504/5 diff identification
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  1. #1
    Fellow Frogger! Janek's Avatar
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    May 2004
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    Default 504/5 diff identification

    i just purchased a diff, the seller claiming it to be a LSD, either 3.9 ratio or a 4.36 ratio.

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    any easy way of checking?its in pieces atm, so numbers of the innards is no problemo

    -Janek

  2. #2
    Fellow Frogger! Jason Morris's Avatar
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    Default

    Hi, have a look in through the four holes on the crownwheel carrier - if you see coil springs it's a LSD. Also, you could check the numbers stamped on the housing as detailed in attachments to this post...

    505/504 diff interchangeability

    Mine's still in bit's as of this weekend, two more shims to make!!
    Jason

  3. #3
    Gone Fishin' Ray Bell's Avatar
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    Originally posted by Janek
    .....any easy way of checking? It's in pieces atm, so numbers of the innards is no problemo
    If it's in pieces, you count the teeth and divide the number of pinion teeth into the crownwheel number...

    Or you read the numbers off the front of the pinion shaft (9 x 37 etc).

  4. #4
    Fellow Frogger! 505 to the max's Avatar
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    Default Diffs

    Pardon my ineptitude, but is an LSD actually stronger than a conventional diff, or just more suitable to gaining traction when putting power down?

  5. #5
    Gone Fishin' Ray Bell's Avatar
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    Whether it's stronger or not depends on its construction...

    But principally its benefits are related to better traction.

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