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Thread: Smooth case transmission help please

Discuss the Austin Healey Sprite and the MG Midget. Two different but similar cars sometimes referred to collectively as the Spridget.

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    Obi Wan
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    Smooth case transmission help please

    I know my second gear/synchro at the very least will have to be replaced in my bugeye at some point. One of my strategies is to rebuild another smooth case transmission that Bill gave me so that I do not have down time. I know it will take some time to locate the parts I need. I have never rebuilt or inspected a transmission before and need some information.

    1)How do you know if a transmission is close ratio or not?
    2)How can you tell if a part is worn and needs to be replaced without having a new one to compare it to?
    3)Would it be worth it to take it in some where and just ask them what needs to be replaced?
    4)Besides the second gear/synchro, what else is typically replaced in a rebuild?

    Kevin

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    Yoda
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    Re: Smooth case transmission help please

    Answer- use a ribbox, don't use a smoothcase for anything except show!
    Sorry
    BillM
    '69 Sprite Mk IV
    '60 MGA
    '65 Midget

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    Jedi Knight bugedd's Avatar
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    Re: Smooth case transmission help please

    I agree, I just took my smoothie to the metal recycling .

    here ya go.
    https://www.ebay.com/itm/AUSTIN-HEALEY-BU...b#ht_500wt_1054
    1960 Bugeye AN5L43788, 1275, Datsun 5 speed, bunches of fun goodies.

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    Yoda Trevor Jessie's Avatar
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    Re: Smooth case transmission help please

    _____________________
    1970/2 MG Midget
    Datsun 5-speed
    Future Fuel Injection Turbo Project
    _________________
    1958/9 Sprite AN5L/1499
    1275 SuperCharged
    Datsun 5-speed
    _________________

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    Obi Wan Sarastro's Avatar
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    Re: Smooth case transmission help please

    I have two smooth-case transmissions, which are free to anyone who wants them. I'll list them on Craigslist, and if no takers, they're off to the recycling depot.

    I don't have first-hand info, but I have heard that they are difficult to rebuild. Lack of parts, and some things require machining. The ribcase transmissions are far superior, and you can get a good one for not a lot of money. It seems like the logical thing to do.
    Steve Maas
    1966 Triumph TR4A, undergoing restoration: http://www.nonlintec.com/tr4a
    1952 MG TD, restoration completed 2014, sold 2016: http://www.nonlintec.com/mgtd
    1960 Austin-Healey "Bugeye" Sprite, sold 2010: http://www.nonlintec.com/sprite
    1967 Porsche 912: http://www.nonlintec.com/porsche

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    Re: Smooth case transmission help please

    Steve, I may be interested in one of those smooth case transmissions.

    Thought I read some place that rib case internals could be fit into the smooth case. Anyone know if and how this is done?
    Patrick Owens
    www.OopsClunkThud.com

    AN5L 32382

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    Great Pumpkin jlaird's Avatar
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    Re: Smooth case transmission help please

    Pat, what a neat tag, OopsClunkThud. Got to love it.

    Yes rib case bits will go in a smooth case. How, no clue. Why? Use a ribcase.

    Miss Agatha is going to have a ribcase sometime this fall. Unless you are going Concourse why not? Not too many judges even that have a clue.
    Jack Laird
    Retired USAF

    Miss Agatha. On the road again and smiling at her new Calif. home.
    Fourteen shows, Eleven firsts and counting we hope.

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    Re: Smooth case transmission help please

    I'm not sure why I'd want the smooth case, even if it's only the case. I never seem to be able to leave anything stock so it's not a concourse thing. But, If it's possible to have the aesthetic of the smooth case with the parts availability of the rib case, then why not.
    Patrick Owens
    www.OopsClunkThud.com

    AN5L 32382

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    Re: Smooth case transmission help please

    I've read about the rib case gear into a smooth somewhere (Can't for the life of me remember where) but I rememeber it involving some machining of the casing on the internals...
    http://Sebringsprite.blogspot.com
    'Completed' 1960 'Sebring' Sprite, UK.

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    Re: Smooth case transmission help please

    I just had my smooth case rebuilt and 1275(ribcase) gearset added by Quantum Mechanics in Oxford, CT. I'm sorry I can't answer your questions, but John did tell me that there is a slight bit of machine work to be done in order for it to work.

    I did it to maintain the original look for possible concours judging while also getting reliability and readily available parts.

    personally, I think just giong the ribcase route is a better and cheaper idea.

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    Jedi Knight smaceng's Avatar
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    Re: Smooth case transmission help please

    If it is ok, could I get the cost, seano?
    Drop me a PM if you would like. Quantum Mechanics comes highly recommended!
    Scott in CA
    1973 TR6

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    Jedi Hopeful Brian_James's Avatar
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    Re: Smooth case transmission help please

    I put ribcase internals in a smooth case about 25 years ago, but can't recall the specifics. As I recall, it was not very involved. That is what is running in my car right now (when I can find time to drive it).

    Brian

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