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  1. #1
    Join Date
    Oct 2002
    Location
    cirencester, glos, england.
    Posts
    58

    Unhappy sumo diff carrier

    Had an embarrassing mishap yesterday, on the start line at Prescott hill clime, dropped the clutch, big clunk, home on a breakdown lorry.
    Today discovered the diff. carrier has snapped. Can it be changed without removing the diff, running Sierra mechanicals. I called Pilgrim today and they seem to think it can be but I cannot get it out. Am I missing a trick, it is a bit like a Chinese puzzle.
    Thanks
    Brian

  2. #2
    Join Date
    Mar 2006
    Location
    Location Location is a crap TV program
    Posts
    8,042
    Its not that hard to remove the diff, you would be better off doing that and then you can remove the carrier in my humble!
    I refuse to engage in a battle of wits with an unarmed opponent.


    Rules for buying 'Go Faster' parts:-

    If it's fast and cheap then it's not good.
    If it's cheap and good then it's not fast.
    If it's good and fast then it's not cheap!

  3. #3
    Join Date
    Mar 2009
    Location
    liverpool
    Age
    46
    Posts
    361
    Any pictures of which part of the carrier failed?

  4. #4
    Join Date
    Mar 2006
    Location
    Location Location is a crap TV program
    Posts
    8,042
    Quote Originally Posted by philbrad73 View Post
    Any pictures of which part of the carrier failed?
    It's usually the main cross member that snaps! I like to defend Pilgrim whenever I can but the diff carrier really isn't very good in my opinion, I have made a set of brackets which lock the diff up so that it's solid. (Not the ones that are shown on the sumo wiki, they weren't all that good), I have also replaced the rear support with one that I made which is solid.
    There is a little more noise from the diff but not much because I spent along time getting the propshaft angles the same at the gearbox and the diff, I actually ended up lifting the engine up about 5mm at the front and dropping it about 5mm at the gearbox support. The 'nose' of the diff needed lowering quite a bit too. I think from memory both angles are about 2.5 degrees now.
    I refuse to engage in a battle of wits with an unarmed opponent.


    Rules for buying 'Go Faster' parts:-

    If it's fast and cheap then it's not good.
    If it's cheap and good then it's not fast.
    If it's good and fast then it's not cheap!

  5. #5
    Join Date
    Oct 2002
    Location
    cirencester, glos, england.
    Posts
    58
    how do I add a picture? diff. out, managed to shear two of the four bolts that retain the hub. hoping to drill out.

  6. #6
    Join Date
    Oct 2002
    Location
    cirencester, glos, england.
    Posts
    58

    Trying to attrach a picture!

    http://www.cobraclub.com/forum/image...stion_icon.gif

    A first for my IT skills. Let me know if the picture appears.
    Thanks,
    Brian
    Attached Images Attached Images

  7. #7
    Join Date
    Mar 2006
    Location
    Location Location is a crap TV program
    Posts
    8,042
    The picture did appear! In my humble if you want to give your car some welly then its no good just replacing the diff carrier, you need to lock the diff in place so that it can not swing up and down as the power is applied. Pilgrim now use thicker metal for the cross member but that is not getting to the root of the problem!
    I refuse to engage in a battle of wits with an unarmed opponent.


    Rules for buying 'Go Faster' parts:-

    If it's fast and cheap then it's not good.
    If it's cheap and good then it's not fast.
    If it's good and fast then it's not cheap!

  8. #8
    Join Date
    Nov 2013
    Location
    My Garage
    Posts
    949
    Would it also not be prudent for those of us with Pilgrim Cobra's to reinforce the existing mount?. Im not confident in making a new one so welding on maybe a 1/4 inch plate to the beast would do the job?

  9. #9
    Join Date
    Dec 2008
    Location
    Newcastle upon Tyne
    Posts
    1,857
    Ken,

    The picture below shows how Pilgrim reinforced the diff carrier. As pete has said above extra bracing to stop the nose of the diff from lifting, if you are using an engine giving high torque output, may be necessary / beneficial.

    Hope this helps.

    Ian
    Attached Images Attached Images
    Pilgrim Sumo Mk3; IVA Apr. 2014; RV8 3.9 EFi ; Cosworth T5; Granada Donor
    Phase Two underway - Conversion to Japanese

  10. #10
    Join Date
    Nov 2013
    Location
    My Garage
    Posts
    949
    Quote Originally Posted by Ian C View Post
    Ken,

    The picture below shows how Pilgrim reinforced the diff carrier. As pete has said above extra bracing to stop the nose of the diff from lifting, if you are using an engine giving high torque output, may be necessary / beneficial.

    Hope this helps.

    Ian
    Wow thanks for that Ian. Thats noted down for the Winter Overhaul.

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