My ice race club is thinking about starting an economy class. Stock 4cyl engines. It will allow factory limited slips only. No locked or welded., Open differential only Is there a good way to check for cheaters. Torsens are hard to tell. clutch types usually have some resistance.
pick up both wheels off the ground and give one a turn. Clutch style would have both wheels spinning in the same direction. Open and Quafe will spin in opposite
mad_machine wrote: pick up both wheels off the ground and give one a turn. Clutch style would have both wheels spinning in the same direction. Open and Quafe will spin in opposite
For the clutch type you gotta put the trany in neutral. If in park or in gear it wont spin at all. If my addled brain remembers it correctly that is. I havent had a car with enough power to need an LSD for 10+ years.
With both tires off the ground, have one person hold one wheel and another spin the other (while in neutral). Chances are, if one won't spin independent of the other, it's welded or locked.
Take it out to the car park and do a brake stand. See if there are one or two black marks.
J
that doesn't always work... my friends 00 civic ex with nitrous had an open diff but would burn both... never understood why.
I dont really know if FWD's are any different than rwd's, but I'd agree with what everyone else said. both tires spinning the same is a sign of clutch, viscious, or locked, and tires spinning opposite means helical or open. A gear type diff (helical, whatever) will still spin indenpendant of the other because it never really locks, so I'm not sure if there is any other test for figure those out. Your better bet might be seeing if there is a vin digit that indicates the differential, if youre hunting out a factory diff in a junkyard.
Put the wheels on surfaces with different traction level - sand under one, pavement under the other. Then accelerate hard. A well-balanced car can burn both tires on an open diff if they're on the same surface, but being able to deliver power to both wheels when one is in a low traction situation is basically a definition of what a limited slip does.
The best part is that you need no tools or expertise to do this, nor does it matter what's limiting the slip. Torsens, Quaifes, Detroit Lockers, clutch packs, whatever.
+1, that's your test.
You'll need to log in to post.
