I'm not sure, but I think my restored opel's back brakes need some adjustments ...
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Thread: I'm not sure, but I think my restored opel's back brakes need some adjustments ...

  1. #1
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    I'm not sure, but I think my restored opel's back brakes need some adjustments ...

    Yes, this is my first opel ... and I may not know how the brakes should look, but I think I have a issue ... or two. See pics
    Attached Images Attached Images

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    Member guyopel's Avatar
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    You need to replace both wheel cylinders and replace rear drums .HTH
    John
    Guyopel
    I have not failed - I've merely found 10,000 ways that won't work."
    ---Thomas Edison
    It's amazing what God lets man get away with when lightning is so cheap. Mark Twain

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    The interesting part was that the wheel cylinders are so messed up that they do not leak fluid.

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    I'm guessing that the drum will be hard to find locally and that there is no easy replacement. I guess I'll be internet shopping.

  7. #5
    New/Old Owner 1973 GT JimVonBaden's Avatar
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    Amazing! My 20 year sitting "Barn Find" is in much better shape than that!

    Left-Rear-Brake..jpg

    Jim

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    Opeler
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    Hey, at least the shoes are good. Get a little crazy with the BFH on that drum? They can be hard to remove sometimes. Next time try striking on the face with a dead blow or heavy rubber mallet. If it were me I would fill the chipped areas with weld and take it down to the local Napa where they would put it on the lathe and make it good as new. The drum looks like it "was" in pretty good shape.

  9. #7
    UFOpel Investigator Site Supporter Aardvaark (R.I.P.)'s Avatar
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    I wonder what surprises await his other "restored" Opel buyers.

    He must have meant that the cars were stored somewhere, removed from storage and
    then put back in storage again. Before he put them on fleebay. You just miss understood what he
    meant in his auction description by "re-stored".
    -Mark
    '75 Manta
    Having invested my life savings into
    this Opel Manta. I expect big returns.😅
    Link to my album of Opel catalogs
    and magazine articles:
    https://www.opelgt.com/photopost/show...ser/23031/sl/a

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    Thumbs up

    Quote Originally Posted by Aardvaark View Post
    I wonder what surprises await his other "restored" Opel buyers.

    He must have meant that the cars were stored somewhere, removed from storage and
    then put back in storage again. Before he put them on fleebay. You just miss understood what he
    meant in his auction description by "re-stored".
    Now that is a good one. This baby sure does look to have been "re-stored" more than once.

    My Condolences to the O.P. However, I will say I admire your tenacity. Just keep at it and you will get it sorted out eventually.

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    The drum was already tweecked before I got to it ... I was assuming that the factory used weight reduction to lowered the wheel inertia and helped the car go faster and save gas ...

  12. #10
    Opeler
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    Bleed those rear brake lines completely multiple times to remove all crud before you connect them to the new brake wheel cylinders.

    After looking at your photos, I suggest you drain and replace all the fluids on that car including the rear axle, transmission, engine oil and coolent, and brake fluid. Also clean and repack your front wheel bearings. Opel GT's are fun to drive on the freeway and you will want all those lubricants fresh.

    You may need to have your fuel tank inspected and cleaned to remove crud and rust given it looks like this car was not driven for a long time.

  13. #11
    Project 1450 supporter... Site Supporter RallyBob's Avatar
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    Looks like a typical car that never had the brake fluid changed in its' lifetime.:banghead:
    My Flickr photos.
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  14. #12
    No....its not a Buick.... yellaopelgt's Avatar
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    Bleed those rear brake lines completely multiple times to remove all crud before you connect them to the new brake wheel cylinders


    I'd go one step further and suggest just to just go ahead and replace all the rubber brake hose's as well if they look as bad as the rest of the system. Probly easier to do it in one shot anyway. Bet your bottom dollar one of them is collapsed...
    What ...we got here...is........failure......................... to communicate....
    Some men,you just cant reach...so you get what we had here last week...which is the way he wants it.
    Well, he gets it...I dont like it, any more than you men...


  15. #13
    UFOpel Investigator Site Supporter Aardvaark (R.I.P.)'s Avatar
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    Quote Originally Posted by RallyBob View Post
    Looks like a typical car that never had the brake fluid changed in its' lifetime.:banghead:
    Sure is the worst one I've ever seen.
    -Mark
    '75 Manta
    Having invested my life savings into
    this Opel Manta. I expect big returns.😅
    Link to my album of Opel catalogs
    and magazine articles:
    https://www.opelgt.com/photopost/show...ser/23031/sl/a

  16. #14
    Detritus Maximus opelbits's Avatar
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    I would say go here:

    http://www.rockauto.com/catalog/x,make,OPEL,vtype,US

    You may have to search the Manta listings to find all the parts. For some reason, even though the parts are the same, Rock Auto is not consistent in their listings. Drums and wheel cylinders are listed for the Manta, but no drums for the GT, but it's the same part. Also, when you see several different suppliers listed for a part, don't automatically assume the cheapest will cost less. They have several warehouses and the cheapest part may be in the warehouse farthest from you. You could save $5 on the part but pay twice as much in shipping.

    A pair of drums (Centric brand) comes to about $160 total with shipping. The wheels cylinders were $14.90 each (Dorman) and $38 total with shipping for two. The 74 Manta listing shows the Centric wheel cylinders ($12 each) and the 71 GT does not.

    I prefer going to OGTS, but if price is a priority and you have the patience to sort thru listings and shipping, Rockauto can be very helpful.
    "No, it's not fiberglass."
    "No, the motor is not in the back."
    "No, your friend in high school did not 'peg' his speedometer."

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