Subaru R180 conversion - input flange | The Z Club of Great Britain
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Subaru R180 conversion - input flange

Discussion in 'Drivetrain' started by arcdef, Jun 8, 2021.

  1. arcdef

    arcdef
    Z Club Member

    Hi guys,

    Looking for some advise on swapping the input flange over from my current R180 to the Subaru R180. Have done some searching on here and other forums and found some people saying it must be torqued to spec and pre-load testing and others saying just tighten it up with an impact.

    Am concerned about the latter as don't want to ruin the diff, or am i over thinking it?

    I have removed the Datsun flange fine just don't want to touch the Subaru until i know what needs to be done.

    Any advise appreciated,

    Ash
     
  2. moggy240

    moggy240 INSURANCE VALUATIONS OFFICER Staff Member Moderator

    I just tightened it to what the subaru one is that found on hybridZ, I think it was 86 lb/ft but don't quote me as i am not sure.
    Edit. It's actually 136 lb/ft. See the hybrid thread.
     
    Last edited: Jun 10, 2021
    arcdef likes this.
  3. moggy240

    moggy240 INSURANCE VALUATIONS OFFICER Staff Member Moderator

    arcdef likes this.
  4. jackmau

    jackmau New Forum User

    I bought a new Subaru r180 torsen diff and took both flanges off with impact. The square Datsun 240 flange held nicely in my vise on the new diff. I used loctite and my 1/2 inch torque wrench to tighten to 137 ft/lb. I have driven about 1000 miles so far with it installed and it is preforming beautifully. I was paranoid the whole time installing but it worked out fine.
     
    arcdef and johnymd like this.
  5. arcdef

    arcdef
    Z Club Member

    thanks guys, good idea on the vice to hold it. My mind is eased!

    Just need Post Canada to get my CV axles over the pond now!
     

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