Looking for 1.1 AUTO Trans Diff
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Thread: Looking for 1.1 AUTO Trans Diff

  1. #1
    Opeler
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    Looking for 1.1 AUTO Trans Diff

    Hi there- Hoping to find a cheap 4.30 ratio 1.1 differential for the Opile race car. I have a housing so to save on shipping I could just take the pinion and gear carrier. On a tight Lemons budget sadly...

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  3. #2
    Opel Key Master opelspyder's Avatar
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    A Opel 1.1 with Automatic came in 1969-1970, according to parts manuals. The rear differential is the same for all 1.1 Kadetts with Automatic. The only gear ration for a 1.1 is a 4:11. The parts book does not state anything else. I have a NOS ring gear set for a 1.1 if that helps
    Check out our Opel restorations at
    www.newvintageauto.com

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    NOS 4,375:1 gears, https://www.matz-autoteile.de/www/in...mart&Itemid=69
    Otherwise look for used ones at the German ebay.

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    Opeler
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    Thanks for the information. I'll search German ebay and see if I can get a gear set cheap. The new parts are tempting but would end up being nearly $500 shipped.

    I also notice they mention a 1.1 LOCKING diff. I wonder if any of those exist?

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    Never heard of a locker for the ohv axle, but there was a ZF clutch type LSD available. Today almost as rare as hens teeth, just like the 4,62:1 gears.

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    Opeler
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    An LSD would be a big help for this car! Any thoughts on where to look for one? I'm sure they cost a fortune.

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    Quote Originally Posted by avendler View Post
    An LSD would be a big help for this car! Any thoughts on where to look for one? I'm sure they cost a fortune.
    If I knew I would have bought one myself for our Vauxhall Chevette. Jokes aside, German, Dutch or UK ebay comes to mind, but they are rare so it can take a long time for one to pop up. Then there is the problem with rebuilding as I believe the parts are not interchangeable with the CIH axle. It is probably easier and cheaper to use an axle from a 1,9 Rallye or GT and swap in 4,22:1 or 4,30:1 gears. A -71 and up non C-clip axle too, because of the availability of LSD's is much greater for it than the C-clip axle. The 4,22:1 or 4,30:1 gears are not cheap though, and neither are the LSD's. The gears were used in Ascona/Manta B's with the 13S engine . Or the 4,22:1 gears from an Opel Rekord can be used, but the pinion must be modified because it's a bit shorter than the pinion from a torque tube model. Rekords with the 4,22:1 gears were built in large numbers so the gears are more common and cheaper than the Ascona/Manta B 13S ones.

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