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  • My 90 series OME 882 / 892 lift installation

    My OME springs are installed now. Here are the technical details:

    Front springs: OME 882
    Front shocks: OME N91S
    Rear springs: OME 892X
    Rear shocks: OME N86

    Suspension height before lift (stock):

    Front (left / right / avg): 753 748 750 mm
    Rear (left / right / avg): 750 740 745 mm

    Suspension height after lift:

    Front (left / right / avg): 824 820 822 mm
    Rear (left / right / avg): 820 809 814 mm

    Net amount of suspension lift:

    Front (left / right / avg): 71 73 72 mm
    Rear (left / right / avg): 70 69 70 mm

    All numbers are the average of two measurements, with the vehicle in opposite orientations, on the flattest surface I could find. Vehicle is stock, empty, with full tank of fuel, towbar, 3rd row seats installed, and tyres at 29 psi. This is a 2001 90 series Colorado GX, with the 3.0 D-4D engine. Measurements are from bottom of rim through centre up to edge of wheel arch. I would guess accuracy is something like +/- 2 mm.

    The front is a bit higher than I expected. I had assumed that the 3.0 D-4D engine was something like 90 kg heavier than the regular 3.0 TD. But, the above numbers put this assumption into question. I was particularly alarmed after my first measurement, with only the front installed:

    Front only (left / right / avg): 834 828 831 mm (single measurement only)

    But, the front came down a bit when the rear was lifted. And, after doing some calculations, I think the front will probably be ok, once I install the winch. Here are my back-of-the-envelope calculations:

    CALCULATIONS

    Lfb = Lever effect at front bumper = (268 + 80) / 268 = 1.30
    Lsp = Lever effect at spring (lower A-arm) = 1.85
    Rsp = Spring rate = 500 lbs / inch (according to OME)
    Din = Displacement height at wheel (inches)
    Flbs = Force (net weight) at bumper (lbs)

    After some scribbling, I came up with the formula...

    Flbs = Din x (2 x Rsp) / (Lsp x Lsp x Lfb)

    Which works out to...

    Flbs = Din x 225

    Converting to metric...

    Dmm = Displacement at wheel (mm)
    Fkg = Force at bumper (kg equivalent)
    Fkg = Dmm x 4.0

    In simple English, every 4 kilograms added at the bumper will bring the front suspension down by 1 mm.

    So, I need to add about 80 kg to bring it down to the 2 inch region. Considering that the winch alone will weigh 40 kg, this sounds perfectly doable.

    The rear is a bit lower than I expected. But, presumably that's easy to correct by adding a spacer. Or, I can just remove the third row seats, and see what happens. The spring rate of the 892 is a lot higher than the 891 (400 vs 210 lb/in), so it should be able to handle loads better. The ARB folks said that the 892X had the same spring rate and characteristics as the 892.

    Overall, the suspension feels a lot better than stock. However, the alignment is way out, at the moment.

    Here are the pics!

    Before the suspension lift...



    After suspension lift installed (OME 882 / 892X)...



    Here are the CV joint angles. Is this healthy?





    QUESTIONS

    1. How important is it to bring the front down to the 2 inch mark? If I'm a little bit over, is that ok? I'm considering a hidden winch mount, which would be lighter than full-blown kangaroo armour.

    2. With the front nominally 21 mm too high, how much wear does that put on the CV joints? I've been keeping my speed below 50 mph, for now, and haven't gone on the motorway yet.

    3. When should I get my front-end alignment done? Should I wait until the winch is mounted? And, if I decide to get rims with a slightly different offset, will that affect the alignment? I'll be replacing my tyres too, at some point soon.

    Cheers,
    BlueRock

    2001 Landcruiser 90 (Colorado) D-4D, now lifted!
    2001 LC 90 D-4D (Colorado GX) w/rear locking diff
    - 3" lift: OME 882/892X (55/70 mm) + 32" BFG AT KO's
    - Winch: Warn Tabor 9k; hidden mount (K-4 Design)
    - Diff drop; diff breathers; dual Optima batteries (YT D31A)

  • #2
    Hi!

    You may have read my post (further down) on what coil springs/shocks I should buy for my Prado KZJ95 with a 1KZTE diesel engine.

    I have to decide between OME rear coils/shocks (more expensive in Sri Lanka) VS King Springs (KTRR-59) and Rancho (RS5000 or RS9000) shocks.

    I note that you have fitted OME. Is there any particular reason for this?

    Will be very grateful for your views - Ekendra
    Ekendra (4S7EF)
    1997 Prado 1KZte/KZJ95W

    Comment


    • #3
      Hi Ekendra,

      I chose OME because they are generally considered a safe bet and I managed to find a dealer who had them in stock. I wanted the heavy duty ones in the rear. Beyond that, I don't know much about the differences in quality.

      Note that the OME 892X are dual-rate springs. When mounted, it looks like the upper coils are close to binding. I haven't yet tested these under heavy load. The N86 shocks are about 1.5 inches longer than stock.

      BlueRock
      2001 LC 90 D-4D (Colorado GX) w/rear locking diff
      - 3" lift: OME 882/892X (55/70 mm) + 32" BFG AT KO's
      - Winch: Warn Tabor 9k; hidden mount (K-4 Design)
      - Diff drop; diff breathers; dual Optima batteries (YT D31A)

      Comment


      • #4
        Hi Bluerock,
        I think you are right in being concerned with the front height and CV angle.
        Have you measured your droop at the front ? as I suspect you will have very little down travel as it is at the moment.
        Simply jack (under the cross member is ideal) the front up till the wheels are off the ground and then measure as you have done from bottom of rim to wheel arch and compare that to your current ride height.

        Lee
        02 VX, Toyota Alloy Bar, IPF 900XS with 50 watt HID, 50 mm Lift- Lovell Shocks n Springs, Safari Snorkel, large Pioneer tray, Pioneer In-dash, Alpine roof mount DVD screen -handled the Simpson and Innaminka roads, now with a little TRD blower & Unichip

        Comment


        • #5
          Thank you for this information.

          My problem is that the OME stockist will only import after I place the order (a wait of about 8 to 10 weeks) while the King stockist have the items in stock!!

          Regards - Ekendra
          Ekendra (4S7EF)
          1997 Prado 1KZte/KZJ95W

          Comment


          • #6
            Wow that's some lift, but the cv angles I'm not sure about...might be cause for some concern?

            I'm using Kings spring currently with Monroe 4x4 shocks. Kings KTRR59 for the rear and KTFR58 for the front. However the front springs are for the petrol model, so my front sits lower than the rear. I've bought the HD springs for the front KTFR58HD which are yet to be fitted. There are a few 90 diesel series owners in the form who already use this combo.

            Can't fault the Kings though as they are cheaper over her in Oz and are suitable for how I use the car, which is mainly for family drives and the occassional weekend warrior offroad jaunts.

            Comment


            • #7
              Thank you Vivioman,

              I was hoping for a response like yours.

              I will also use my vehicle mainly on good roads with the occasional off-road trip (probably about thrice a year) to our national parks where the roads are not that bad but can get pretty boggy during the rainy periods. Some have sandy stretches too.

              Thank you also for the information about HD springs for the front - KTFR58HD. My vehicle is a diesel with a 1KZ-TE engine.

              King springs are about 35% lower in cost as compared to OME and the main benefit is that the dealer is prepared to loan me a set of rear springs that I can fit and use and then decide.

              I am happy with your verdict. Greatly appreciated.

              Regards - Ekendra
              Ekendra (4S7EF)
              1997 Prado 1KZte/KZJ95W

              Comment


              • #8
                Hi Bluerock. I would be shitting if my C.V's had an angle like that! Keep spares on hand mate - you will need them. Your boots won't like that angle much either. Is your camber angle fairly awful? My KZJ95R prado looked damn rediculous when Dobies supplied the wrong front springs. I ended up fitting V6 fronts in the end. Good luck mate.
                2005 100 Series Landcruiser. 4.2 T/D 5 speed auto. LTD c/w AHC/Leather etc.

                Comment


                • #9
                  So, I re-measured the height after a week, to see if there was any sagging. Guess what? The front went up even higher! Yikes! How could that be? The back is sagging a bit, but not by enough to raise the front 1.5 cm!

                  What's going on? Might this have something to do with excessive camber? Yes, it's pretty awful, right now. But, I want to get the major items sorted before I go in for an alignment.

                  Front (left / right / avg): 839 / 835 / 837
                  Rear (left / right / avg): 812 / 810 / 811

                  The front has gone up an additional 15 mm. Back is sagging by 3 mm.

                  I'm thinking of adding some spacers in the back, to lift that higher. Maybe, that will bring the front down.

                  My winch mount arrived today. It's 21 kg. I'll put it on this weekend to see what happens. Winch hasn't arrived yet.

                  BlueRock
                  2001 LC 90 D-4D (Colorado GX) w/rear locking diff
                  - 3" lift: OME 882/892X (55/70 mm) + 32" BFG AT KO's
                  - Winch: Warn Tabor 9k; hidden mount (K-4 Design)
                  - Diff drop; diff breathers; dual Optima batteries (YT D31A)

                  Comment


                  • #10
                    Originally posted by BlueRock View Post
                    So, I re-measured the height after a week, to see if there was any sagging. Guess what? The front went up even higher! Yikes! How could that be?
                    I figured out what happened...

                    It turns out that, in most of my measurements, I had backed the vehicle up before taking the measurement. But, in the prior measurement, I had driven it forward. Does that make a difference? Quite a bit! Something like 20 mm! I suspect my poor alignment has something to do with it.

                    So, ignore that measurement. Here is a new measurement, making sure I reverse, and this time with the winch mount installed (21 kg, no winch):

                    Front (left / right / avg): 809 / 811 / 810

                    So, the front has gone down by about 1 cm. I'm figuring only about half of that is due to the winch mount. The other half is probably from sagging.

                    At this rate, once the winch is installed I should be right on target! Nevertheless, I've ordered the diff drop.

                    BlueRock
                    2001 LC 90 D-4D (Colorado GX) w/rear locking diff
                    - 3" lift: OME 882/892X (55/70 mm) + 32" BFG AT KO's
                    - Winch: Warn Tabor 9k; hidden mount (K-4 Design)
                    - Diff drop; diff breathers; dual Optima batteries (YT D31A)

                    Comment


                    • #11
                      Winch didn't arrive, this weekend. But, my diff drop kit arrived, all the way from the US. So, I installed that. Afterwards, drove it on the motorway, up to—what's the legal limit—ehm, 70 mph, yeah, that's right.

                      Generally, no problems. However, there is some vibration between 50mph and 60mph under hard acceleration. This is in 3rd gear (auto), although there is also very minor vibration in 4th gear (overdrive). Vibration goes away above this speed or if I let off on the accelerator.

                      I'm assuming this is from the CV joints, and not the U joint on the input shaft, but I can't really tell. I can hear it on the front, but I don't feel it in the steering wheel.

                      I'm hoping the vibration will go away once I install the winch.

                      One odd thing I noticed is that, once the drop bolts are installed, the input shaft casing on the differential presses against the thick foam gasket that sits between the automatic transmission and some kind of housing closer to the engine. It doesn't press too hard, and the gasket is quite soft and spongy. So, I don't think this will be a problem. But, it did surprise me. It might have something to do with it being a D-4D engine.

                      BlueRock
                      2001 LC 90 D-4D (Colorado GX) w/rear locking diff
                      - 3" lift: OME 882/892X (55/70 mm) + 32" BFG AT KO's
                      - Winch: Warn Tabor 9k; hidden mount (K-4 Design)
                      - Diff drop; diff breathers; dual Optima batteries (YT D31A)

                      Comment


                      • #12
                        My lift is basically done. Here are the final numbers:

                        Front (left / right / avg): 808 / 805 / 806
                        Rear (left / right / avg): 820 / 811 / 815

                        Net amount of lift:

                        Front (left / right / avg): 55 / 57 / 56
                        Rear (left / right / avg): 70 / 71 / 70

                        This is after the following weight changes:

                        + 20 kg hidden winch mount
                        + 31 kg winch / solenoid / fairlead
                        - 7 kg inner bumper tube + other bits removed
                        + 21 kg Optima batteries net: (27.5 kg – 17 kg) x 2

                        That adds up to 65 kg added to the front. In the rear, I removed the 3rd row seats (35 kg). So, overall 30 kg has been added to the weight of the vehicle.

                        And, here are the pics...




                        Note that I also added a diff drop to the front (Sonoran Steel) and slightly modified the skid plate. The skid plate has been lowered in the middle by about 1 cm with spacers, to prevent it from touching the diff mounting bolts.

                        Here are the new CV angles:




                        BlueRock
                        2001 LC 90 D-4D (Colorado GX) w/rear locking diff
                        - 3" lift: OME 882/892X (55/70 mm) + 32" BFG AT KO's
                        - Winch: Warn Tabor 9k; hidden mount (K-4 Design)
                        - Diff drop; diff breathers; dual Optima batteries (YT D31A)

                        Comment


                        • #13
                          Ekendra,

                          I've got the front HD springs (KTFR58HD) installed today and updated the post at:

                          http://www.pradopoint.com/showthread...190#post287190

                          Cheers

                          Comment


                          • #14
                            Finally took her off-road...




                            I measured the wheel travel...

                            Front (compressed / extended / total travel): 69 / 89 / 20 cm
                            Rear (compressed / extended / total travel): 67 / 99 / 32 cm

                            Note that these numbers are only approximate. Moreover, the front wheels were turned, so the height is a bit higher than normal.

                            Cheers,
                            BlueRock
                            2001 LC 90 D-4D (Colorado GX) w/rear locking diff
                            - 3" lift: OME 882/892X (55/70 mm) + 32" BFG AT KO's
                            - Winch: Warn Tabor 9k; hidden mount (K-4 Design)
                            - Diff drop; diff breathers; dual Optima batteries (YT D31A)

                            Comment


                            • #15
                              Lots of great info there, thanks Bluerock. I've finally added them to the 90's suspension guide thread.

                              I noticed your front articulation is much higher than mine, mostly due to increased extension. I'm guessing your heavier duty springs are pushing on the CV's more - or perhaps the front diff drop is allowing more extension... hmm.

                              Also, your rear has less articulation than mine, due to less extension. Perhaps there's not enough weight in the rear of your vehicle to compress the heavy duty springs.
                              glen_ep - engineered, 4" lift, 33" 255/85R16, lockers, 4.88 ratios www.pradopoint.com.au/showthread.php?17237 www.youtube.com/user/glenep www.fb.com/groups/ToyotaPrado90

                              Comment

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