Need a favor, RE: driveshaft length

Discussion in 'Modifications And Maintenance' started by Chux, Nov 29, 2009.

  1. Chux
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    Chux Well-Known Member

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    just compared, and the EJ VLSD tailhousing is definitely longer than the EA locker housing. so in order to run the VLSD, I'll have to use a shorter driveshaft....I'd rather not have mine modified....but before I drop some cash on a junkyard driveshaft, I'd like to have an idea of whether it would work.

    so....EJ, 5MT driveshaft. I need the length of just the front section, from the end of the slip yoke, to the flange behind the carrier bearing. also, a measurement from somewhere on the bearing/bracket to one end would be great.
     
  2. Deride
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    Deride Well-Known Member

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    I have a wrx one laying in the garage if you want to borrow it and compare.
     
  3. Deride
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    Deride Well-Known Member

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  4. Chux
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    Chux Well-Known Member

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    hmmm....hard to tell from that pic. looks like a CV-type, so no flange in the middle.


    found some measurements in the FSMs. looks like all 5MT front driveshafts (EA and EJ) are about 25", +/- ~1/2". measured from the center of the u-joints. So even if I could put the EA82 bracket on an EJ shaft, it probably wouldn't solve the problem.


    some other numbers. from tip of the slip yoke to the flange, an EA82 PT4WD 5MT driveshaft is 28.5". the AWD tailhousing, from where the center case meets the tranny case to the end of the output is 14.25". the RX FT4WD housing is 11.5".

    so I need to add about 2.75" to my driveshaft to make this work......awesome.
     
  5. Deride
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    Deride Well-Known Member

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    you can borrow it and measure away if you want... its just sitting in the garage.
     
  6. idget
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    idget Want to pokéman? PM ShortytheFirefighter

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    :ugh: tmi

    lolumad?
     
  7. Chux
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    Chux Well-Known Member

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    sorry, I had it backwards. my shaft is too long :cool:
     
  8. turbo_turtle
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    turbo_turtle Well-Known Member

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    EJ 4EATs and 6MTs are shorter!

    ~Dan
     
  9. Grayguy
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    Grayguy Well-Known Member

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    Why don't you just lengthen yours?
     
  10. Chux
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    Chux Well-Known Member

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    yea, I keep thinking that mine will be too short.....so I had ruled that out. but that's right. Thanks for reminding me.

    although. taking a number of measurements. it looks like the Ea82 driveshaft will be about 2.25-2.75" too long with the EJ tailhousing. my '02 FSM shows that an '02, u-joint style, AT shaft is about 2.3" shorter. but for some reason, my '99 legacy FSM shows it as being 2.3" LONGER (24.9" v 27.2").....wtf?

    had the driveshaft in my wagon lengthened. was not cheap. would rather use something of the already-correct size. but if such a thing doesn't exist....than yea, I'll be taking it down to driveline specialists and have them work their magic.




    so yea, a measurement of an EJ 4EAT one would be awesome! preferably an older one.....
     
  11. Chux
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    Chux Well-Known Member

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    DOH. martin reminded me that the AT driveshaft is one piece. so I don't think that will help me either. Anyone know of an EJ 4EAT with a 2-piece driveshaft?
     
  12. Dynapar
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    Dynapar Well-Known Member

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  13. turbo_turtle
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    turbo_turtle Well-Known Member

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    WRX 5MT vs. WRX 4EAT, where the 4EAT was used for a 6MT swap.

    [​IMG]

    [​IMG]

    ~Dan
     
  14. Chux
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    Chux Well-Known Member

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    looks like it uses the larger flange for the center piece too. so I wouldn't be able to use the STi front half with the XT6 rear.
     
  15. Dynapar
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    Dynapar Well-Known Member

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    Chux I left you a VM. I checked out my 4EAT driveshaft today and it is a 2 piece unit. I think it was 57.5-58" long from end to end. Here is a big picture of my 4EAT driveshaft w/ a tape next to it for reference.
     
  16. Chux
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    Chux Well-Known Member

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    yea, got your message, Thanks! I don't think it's quite right. close....but not close enough. I think if someone local had one, I'd try it. but in the interest of getting this car done as quickly as I can.....I'm just going to have my spare modified.