (and outside rear) to take the most beating (right?).
If so, why do you all think I am seeing the inside front tire taking the biggest beating? My driving coach mentioned it might be that the front differential is open and thus that inside wheel is spinning like crazy but with less traction (or the front LSD isn't that great).
And is the majority of differential upgrade talk primarily on the center and rear diff's because the primary objective is to get the car rotated as soon as possible, get rid of steering input and with that get rid of the situation I described?
To confirm facts, the evo 9 has a front helical LSD?
If so, on tight turns where you need to get on throttle on the exit to rotate the car, normally you would expect the outside front tire (and outside rear) to take the most beating (right?).
If so, why do you all think I am seeing the inside front tire taking the biggest beating? My driving coach mentioned it might be that the front differential is open and thus that inside wheel is spinning like crazy but with less traction (or the front LSD isn't that great).
And is the majority of differential upgrade talk primarily on the center and rear diff's because the primary objective is to get the car rotated as soon as possible, get rid of steering input and with that get rid of the situation I described?
^My guess would be due to the fact that there is less load on the front inside tire since the majority of the weight is on the outside tires.
This issue would be more apparent with an open diff but even with a limited slip it can still happen depending on the aggressiveness of the diff.
Just think about your rear diff for a second. The factory diff is an LSD granted its dumbed down from the factory. Nonetheless its a limited slip. Since it didnt have enough lockup you sent it to Jon and he worked some magic and you ended up with a more aggressive LSD. Now it works as you would imagine a limited slip should.
This issue would be more apparent with an open diff but even with a limited slip it can still happen depending on the aggressiveness of the diff.
Just think about your rear diff for a second. The factory diff is an LSD granted its dumbed down from the factory. Nonetheless its a limited slip. Since it didnt have enough lockup you sent it to Jon and he worked some magic and you ended up with a more aggressive LSD. Now it works as you would imagine a limited slip should.
Last edited by heel2toe; Jun 12, 2013 at 05:34 PM.
Good points. I guess I'm surprised to not see a bunch of people modifying the front differential as well but just might be thinking about it differently and/or adjust my driving.
I see TRE does some work on front diff's but doesn't seem to be as an extensive upgrade as the rear diff.
I see TRE does some work on front diff's but doesn't seem to be as an extensive upgrade as the rear diff.
^My guess would be due to the fact that there is less load on the front inside tire since the majority of the weight is on the outside tires.
This issue would be more apparent with an open diff but even with a limited slip it can still happen depending on the aggressiveness of the diff.
Just think about your rear diff for a second. The factory diff is in LSD granted its dumbed down from the factory. Nonetheless its a limited slip. Since it didnt have enough lockup you sent it to Jon and he worked some magic and you ended up with a more aggressive LSD. Now it works as you would imagine a limited slip should.
This issue would be more apparent with an open diff but even with a limited slip it can still happen depending on the aggressiveness of the diff.
Just think about your rear diff for a second. The factory diff is in LSD granted its dumbed down from the factory. Nonetheless its a limited slip. Since it didnt have enough lockup you sent it to Jon and he worked some magic and you ended up with a more aggressive LSD. Now it works as you would imagine a limited slip should.
I think the rear diff is far more common because its an inherent weakness as its setup from the factory.
Give Jon a call and pick his brain about it bc he is a wealth of knowledge.
Give Jon a call and pick his brain about it bc he is a wealth of knowledge.
The front diff from the factory is a helical style. It is not "upgradeable" to make it lock more. Even switching to a fancy $$ Quaife does not make it "lock" more. Just makes it handle more HP's before going KABOOM.
The only way to "upgrade" your front diff in a similar fashion as the rear (make it lock up more) is to go with a Cusco or Carbonetics clutch pack style diff. You won't even understand how big of difference it is until you try it. That's all I'm going to say. . .
The only way to "upgrade" your front diff in a similar fashion as the rear (make it lock up more) is to go with a Cusco or Carbonetics clutch pack style diff. You won't even understand how big of difference it is until you try it. That's all I'm going to say. . .
^You've gotta be kidding me
I got a Maxxlock in my car a couple of months ago (amazing piece btw) and now you're telling me about the crazy difference the front diff makes. How much of a difference are we talking? This will have to be put on the back burner for me as its probably quite pricey but I am still curious.
I got a Maxxlock in my car a couple of months ago (amazing piece btw) and now you're telling me about the crazy difference the front diff makes. How much of a difference are we talking? This will have to be put on the back burner for me as its probably quite pricey but I am still curious.
whaaa?? for the front diff? last I looked a Cusco 1 way front diff was like.. maybe 1200? I haven't looked at it for a while though
Yeah I had a feeling the cost was a huge barrier to entry. Its not solely the cost of the unit but its also got to be installed into the transfer case. Plus removing the rear diff is a piece of cake and the transfer case not so much...
So in terms of performance, what are the added benefits of the front diff?
So in terms of performance, what are the added benefits of the front diff?
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Yeah I had a feeling the cost was a huge barrier to entry. Its not solely the cost of the unit but its also got to be installed into the transfer case. Plus removing the rear diff is a piece of cake and the transfer case not so much...
So in terms of performance, what are the added benefits of the front diff?
So in terms of performance, what are the added benefits of the front diff?
Lets just say after that last weekend event, all the other tires still have another two weekends in them but that front inside tire has maybe one more weekend and would require rotating to the rear where it gets the least damage.