Repair Rust Around Wheels: 91 Civic

Discussion in '4th Generation Honda Civic (1988-1991)' started by Farquea, Jan 8, 2017.

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  1. Farquea

    Farquea New Member

    Jan 8, 2017
    My wife acquired a 91 Civic a few months ago from her Nanna with about 120ks on the clock. In general in its pretty good condition, I have a list of few things that we are going to try and sort out if possible but the first one that I'm worried about is the rust along the bottom near the rear wheels.

    Can anyone suggest whats the best thing to do here, smash out all the rust and fill it with something? I'm just worried the rust might go a lot deeper than it appears and before i know it half the car is falling out as i hit it out!

    I've attached some pics.

    Attached Files:

  2. daperez13

    daperez13 Respected

    Dec 18, 2015
    You should definitely inspect the underside of the car and any panel from the inside, where paint most likely did not coat the metal properly. Based on what I've seen and heard, most people cut out that piece of rusted metal and replace it by welding that section back in and then grinding the weld(s) smooth.

    I'm no expert on this matter but based on the pictures, the rust doesn't look too bad. You should be able to sand/grind all that rust off and fill it with bondo/filler.

    Car looks pretty clean otherwise, you should perform any maintenance due. 120K is nothing if that car was maintained properly.
  3. HeX

    HeX Authoritah, respected. Staff Member Registered VIP 5+ Year Member

    Jan 22, 2011
    Space Coast, Florida
    @Farquea , that rust looks to be worse than you think. Grind it all down until there is absolutely no loose rust left, then apply Ospho to convert the iron oxide (rust) into iron phosphate. That should buy you time to figure out if you want to have it properly fixed with new metal or rig it another way.
  4. Mr.Baker

    Mr.Baker Mr. Search Registered VIP 5+ Year Member

    Jul 19, 2011
    Fingerlakes Region, NY
    It's always worse than it looks on this generation.
    This is going to be an expensive fix, to do it right and NOT have it come back.
    Cut out and replace.
    Ep3po likes this.
  5. Ep3po

    Ep3po Respected

    Dec 23, 2016
    Yup like said above. The 4th gen.civic is prone to rust issues especially if you live in the north.i had the same civic as above 91 Dx hatch ( in white too ) I bought it in 2006 it was a Florida car with 65,000 miles and to rust!!! Within 2 years in New England it looked the pics in post above. Once it started it spread like wildfire. I eventually sold the car due to the rust and expense of fixing it properly


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