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S-1 trans into S-5

Discussion in '"Stock" Alpine' started by ceecpa, Jan 7, 2007.

  1. ceecpa

    ceecpa Donation Time

    The tranmission (tranny) in our S-5 needs reworking and I have access to a s-1 transmission. I realize that the early tranny is 3-synchro but will it bolt into place and work until I've rebuilt the S-5 tranny?

    Thanks,
    Chuck Edwards
     
  2. Wombat

    Wombat Donation Time

    Chuck

    Can't give you a definite yes or no to this one, but sounds like you will be pulling the transmission from the SV anyway so while you have the two on the floor you can check for differences. Things to look for:

    If you have a very late SV (B395017309 or later), the transmission will have 25 spline input and output shafts. The Series I has smaller 10 spline shafts so wont fit unless you change the driveshaft and clutch as well.

    The Series V has a very different clutch to the Series I. You will probably need to swap the clutch lever from the SV onto the SI gearbox (and possibly the bell housing as well).

    Check the position of the mounting holes in the bell housing, particularly the four at the bottom where the stay brackets from the engine bolt. Don't know about the SV, but on the Arrow range with the 1725, the spacing these are different to my SIV.

    There are also some differences where the driveshaft yoke slips in, but I am not precisely sure what they are.

    Good Luck
     

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