[Lear35A]

My car has the M030 option, but no <acronym title='Limited Slip Differential'>LSD</acronym> numbers are on the option list. That's always been disappointing, but it was what it was.



However, being of the juvinile mind and having 315 ft.lbs. of flywheel torque with my shiny D1R Stage 3 SC, I just had to see what happened when I launched the car drag strip style.



The picture below shows the outcome.



Any fans of My Cousin Vinny will instantly say, "hey, that car's got a limited slip. Has to."



Is it possible? Could Porsche have put an <acronym title='Limited Slip Differential'>LSD</acronym> in a car without noting it in the option code list? How else can I check this without burning up the rest of my rear tires?



Curious.

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[Rap]

Porsche registry with Jeff Coe. Just give him your vin

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[Lear35A]

[quote name='Rap' timestamp='1363474142' post='140136']

Porsche registry with Jeff Coe. Just give him your vin

[/quote]

Not sure how this helps. I know what options that Porsche says they put in this car and <acronym title='Limited Slip Differential'>LSD</acronym> isn't one of them.

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[94'968]

i have launched a lot of cars with out <acronym title='Limited Slip Differential'>LSD</acronym>'s with this same out come. i guess as long as you get both wheels spinning at the same time, they will stay spinning together and leave the marks like you have in your picture.

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[JWahlsten]

Put the wheels on two different friction surfaces and it will give a much different picture if you don't have <acronym title='Limited Slip Differential'>LSD</acronym>.

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[KRAG50]

Maybe a previous owner added a limited slip! I just purchased a used transmission from a recovery yard, told no <acronym title='Limited Slip Differential'>LSD</acronym> and paid a lower price, low and behold when the Tranny arrived and I was getting ready to install a <acronym title='Limited Slip Differential'>LSD</acronym> unit I purchased, It already had one installed.( Guards)

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[DaveN]

Not an expert here but isn't there a simple test by jacking up the car and spinning one wheel? If the opposing wheel goes the opposite direction there is no <acronym title='Limited Slip Differential'>LSD</acronym>? I'm jealous of anyone with <acronym title='Limited Slip Differential'>LSD</acronym> (except that one time in the 70's <img src="/forum/images/smilies/968/blink.png" class="smilie" alt="" /> ) Maybe there will be a half price sale next year Krag50 as you stuck with a crappy, new Guards <acronym title='Limited Slip Differential'>LSD</acronym> unit, tee hee.

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[flash]

no. that does not always work. a torsen diff, or a guards, will spin them backwards. that test really only works with clutch diffs.



as for lear's car, i agree, the previous guy may have done it.



something to consider though, is that the porsche database is full of errors, and there are a number of options in a number of cars that does not show up on the stickers or paperwork. this is because you could have ordered a car with whatever you want, and it may have been done when the car got off the boat, or at the dealership. this may or may not have resulted in the correct paperwork. you would be surprised at how incomplete that database is. i've found a couple dozen anomalies myself, and i almost bought a car that is not supposed to exist.

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[tamathumper]

You should have bought it and called it "Schrodinger's Car".



<img src="/forum/images/smilies/968/icon_lol1.gif" class="smilie" alt="" />

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[flash]

lol - i get that

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[Cloud9...68]

<acronym title='Limited Slip Differential'>LSD</acronym>'s are complicated devices that can be hard to interpret. When I was trying to sell my car, a prospective buyer did a <acronym title='pre purchase inspection'>PPI</acronym> at a respected Porsche independent in town, and they concluded that the car's <acronym title='Limited Slip Differential'>LSD</acronym> was "weak", possibly due to worn clutches. I believe they spun one of the wheels when it was on the lift, and were able to stop the spinning of the opposite wheel with light hand pressure. The previous owner installed a Guard (singular, not Guards) <acronym title='Limited Slip Differential'>LSD</acronym>, which doesn't use clutches. So, it was behaving exactly how it should.



I would spend some time googling tests to determine if you have an <acronym title='Limited Slip Differential'>LSD</acronym> (I'm sure there are different tests for the different types), and try them out. Seems to be a topic somewhat shrouded in mystery, no doubt due to the poor general understanding of the subject.

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