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Thread: 4x100 Lug Conversion (with Rear Disc Brakes)

  1. #1
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    4x100 Lug Conversion (with Rear Disc Brakes)

    So we have all come to know that the 1st Gen Accords come with the absurd lug pattern of 4x120. Which basically gives us no options for aftermarket wheels. In this thread, I will explain (with much help from John Turk) how to convert a US model 1981 Honda Accord over to 4x100 including a parts list. Not only will the parts I’m about to list give you 4x100, but it will also be ridding the front of “captured rotors”. For those of who who do not know what captured rotors are, they are wheel hub OVER rotor. Basically meaning that if you ever need to replace your rotors, you have to get new wheel bearing as well.

    (I will be including the part numbers I ordered from RockAuto Parts Catalog)

    The Fronts

    * 1982 Honda Accord 1.8L Front Hub Repair Kit #718504 — $25.34 each. req. (2)
    * 1986 Honda Accord 2.0L Calipers #333637 — $45.79
    * 1989 Honda CRX 1.6L SOHC Rotors #PRT1424 — $14.97 each. req (2)
    * 2-4 washers to place behind the caliper mounting bolts

    1981 Accord Knuckle and Hub Assembly



    1982 Accord Knuckle and Hub Assembly



    Look at the 1981 Accord assembly and you will notice that the hub is in front of the rotor. Not the most convenient setup for replacing rotors.

    Basically, disassemble the entire front brake system all the way down to the knuckles. Relatively easy to do. Front there, take the ’82 Accord hubs and press them into the knuckles. Make sure that the racer is fully seated into the hub and there is not gap. Also make sure to fully and properly pack the wheel bearings. From there, slip on the ’89 CRX rotors. Once the rotors are on, slide the ’86 Accord calipers on with 1-2 washers behind each caliper bracket bolt for proper spacing on the rotor. It’s also not a bad idea to replace the front brake lines while you have all of it off, but that’s your choice.




    The Rear

    The rear is the slightly more tricky of the two. Although all the parts will come from a 2nd Gen Prelude DX or Si. I got all my parts from the DX.



    * 85 Prelude 2.0L Rear Rotors #0832147 — $17.41 each. req (2)
    * 85 Prelude 2.0L Calipers #4054502 & #4054501 — $44.89 each. req (2)
    * 85 Prelude 2.0L Inner Wheel Bearings #0513848 — $5.69 each. req (2)
    * 85 Prelude 2.0L Outer Wheel Bearings #0513844 — $6.20 each. req (2)
    * 85 Prelude 2.0L Wheel Seal #0523328 — $1.86 each. req (2)
    * 85 Prelude 2.0L Brake Hoses #BH38279 — $7.03 each. req (2)

    * 2nd Gen Prelude Caliper Mounting Bracket. I sourced mine of a prelude in a junkyard for it is about the only way to find one. I recommend that if you are going to do the entire swap. You find the part FIRST before anything.

    * New cotter pins if you choose. and (8) wheel studs which I got from a autocrats house for $1.50 a piece.


    So break the rear drums down all the way to the spindle. Once you have it completely broke down, you will notice that the Prelude caliper mounting bracket bolts straight to the spindle.



    From there, place the wheel studs and bearings into the rear rotors. Now, according to John Turks post, you should be placing a washer on the wheel bearing to space it away from the spindle. I, however, did not do so. And there for, I have not included it in the parts list. It may work for others and it may not but keep it mind that you MAY have to. But install the rear rotors onto your spindles. This part can be a little tricky due to the placement of the lower caliper bolt being so close to the lower control arm. But once you try the swap you will understand the process. you can simply stick a 14mm wrench in between to tighten the bolt once you have it started.



    So whats left you ask? The e-brake cable. As you can see the e-brake cable will not work on the Prelude’s caliper so I followed John Turk’s advice and cut the bracket off the drum completely as shown here.



    From there, I simply welded it to the Prelude’s e-brake assembly. (picture below)



    And BOOM. e-brake cable done.

    So all in all guys, my total for this full 4x100 lug conversion with rear disc brakes and bigger rotors on the front wound up costing me somewhere between $300-350 + shipping costs. And I am very happy with how it came out. And now you have the capabilities of buying any 4x100 wheel you want.
    Last edited by babyhonduhdrama; 12-21-2014 at 05:18 PM.



  2. #2
    3Geez Veteran lostforawhile's Avatar
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    Re: 4x100 Lug Conversion (with Rear Disc Brakes)

    great writeup!!

  3. #3
    3Geez Veteran lostforawhile's Avatar
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    Re: 4x100 Lug Conversion (with Rear Disc Brakes)

    someone sticky this in first generation

  4. #4

    Dr_Snooz's Avatar
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    Re: 4x100 Lug Conversion (with Rear Disc Brakes)

    First rate job. Thread is stickied now.
    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 208k miles, MT swap, rear disc swap, nuthin' else

  5. #5
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    Re: 4x100 Lug Conversion (with Rear Disc Brakes)

    WOW. Stickied. I feel great to have this thread stickied

  6. #6
    DX User JSmythe's Avatar
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    Re: 4x100 Lug Conversion (with Rear Disc Brakes)

    Great job Perry. Thanks for the contributions here and on facebook.

  7. #7
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    Re: 4x100 Lug Conversion (with Rear Disc Brakes)

    Quote Originally Posted by JSmythe View Post
    Great job Perry. Thanks for the contributions here and on facebook.
    No problem man. i wanted it to be available for everyone to use.

  8. #8

    Dr_Snooz's Avatar
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    Re: 4x100 Lug Conversion (with Rear Disc Brakes)

    Quote Originally Posted by babyhonduhdrama View Post
    WOW. Stickied. I feel great to have this thread stickied
    You're baller now!
    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 208k miles, MT swap, rear disc swap, nuthin' else

  9. #9
    DX User tof's Avatar
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    Re: 4x100 Lug Conversion (with Rear Disc Brakes)

    Still in Mobile? Still have the Accord? Still active on this site?

    I'm on the Mississippi Gulf Coast. I have a 79 5-speed hatch.

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