Results 1 to 3 of 3
  1. #1
    Join Date
    Jun 2007
    Location
    Gillitts Durban
    Age
    54
    Posts
    190
    Thanked: 58

    Default Puma 110 SW Defender Coil change to 130 HCPU Coils

    For those of you that’s interested to change your 110 Defender SW – Puma coil springs to something more firmer and at reasonable price, here is the process I followed:
    When I bought my Defender new in April 2010, I measured the fender arch to ground distance and recorded the values. I was from the beginning a bit annoyed with the spring rates and in my mind I thought the Defender SW spring rate is too soft for my liking. Yes, it’s designed as a personnel carrier, but I needed the defender for overland trips. During my first trip to Moremi, I confirmed my suspicion due to the occasional front axle bottoming out in bumpy sections, obviously due to the equipment weight.
    Months later I have also noticed that the Landy is not standing straight in terms of left to right and the nose appeared to be hanging slightly. My initial measurement also changes by approx. 15 to 25mm all-round.
    My first step was to confirm the as-is setup in the Landy and actual ratings – see below table. Apart from the Landy part no lists, I did found it difficult to compare aftermarket spring rates with the original. The suppliers of OME, TJM and Ironman could not supply me at the time with rating tables, it’s merely categorized as medium and heavy duty. This was not good enough for me, I technically needed to evaluate existing to the proposed in term of actual lengths and spring ratings.
    Standard 110 Defender SW - Puma

    Axle


    Part No.


    Color Code


    Rate–lb/inch


    Length-inch


    Measurement-Arch to Ground

    Front-Driver

    NRC 8045


    Yellow/Yellow


    155


    14.49


    860mm

    Front- Pass.

    NRC 8045


    Yellow/Yellow


    155


    14.49


    875mm

    Rear-Driver

    NRC 7000


    Green/White


    180


    15.75


    910mm

    Rear-Pass.

    NRC 7000


    Green/White


    180


    15.75


    900mm



    I have decided that I will change the front and back coils to 130 HCPU coils-see rating data below. I did not install the additional back inner coil helper spring. As you can see, the original spec. calls for different coil lengths between the Driver and Passenger side to overcome driver weight and drive train weight distribution differences due to physical location.
    Standard 130 Double Cab HCPU – Note: Excluding Rear Inner Helper Springs RRC3266

    Axle


    Part No.


    Color Code


    Rate–lb/inch


    Length-inch

    Front-Driver

    NRC 9448


    Blue/Red


    225


    15.31

    Front- Pass.

    NRC 9449


    Yellow/White


    225


    14.80

    Rear-Driver

    NRC 6389


    Red/Red


    330


    16.02

    Rear-Pass.

    NRC 6904


    Red /Green


    330


    15.55



    After installation, I found that the rear passenger coil has got a difference of 25mm compared to the rear driver side, which was only suppose to be 15mm. I then changed the rear passenger coil to the same part no., length and rating as the Rear Driver side – see below table (Final solution) I still kept the two front coils at different lengths, but the final front measurements only differ by 3mm.
    Final Solution for my 110 Defender SW - Puma

    Axle


    Part No.


    Color Code


    Rate–lb/inch


    Length-inch


    Measurement-Arch to Ground

    Front-Driver

    NRC 9448


    Blue/Red


    225


    15.31


    914mm

    Front- Pass.

    NRC 9449


    Yellow/White


    225


    14.80


    911mm

    Rear-Driver

    NRC 6389


    Red/Red


    330


    16.02


    917mm

    Rear-Pass.

    NRC 6389


    Red/Red


    330


    16.02


    916mm



    The final outcome proved to be a firmer ride, more solid feeling and less sway. The back measurements only increased by an average of 12mm (half inch) and the front by an average of 36mm (inch and a half). The appearance of the Landy is very much normal and does not look over the top when compared to some aftermarket suspension’s. I am using 265/75/16 BFG KM2 Mud Terrain tyres and no rubbing at all during articulation. The cost of R 400 / rear coil and R300 / front coil is in my opinion reasonable – Total cost = R 1400 for 4 off coils. I procured the coils from Landy Parts for Africa in Pinetown Durban.

    1997 Land Rover Defender 90 CSW TDI
    2010 Land Rover Defender 110 CSW Puma
    2009 Land Rover Defender 130 D/Cab Puma

  2. #2
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    38
    Posts
    2,685
    Thanked: 20

    Default

    I read that combination of 130 coils and standard LR shocks gives the best absorbing/firmnes combo. Thanks for the info
    Sold Land Rover 110 Tdi Hard top.
    Crank driven compressor http://www.4x4community.co.za/forum/...ad.php?t=42059

    Sold: 2000 Discovery2 V8 Auto

    Current: 2005 Subaru Outback 3.0R: Mommy wagon, strapped to a rocket. What a car!

    Orra call sign B226

  3. #3
    Join Date
    Jan 2009
    Location
    Town
    Age
    50
    Posts
    423
    Thanked: 0

    Default

    Got 130 springs with bilstien shocks in my defender best thing I ever did.


    Defender 110 s/w 3.9 V8 SU
    Rangie 4.4 V8i

    SWAMBO - Defender 90 V8 with no V8 waiting for the 4.6

    Kaloosa Guess-A-Gen

Similar Threads

  1. Part catalogs & other useful info
    By charlatan in forum Jeep
    Replies: 93
    Last Post: 2020/06/01, 01:02 PM
  2. Coil springs change?
    By DSG in forum Toyota
    Replies: 5
    Last Post: 2010/09/02, 06:04 PM
  3. Replies: 6
    Last Post: 2009/11/20, 11:03 PM
  4. Diff between 110 coils and Disco 1 coils
    By Disco8 in forum Land Rover
    Replies: 1
    Last Post: 2009/03/01, 08:39 PM
  5. Reborn Defender - still rugged, but gone upmarket
    By rssFeedMonster in forum Land Rover
    Replies: 29
    Last Post: 2008/07/23, 09:39 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •