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Thread: DIY: Lowering Springs - RS*R Down kit

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    DIY: Lowering Springs - RS*R Down kit

    DIY Lowering springs

    DHL deliveries are great. For about $355 after shipping and duties, I finally have some drop springs from RHD Japan. https://www.rhdjapan.com/ I debated between Eibach, H&R, and RS*R for a while. I pulled the trigger on the RS*R Down kit, mainly for the 35mm even drop front and rear. In hindsight, I would have gone with the N009D from RS*R for the firmer front spring rate. An excellent list of available kits can be found on n15sk4 's post here: https://micra-forum.com/showthread.p...-for-k13-micra

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    Tools required:
    • Jack stands
    • Jack stands
    • Jack (scissor or other)
    • Coil spring compressor (rent from CT or pick up at Princess Auto for about $30 when on sale)
    • Bench vise (not essential)
    • 6mm hex wrench or socket
    • 21mm x 2
    • 18mm
    • 16mm (5/8 is the same)
    • Flat head screwdriver/small prybar



    FRONT

    Starting with the front, break the torque on your front wheels nuts, then jack and support the car at the two jack points with stands. Remove the front wheels and pop the hood.

    Remove the sway bay link (16mm or 5/8)You'll notice how these are very light and hollow, I'm looking forward to some upgraded aftermarket replacements, or maybe I'll grab some heim joints and see what I can come up with for my next DIY:

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    Then remove the brake line. Use your pry bar to slide the “U” clip out, and pull the brake line free of the bracket. The ABS line simply pops straight up and out of it's bracket.

    Next remove the 2x 21mm nuts from the lower strut bolts, leave the bolts for now until you get the top strut nut off:

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    Now remove the top nut. Hold the strut rod with the 6mm hex, and remove the 18mm nut. Once this is done, you can then remove the lower bolts and guide the strut assembly out (be cognizant of the positioning of your wheel hub at this point. Too much flopping around can be bad for your ball joints and CV joints) Collect the upper strut bushing:

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    With both struts removed, it is time to remove the springs. This is where a bench vise comes in handy. If you happen to have the strut clamp special tool available from the OEM or SnapOn, great. If not, just clamp the sway bar tab in the vise:

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    Now install your spring compressor. Compress the spring enough so that ALL tension on the top hat is relieved. I won't get into safety on this one, but tighten the two sides evenly, slowly and not all one side at once:

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    Use your 6mm hex again, and break free the 18mm top hat locking nut and remove the top hat and boot assembly, then remove the spring and scarefully decompress the spring and remove the compressor:

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    If your strut is showing as much rust where the spring contacts the spring seat as mine did, it's a good time to touch it up with some rust paint.

    Grab your new spring and install it on to the strut. Depending on the height difference of your new spring compared to the factory spring, and whether or not you are using drop struts, you may or may not need to use the compressor. The RS*R's did not need to be compressed:

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    Ensure the spring is in it's proper location on the seat then reinstall the top hat and boot, and torque the locking nut:

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    Reinstall the strut on the car in the reverse order. Make sure to reconnect the brake line and ABS line in their respective locations.

    After double checking all lines and that everything is torqued, put your wheels back on and lower the front end.

    Cont'd


    Last edited by NotASportsCar; 04-20-2019 at 09:10 PM.

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  3. #2
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    REAR

    Jack up the rear of the car by the jacking/tow hoop under the rear bumper. Support with stands then position your jack in the middle of the rear suspension beam (use a block off wood or hockey puck to prevent damage). The jack will be used to relieve pressure from the lower shock bolt. Also to keep your springs from expanding too far too quickly when the shock bolts are removed. BEWARE when lowering the jack to remove the springs that you DO NOT want to allow the full weight of the rear suspension to hang freely. This will cause a lot of stress on your rubber brakes lines.

    Remove 18mm rear shock bolts:

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    Lower the jack enough to pull out the springs, and collect the upper spring isolators.

    Shown here is the difference in height of the two springs:

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    Place the upper spring isolator on the new spring ensuring it is seated correctly (both rear springs are the same):

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    Install the spring in the lower spring seat, ensuring the lower spring isolator is positioned correctly:

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    Once the springs are seated, slowly raise the jack until you can line up the lower shock bolts and reinstall them. You can then reposition your jack to the jacking point, and lower the car. Make sure the upper isolator lands properly on it's locating bump. You may need to reach in and assist it:

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    End state (I hate myself for not having before picture):

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    Finally, hit the twisties and enjoy a much better handling Micra... just watch out for the potholes.

    Cheers,
    Drew

  4. The Following 4 Users Say Thank You to NotASportsCar For This Useful Post:

    Azmodon (04-15-2019),Daox (04-16-2019),MetroMPG (04-16-2019),Nobuseri (04-16-2019)

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    Thanks for posting this. You've re-invigorated me to look into lowering mine again. I found 2 suppliers in the GTA relatively close to me so I've emailed them to see what they have in stock and prices etc. for the Tanabe TNF174 or the Eibach E10-63-023-02-22.
    I replaced the springs on my 03 Nissan Maxima with a set of Eibach lowering springs about 5 years ago and I was very happy with them and the procedure looks very similar.

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    Administrator Daox's Avatar
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    Very nice write up. Thanks!

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    Thanks for the detailed DIY!

    Will add to the Micra modifications, customizations & DIY list .

        __________________________________________

        click to view fuel log View my fuel log 2015 Micra S manual: 5.0 L/100 km ... 56.5 mpg (Imp) ... 20.0 km/L ... 47.0 mpg (US) ...


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    Junior Member VE3BRJ's Avatar
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    Thank you for providing so much detail and your source for parts!!


        __________________________________________

        click to view fuel log View my fuel log 2016 Micra SR manual: 9.7 L/100 km ... 29.1 mpg (Imp) ... 10.3 km/L ... 24.2 mpg (US) ...


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