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Thread: HOW HIGH AND HOW BIG????

  1. #1
    Brad Disco 2 V8 Guest

    HOW HIGH AND HOW BIG????

    Hi guys,

    just a query - i realise this has probably been talked to death over the years but hear goes......

    how much lift can a D2 take before you encounter driveline problems? i currently have a 2" tough dog kit but am looking to go 1" or slightly more using spacers - flex is great, just want the angles a little healthier....

    part 2 - how high do i need to go to run 285/75 r 16 tyres (33") without rubbing or having to cut bodywork (if possible) is there an off the shelf ratio change that will return the speedo (and fuel economy) to somewhere near normal??? as the V8 with the current 265 MTZ's around town is a sluggish guzzler.....

    Thanks

    Brad

  2. #2
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    Hi Brad, after 2" then things start to get a bit more complicated and expensive. You'll also just have to wait and see what happens with vibrations, but if you run the rubber rotoflex in the rear shaft then you'll probably be ok. Likewise, with the shocks and topping/bottoming out, but I'll bet that the front springs will be very marginal with the spacers as they compress almost to solid when at full compression.

    285's can be run with rubbing with a 2" lift, but a 4" lift (not sure about 3") will prevent rubbing. No guard cutting required for that size tyre when fitted to standard 8" rims (they're too wide for standard 7" rims). You will need a bull bar for additional bumper clearance.

    4.11 diff gears will return the gearing back to standard with these tyres. Diff gear changes will not alter the speedo as the speedo senses from the ABS, not the gearbox.

    Speedo correction can be done using a Truspeed speedo correction unit. The only people that sell these in Aus as far as I know is 4x4Intelligence in Melbourne. These units are from Iceland or somewhere unusual like that.

    With regards to economy, I've found the open pattern tyres will sap power and decrease economy. The larger size decreases economy around town and increases economy on the highway. Regearing will make the economy more stable.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~

  3. #3
    Brad Disco 2 V8 Guest
    Cheers Slunnie,

    I've got the donut on the rear tailshaft (i always thought a uni would be better) and the spacers i'm looking at are 30mm so total lift would be slightly over 3". I already have an ARB winch bar fitted (broke the stocker first time out... hahaha)

    do you know what rover had 16x8 rims as standard with the 120 PCD?

    Interesting info about the speedo, good to know, just lucky i use a GPS as a speedo when on runs (mines out by approx 8kph now).

    My main query was if i could fit spacers to my lifted coils and it sounds like it shouldn't pose any problems - do you know if the D1 and D2 coils are the same diameter????

    Thanks

    Brad

  4. #4
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    If you really want, you can get away with 285/75 on standard rims with only getting a bullbar and custom sliders so it doesnt rub on just the 2 inch suspension lift. You can also run them on standard gearing (not 4.11) but your speedo will be roughly 10% out and it will be sluggish if the car is a manual, i think the auto's handle pretty fine. It's not like disco's are sports cars to begin with anyway

    Shamo

  5. #5
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    Quote Originally Posted by Brad Disco 2 V8 View Post
    Cheers Slunnie,

    I've got the donut on the rear tailshaft (i always thought a uni would be better) and the spacers i'm looking at are 30mm so total lift would be slightly over 3". I already have an ARB winch bar fitted (broke the stocker first time out... hahaha)

    do you know what rover had 16x8 rims as standard with the 120 PCD?

    Interesting info about the speedo, good to know, just lucky i use a GPS as a speedo when on runs (mines out by approx 8kph now).

    My main query was if i could fit spacers to my lifted coils and it sounds like it shouldn't pose any problems - do you know if the D1 and D2 coils are the same diameter????

    Thanks

    Brad
    I think some ES spec D2's had 16x8, though I sourced all of mine from the P38 Range Rover. There are other Rover rims that are 120x5PCD but none of them are directly compatible due to stud size and/or centralising spigot diameter or offset.

    I think that fitting the spacers wont be much of a prob, I just don't know how the shocks will cope with the as it throws the lengths out a bit - you'll have to try it and see. The D1/D2 coils are the same diameters, the fronts are just a different end cut on the lower fronts (ie pig tailed, not ground). The other compatible spacer should be the Landcrusier 80/100 fronts.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~

  6. #6
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    Quote Originally Posted by Shamo View Post
    If you really want, you can get away with 285/75 on standard rims with only getting a bullbar and custom sliders so it doesnt rub on just the 2 inch suspension lift. You can also run them on standard gearing (not 4.11) but your speedo will be roughly 10% out and it will be sluggish if the car is a manual, i think the auto's handle pretty fine. It's not like disco's are sports cars to begin with anyway

    Shamo
    Yep i agree, with the plastic sill things removed and a bar fitted you shouldn't have any probs with just a 2'' lift and standard off-set, Matman on here is running the tough dog kit with an ARB bar custome sliders and 285's without any probs at all.

    TIM.

  7. #7
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    Quote Originally Posted by Brad Disco 2 V8 View Post

    do you know what rover had 16x8 rims as standard with the 120 PCD?

    Thanks

    Brad

    My D2a 2004 Classic came std with 8" rims & 255/65 x 16 tyres ... 6 spoke alloys like on the Rangies ... not the std 5 spoke on th earlier Discovery II.

    Pic's here ===>> http://www.aulro.com/afvb/discovery-...ml#post1104885

    Kev..

  8. #8
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    Here are pics of testing that we did a while ago of 285/75-16 MTR's on LandRover rims with a 2" lift. They rubbed lightly before you even go sticking it into ruts and flexing the suspension bushes backwards and forwards. The way we tested it also didn't produce any dynamic forces which further flex the suspension. The areas that I would be concerned about are the rear door trims/seals and the washer bottle area.

    www.slunnie.com - D2 285/75-16 & 2" lift
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~

  9. #9
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    Quote Originally Posted by Slunnie View Post
    Here are pics of testing that we did a while ago of 285/75-16 MTR's on LandRover rims with a 2" lift. They rubbed lightly before you even go sticking it into ruts and flexing the suspension bushes backwards and forwards. The way we tested it also didn't produce any dynamic forces which further flex the suspension. The areas that I would be concerned about are the rear door trims/seals and the washer bottle area.

    www.slunnie.com - D2 285/75-16 & 2" lift
    Hey, That's my car !

    For 285's i also believe that you will need a bit of work to get it to work properly. I'm currently toying with the idea

    Cheers

    George

  10. #10
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    Quote Originally Posted by georgesadlik View Post
    Hey, That's my car !

    For 285's i also believe that you will need a bit of work to get it to work properly. I'm currently toying with the idea

    Cheers

    George
    You'll fit 285's easy peasy shortly.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~

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