R25 AR4 gearbox
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Thread: R25 AR4 gearbox

  1. #1
    Fellow Frogger! deja vu 25's Avatar
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    Default R25 AR4 gearbox

    The gearbox has been rebuilt and finally in the r25
    Still a lot to do before start up, such as sensors, extra mounts, exhaust bits and pieces etc. Thanks to Haakon for assisting with a doner box. I used mostly new parts. The main issue seems to be the E1 clutch. The bands were in reasonable condition. Hoping i got the torque converter home properly before mounting!!

    The scary thing will be starting and attempting the first drive!
    Via the aussiefrogs App

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    Attached Thumbnails Attached Thumbnails R25 AR4 gearbox-1373361408164.jpg   R25 AR4 gearbox-1373361450877.jpg   R25 AR4 gearbox-1373361474829.jpg   R25 AR4 gearbox-1373361487730.jpg  
    Last edited by deja vu 25; 9th July 2013 at 08:57 PM.
    Cheers - Luke

    1990 Renault 25 V6 Baccara - Gunmetal Grey
    1974 Renault 17TS (1317) - Silver

  2. #2
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    Looks very good, Luke!
    If you took as much care with the inside i doubt you'll have any problems at all. BTW, how did you get that case so shiny?
    The AR4 has bands?

    "We prefer to believe what we prefer to be true"
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  3. #3
    Too many posts! JohnW's Avatar
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    Very impressive. Best of luck with that start up. Pity you can't bench test the transmission - is there any way?
    JohnW

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    I too am impressed. I like the thought that some one still has an auto R25. I like to try and keep my R15 auto. Old auto Renaults are rare mainly because no one tries to repair autos at home. They believe it is easier to convert them to manual. I have done both and don't believe it is any easier to do the manual conversion. Old autos are reasonably straight forward to work on. Although it is necessary to have a proper workshop manual for them.

  5. #5
    Fellow Frogger! deja vu 25's Avatar
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    Thank you all for your kind words. I completely agree with Sunroof. I attempted a MJ3 auto to UN1 on one of my R25's about 10 years ago and it was not a fun job, as it wasn't really like for like. I would do the auto again. It did help that I had a similar AR4 to pull apart and play with. I got the service pack from a canberra transmission specialist. Was reasonable price as it is common with the VW gearboxes of the 1990's era. Sorry bands = friction plates/clutches? The lingo is not my strong point.
    I did get the torque converter overhauled though. It had to be sent to Melbourne!!! That cost me $450. I do have some other pics on my good camera. When I get some moments I will uploaqd them. I just snapped the shots above with my mobile.

    Oh, the case was easy, just a good pressure clean and then a silver spray job with my compressor Looks a million dollars eh? I just hope the internals are even half that. I guess the only way I can tell that the tranny might work is that I can freely turn the driveshafts and they do spin as they should and there does not seem to be any grating or notchy bits....touch wood.
    I guess it is the fear of the unknown that makes these things seem extremely hard, but once you start and get into it things do not seem as bad.
    Anyway the box is bolted up. I now need to reconnect alll the bits and pieces such as remaining engine mounts, starter motor, sensors, driveshafts, exhaust and so forth.
    I am in the hunt for a supplier of exhaust gaskets - namely the three hole gaskets that fit between the exhaust minifold and the pipe itself...any ideas? Haven't found any ebay sources yet. Are they common with teh Volvo and Pug exhaust minifolds??

    I also plan to do the same kind of finish on the engine including manifolds, hoses, brakes etc when the car is back running. The engine does seem to have a lot of oil leaks, so there will be a few gaskets that do require replacement.
    Then it will be starting on the interior and exterior of the car. A big project, but once I have it registered at least I can enjoy driving it while doing the other things

    It has sort of given me a bug. I have an old JC5 trans from my old RXE Laguna whiche my son and I have started to pull apart. It was completely RS, so will be an interesting build, providing I can get internals. Unfortunately there was a lot of gear crunching and grating and it actually failed to proceed. May be too far gone.

    Thanks again for your positive comments and encouragement.
    Cheers - Luke

    1990 Renault 25 V6 Baccara - Gunmetal Grey
    1974 Renault 17TS (1317) - Silver

  6. #6
    1000+ Posts jo proffi's Avatar
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    Quote Originally Posted by deja vu 25 View Post
    I am in the hunt for a supplier of exhaust gaskets - namely the three hole gaskets that fit between the exhaust minifold and the pipe itself...any ideas? Haven't found any ebay sources yet. Are they common with teh Volvo and Pug exhaust minifolds??
    That sounds familiar, and in my case totaly redundant as I run a full custom setup.

    Can you post a picture of the part and I'll have a look if i have one lying around you can have.

    Jo
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  7. #7
    Fellow Frogger! deja vu 25's Avatar
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    Hi Joe. Yep just happened to have the part here at work. Needs 2 of them. Thanks heaps. If not i will take it to an exhaust specialist and see if they have one.

    Sent from my GT-I9100T using aussiefrogs mobile app
    Attached Thumbnails Attached Thumbnails R25 AR4 gearbox-1373499480388.jpg  
    Cheers - Luke

    1990 Renault 25 V6 Baccara - Gunmetal Grey
    1974 Renault 17TS (1317) - Silver

  8. #8
    1000+ Posts Haakon's Avatar
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    Nice one! Did you get some advice on setting clutch pack tolerances/gaps? I understand they're the big factor in the eventual shift quality, with it being a good idea to set it up a little tighter than specified in the book - JoBo is the source for that from his AD4 builds.

    Now I really do have to remove the finger and get over to see it!!

    One used to be able to buy exhaust gasket paper in a sheet - not sure if its still around? Cut out my own gaskets before using that stuff with success, but that was a while ago...

  9. #9
    1000+ Posts jo proffi's Avatar
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    Quote Originally Posted by deja vu 25 View Post
    Hi Joe. Yep just happened to have the part here at work. Needs 2 of them. Thanks heaps. If not i will take it to an exhaust specialist and see if they have one.

    Sent from my GT-I9100T using aussiefrogs mobile app
    Sorry Luke, I had a look and all mine are either 2 hole or 2 pipe gaskets.

    Looking at the gaskets I run on my car which dont have anything as fancy as metal rings like the OE ones do, I'd say you could get by with one cut out of plain bit of metalised gasket material.



    jo

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    There are companies around that custom make things like, gaskets, and seals. Yellow pages or Google.

  11. #11
    Fellow Frogger! deja vu 25's Avatar
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    Hey Haakon
    Yep had the complete rebuild manual (VW) from JoBO which helped immensely. I pretty much stuck with book recommendations, so will see how it goes.

    Yep, I reckon I could get one made or sourced at an exhaust specialist.
    Cheers - Luke

    1990 Renault 25 V6 Baccara - Gunmetal Grey
    1974 Renault 17TS (1317) - Silver

  12. #12
    Fellow Frogger! deja vu 25's Avatar
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    No probs Jo, appreciate the look.
    Will source one.

    Quote Originally Posted by jo proffi View Post
    Sorry Luke, I had a look and all mine are either 2 hole or 2 pipe gaskets.

    Looking at the gaskets I run on my car which dont have anything as fancy as metal rings like the OE ones do, I'd say you could get by with one cut out of plain bit of metalised gasket material.





    jo
    Cheers - Luke

    1990 Renault 25 V6 Baccara - Gunmetal Grey
    1974 Renault 17TS (1317) - Silver

  13. #13
    AS1
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    So how did it go?

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    Moderator vivid's Avatar
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    Quote Originally Posted by AS1 View Post
    So how did it go?
    You do realise this is a post from over 15 years ago?
    Just saying.. A part of me wishes I still had the R25v6 auto. Unfortunately just too much rust (UK import).
    Powered by high grade French plutonium.

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    AS1
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    Quote Originally Posted by vivid View Post
    You do realise this is a post from over 15 years ago?
    Just saying.. A part of me wishes I still had the R25v6 auto. Unfortunately just too much rust (UK import).
    Actually 'only' 5 years ago. ;-)
    I don't think there's an expiry date on just asking.
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