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Push from Detroit Locker Reduced, Why?

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Old Nov 4, 2003 | 09:57 AM
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OBE1 95Z28's Avatar
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Push from Detroit Locker Reduced, Why?

I just swapped my boxed LCAs (with poly ends) for Global West tubular LCAs with a sperial bearing/poly combo. During my test drive the cornering "push" when accelerating felt greatly reduced! Visual inspection of the old poly/poly LCAs didn't show any deteriorization of the poly bushing (i.e. ovalized bushing from cold flow) and there wasn't any clunking associated with the old LCAs. My understanding is the sperial bearing will eliminate binding but I thought that occurred during hard cornering. The locker pushes during gradual turns when accelerating. Could somebody tell me why push was reduced?

Thanks
Old Nov 4, 2003 | 01:42 PM
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BigRich's Avatar
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less flex in the rear susp? why do you like the detroit locker?
Old Nov 4, 2003 | 02:18 PM
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OBE1 95Z28's Avatar
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My car is a cross-trainer...I like drag racing and carving twisties! I've dyno'd 580 rwhp so the stock rear won't take it at the 1/4 mile track.
Old Nov 11, 2003 | 01:38 PM
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Hello from another F-body Detroit Locker person! You must be running a Ford 9", correct? I am running a Dana 44 in the rear in my 3rd gen CMC car and just recently got the locker.

When I first started with the locker I had a very bad push and front end vibration that went along with it. The only change I made to the car was the locker. I found out from other racers I had too much grip in the back and increased tire pressures in back to compensate. That did help some. Turns out a posi set-up car is not right for the increased traction you get from the locker. My tire pressures in back were too low and spring rates too high. I have yet to run on a dry track at high speed to make sure the evil push and vibration is really gone - I put in softer springs for my weekend at Sears Pt and the handling seemed to be much improved in mostly wet conditions.

So, I don't think your LCAs are connected to your reduced push, decreased traction in back is probably what does that. If anything your LCA change should make a better connection between the car and the pavement. How you got to reduced push I don't know, could be a slower track, slower conditions, increased tire pressures? Did you make any other changes from the last time you had the car out at the track?
Old Nov 13, 2003 | 10:35 PM
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OBE1 95Z28's Avatar
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The LCAs were the only thing I changed. Noticed the change in push on the street (not track) through some twisties I have near home (drive them every day so I know how they used to feel). I'll play with the tire pressure and see how that affects it...thanks.
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