maroon92 wrote:I put a trac lok in my Crown Vic, it helped alot.
(finished second in the 2008 Detroit Region rallycross championship)
But you never cleared all of the cones off the south end of the lot with your tailpipe, didja Nancy?
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Nov. 23, 2009 6:41 p.m. John Brown SuperDork
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Nov. 25, 2009 8:35 a.m. Rusnak_322 Reader
wbjones wrote:
Keith wrote:
ok guess I need a quick lesson here.. with all my open dif vehicles if I dump the clutch all I get is a single strip of rubber... in cars w/ LSD there is always 2 strips.... I just never have seen an open dif car lay 2 strips...wbjones wrote:
keep in mind that there is a very easy way to figure out if you have a LSD....
get yourself somewhere where the Man won't see you and lay a patch... if you leave twin tracks it's got the rear end locked up... peg leg.... no LSD...
With IRS and both wheels with the same traction level, that won't necessarily tell you anything. IRS cars don't unload one side the same way that live axle cars do.
But in a 110 RWHP Miata, even dumping the clutch won't get you visual proof.
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Nov. 25, 2009 7:16 p.m. wbjones Reader
Rusnak_322 wrote:
gravel road....wbjones wrote:
Keith wrote:
ok guess I need a quick lesson here.. with all my open dif vehicles if I dump the clutch all I get is a single strip of rubber... in cars w/ LSD there is always 2 strips.... I just never have seen an open dif car lay 2 strips...wbjones wrote:
keep in mind that there is a very easy way to figure out if you have a LSD....
get yourself somewhere where the Man won't see you and lay a patch... if you leave twin tracks it's got the rear end locked up... peg leg.... no LSD...
With IRS and both wheels with the same traction level, that won't necessarily tell you anything. IRS cars don't unload one side the same way that live axle cars do.
But in a 110 RWHP Miata, even dumping the clutch won't get you visual proof.
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Nov. 25, 2009 8:16 p.m. Capt Slow Reader
or just do some donuts
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Nov. 25, 2009 11:29 p.m. Trans_Maro HalfDork
Or jack up the damn car and turn one wheel.
Jeez you guys like doing things the hard way.
Shawn
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Nov. 25, 2009 11:33 p.m. yvangkwheng
BTW, the best way to tell is to simply look for different flanges on each side. 1.6 viscous diffs have different flanges left and right, every other Miata diff (1.6 or 1.8) has symmetrical flanges and there's no external way to identify them. links of london ugg boots
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Nov. 26, 2009 12:40 a.m. PaulY Reader
Trans_Maro wrote:
Or jack up the damn car and turn one wheel.
Jeez you guys like doing things the hard way.
Shawn
That doesn't work with a torsen. It's a torque multiplier, if there is no torque like in a completely unloaded condition, it's like multiplying by 0. In that case it behaves like an open diff and will spin the other axle the opposite direction.
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Nov. 26, 2009 10:58 a.m. ratghia Reader
I could just dump the clutch with the open diff in the GTI see how many I lay then do it again in a month or two when I get my quaife LSD installed.
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Nov. 26, 2009 2:17 p.m. maroon92 SuperDork
the way I have always checked is by finding a paved road with a dirt shoulder. Put one tire in the dirt, and let her fly. If you spray dirt and don't move, you have an open diff. If you spray dirt, chirp tire and move, you have an LSD.
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Nov. 26, 2009 5:16 p.m. HiTempguy Reader
wbjones wrote:
ok guess I need a quick lesson here.. with all my open dif vehicles if I dump the clutch all I get is a single strip of rubber... in cars w/ LSD there is always 2 strips.... I just never have seen an open dif car lay 2 strips...
If both tires have the same amount of grip (or more accurately, depending on how the diff is constructed, the same amount of torque or differing amount of torque is sent to each wheel depending on its level of grip) both tires will spin at the same time. Very rarely in an open diff car can you get continuous both wheels spinning, usually it only happens for a second or two.
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Nov. 26, 2009 5:36 p.m. njansenv Reader
My old Neon ACR almost always spun both wheels when pointed dead straight. (SRT swap)... corners were another matter entirely.
My E30's seem to behave similiarly: two wheels spin when pointed straight on flat pavement, but clearly have open diffs through corners. The M3 very obviously has an LSD through corners with throttle exuberance at corner exit...
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Nov. 26, 2009 5:39 p.m. 93celicaGT2 SuperDork
My MX6 will roast both tires, but it definitely doesn't have an LSD.
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Nov. 26, 2009 6:53 p.m. wbjones Reader
wow, any day you learn something new has not been wasted...
