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    Default Is taller really better!

    Have been toiling with the idea of getting bigger tires for my 62 series Land Cruiser which currently is all stock and has 31X10.5X15 ATs with 3B under the hood...purpose is to enhance the rig's offroad capability, mine is not a daily workhorse and is only sparingly used for weekend offroading...

    I am leaning towards 33X10.5X15 MTs but for that I am sure I'll have to get some sort of a lift which puts me into getting advice from all the experts on this forum. Should I go for a body lift, should I go for a Spring Over Axle (SOA) conversion or is there any other simpler way...

    So here are the questions:

    1. Is taller really better as far as negotiating the dreaded mud pits etc
    2. If yes than what would be the simplest way to achieve it for using 33X10.5X15 MTs
    3. Would 3B loose enough grut to sustain the new planned shoes for my rig
    4. Would I have to re-gear my rig for optimal performance in the new setup etc. etc. etc.

    From the little reading that I have done, it seems that body lift is probably easier since one only has to get taller spacers (if thats what they are called) installed at all the 12 body to chasis mounting points and much cheaper than SOA...

    Looking forward to the valuable input of all the experts!

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    KW- Seems that we are in the same boat as i am also searching for 33s.

    Though I guess you just have to change your leaf spring shackles to gain height along with over sized shocks & thats it.

    For rest of your queries, I will also wait for the guru's to respond.
    <<<The Obstacle Is The Path>>>
    1984 BJ41, 1967 FJ40, 1984 BJ61 , 1983 Mutt M825, 1982 CJ5, 1942 Willys

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    I don't think you don't need much of a lift to fit 33x10.5x15 tires on a BJ60/62, a simple re-arching of the leaf springs with longer shackles at the most would do the trick. Your suspension might end up being a bit stiffer but that should not be too much of a problem if its not a daily driver.

    Ideally however, one should get new lift springs from a decent manufacturer (Rancho, ARB, EMU etc) for the specific vehicle if you can afford it. An SOA has too many complications (though adds a lot more articulation) and body lift is not really needed in this case.

    The 3B should handle the 33s with stock gears (assuming 4.1 ratios for the BJ62) and you should not need to re-gear short of 35s! Goodluck!

    BTW, where are you getting these tires from as its a rare size around here.
    "If YOU don't believe in what you're doing it'll never work."

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    SOA is not at all required. People around the world use 33's on totally stock 60's, with no body lift even. Leaf spring shackles can be replaced with a bit longer ones but that too again depends on your personal choice.

    As far as the performance and fuel efficiency of 3B is concerned, it will be helpful if you let me know the following.

    1. Do u have a 4 fwd or 5 fwd gear?
    2. What diffs are u running? 9:37 or 10:37?
    3. What type of off roading u intend doing?

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    Quote Originally Posted by machine View Post
    KW- Seems that we are in the same boat as i am also searching for 33s.

    Though I guess you just have to change your leaf spring shackles to gain height along with over sized shocks & thats it.

    For rest of your queries, I will also wait for the guru's to respond.

    @machine...bro, we better rock the boat, cuz i guess 33s would be a killer find!


    Quote Originally Posted by SuhaibKiani View Post
    I don't think you don't need much of a lift to fit 33x10.5x15 tires on a BJ60/62, a simple re-arching of the leaf springs with longer shackles at the most would do the trick. Your suspension might end up being a bit stiffer but that should not be too much of a problem if its not a daily driver.

    Ideally however, one should get new lift springs from a decent manufacturer (Rancho, ARB, EMU etc) for the specific vehicle if you can afford it. An SOA has too many complications (though adds a lot more articulation) and body lift is not really needed in this case.

    The 3B should handle the 33s with stock gears (assuming 4.1 ratios for the BJ62) and you should not need to re-gear short of 35s! Goodluck!

    BTW, where are you getting these tires from as its a rare size around here.
    @SK..thankyou sir for ur expert opinion, haven't got any clue yet as to where to get them from..keeping my fingers crossed and turning on the search mode since it seems that longer shackles would do the trick..


    Quote Originally Posted by noman8ff View Post
    SOA is not at all required. People around the world use 33's on totally stock 60's, with no body lift even. Leaf spring shackles can be replaced with a bit longer ones but that too again depends on your personal choice.

    As far as the performance and fuel efficiency of 3B is concerned, it will be helpful if you let me know the following.

    1. Do u have a 4 fwd or 5 fwd gear?
    2. What diffs are u running? 9:37 or 10:37?
    3. What type of off roading u intend doing?
    @noman8ff..thanks for your advice sir...
    1. Have a 4 fwd
    2. running 10:37
    3. nothing too extreme, just the regular joe thingy...mud and all..
    Whatever moves you...is good enough...Pakistan Zindabad!!!
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    Quote Originally Posted by noman8ff View Post
    SOA is not at all required. People around the world use 33's on totally stock 60's, with no body lift even. Leaf spring shackles can be replaced with a bit longer ones but that too again depends on your personal choice.

    As far as the performance and fuel efficiency of 3B is concerned, it will be helpful if you let me know the following.

    1. Do u have a 4 fwd or 5 fwd gear?
    2. What diffs are u running? 9:37 or 10:37?
    3. What type of off roading u intend doing?
    Pardon me upon my ignorance sir - please let me know how you know diff type that either its 9:37 or 10:37?

    I am running on 5fwd gear wth 13BT - Would this set up also support serious offroading with 33s?
    <<<The Obstacle Is The Path>>>
    1984 BJ41, 1967 FJ40, 1984 BJ61 , 1983 Mutt M825, 1982 CJ5, 1942 Willys

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    Quote Originally Posted by machine View Post
    Pardon me upon my ignorance sir - please let me know how you know diff type that either its 9:37 or 10:37?

    I am running on 5fwd gear wth 13BT - Would this set up also support serious offroading with 33s?

    Hmm..sir, I got to know it the hard way, heh, the ustad gee working on differential told me by physical inspection, by way of Ring Gear Teeth Count / Pinion Gear Teeth, but following is something that came up in the seach..might be useful to you..


    Gear Ratio & Tire Size Chart


    Good "rule of thumb" calculation is to mutiply .12 by your tire diameter. (.12 X 38" = 4.56)
    (see more formulas at bottom of page)
    The below table can be used to get a rough idea on gear ratios. The colors represent ideal RPM's at highway speeds (65). For highway cruising and best fuel economy stay towards the yellow (2600 rpm), around town daily driving is color coded green (2800 rpm), and for better towing power or just more 4-low power use the ratios near the red (3100 rpm). These calculations are assuming a manual transmission with a 1:1 ratio. If you drive an automatic your RPMs will be slightly higher, and the opposite is true if you have overdrive (your RPMs will be slightly lower).

    <TABLE class=maintext border=1 cellSpacing=0 cellPadding=0 align=center><TBODY><TR><TD bgColor=yellow align=middle>Better Gas Mileage </TD><TD bgColor=lime align=middle>Near Factory Ratio </TD><TD bgColor=red align=middle>More Power </TD></TR></TBODY></TABLE>
    <TABLE class=maintext border=0 align=center><TBODY><TR><TD></TD><TD align=middle>Gear Ratio</TD></TR><TR><TD vAlign=center align=middle>T
    i
    r
    e


    D
    i
    a
    m
    e
    t
    e
    r


    </TD><TD><TABLE class=maintext border=1 bgColor=silver align=center VALIGN="CENTER"><TBODY><TR bgColor=aqua><TD></TD><TD></TD><TD>3.31</TD><TD>3.42</TD><TD>3.55</TD><TD>3.73</TD><TD>3.91</TD><TD>4.11</TD><TD>4.27</TD><TD>4.56</TD><TD>4.88</TD><TD>5.13</TD><TD>5.29</TD><TD>5.38</TD><TD>5.71</TD><TD>6.17</TD><TD>7.17</TD></TR><TR></TR><TR><TD bgColor=aqua>27"</TD><TD></TD><TD bgColor=yellow>2677</TD><TD>2766</TD><TD bgColor=lime>2872</TD><TD>3017</TD><TD bgColor=red>3163</TD><TD>3325</TD><TD>3454</TD><TD>3689</TD><TD>3947</TD><TD>4150</TD><TD>4279</TD><TD>4352</TD><TD>4619</TD><TD>4991</TD><TD>5800</TD></TR><TR><TD bgColor=aqua>28"</TD><TD></TD><TD>2582</TD><TD bgColor=yellow>2668</TD><TD>2769</TD><TD bgColor=lime>2909</TD><TD>3050</TD><TD bgColor=red>3206</TD><TD>3331</TD><TD>3557</TD><TD>3806</TD><TD>4001</TD><TD>4126</TD><TD>4196</TD><TD>4454</TD><TD>4813</TD><TD>5593</TD></TR><TR><TD bgColor=aqua>29"</TD><TD></TD><TD>2493</TD><TD>2576</TD><TD bgColor=yellow>2674</TD><TD>2809</TD><TD bgColor=lime>2945</TD><TD>3095</TD><TD bgColor=red>3216</TD><TD>3434</TD><TD>3675</TD><TD>3863</TD><TD>3984</TD><TD>4052</TD><TD>4300</TD><TD>4647</TD><TD>5400</TD></TR><TR><TD bgColor=aqua>30"</TD><TD></TD><TD>2410</TD><TD>2490</TD><TD bgColor=yellow>2584</TD><TD>2715</TD><TD bgColor=lime>2846</TD><TD>2992</TD><TD bgColor=red>3109</TD><TD>3320</TD><TD>3553</TD><TD>3735</TD><TD>3851</TD><TD>3917</TD><TD>4157</TD><TD>4492</TD><TD>5220</TD></TR><TR><TD bgColor=aqua>31"</TD><TD></TD><TD>2332</TD><TD>2409</TD><TD>2501</TD><TD bgColor=yellow>2628</TD><TD>2755</TD><TD bgColor=lime>2896</TD><TD>3008</TD><TD bgColor=red>3213</TD><TD>3838</TD><TD>3614</TD><TD>3727</TD><TD>3790</TD><TD>4023</TD><TD>4347</TD><TD>5051</TD></TR><TR><TD bgColor=aqua>32"</TD><TD></TD><TD>2259</TD><TD>2334</TD><TD>2423</TD><TD bgColor=yellow>2546</TD><TD>2696</TD><TD bgColor=lime>2805</TD><TD>2914</TD><TD bgColor=red>3112</TD><TD>3331</TD><TD>3501</TD><TD>3610</TD><TD>3672</TD><TD>3897</TD><TD>4211</TD><TD>4894</TD></TR><TR><TD bgColor=aqua>33"</TD><TD></TD><TD>2191</TD><TD>2263</TD><TD>2349</TD><TD>2469</TD><TD bgColor=yellow>2588</TD><TD>2720</TD><TD bgColor=lime>2826</TD><TD>3018</TD><TD bgColor=red>3230</TD><TD>3395</TD><TD>3501</TD><TD>3561</TD><TD>3779</TD><TD>4093</TD><TD>4745</TD></TR><TR><TD bgColor=aqua>34"</TD><TD></TD><TD>2126</TD><TD>2197</TD><TD>2280</TD><TD>2396</TD><TD>2512</TD><TD bgColor=yellow>2640</TD><TD>2743</TD><TD bgColor=lime>2929</TD><TD>3135</TD><TD bgColor=red>3295</TD><TD>3398</TD><TD>3456</TD><TD>3668</TD><TD>3963</TD><TD>4606</TD></TR><TR><TD bgColor=aqua>35"</TD><TD></TD><TD>2065</TD><TD>2134</TD><TD>2215</TD><TD>2328</TD><TD>2440</TD><TD bgColor=yellow>2565</TD><TD>2664</TD><TD bgColor=lime>2845</TD><TD>3045</TD><TD bgColor=red>3201</TD><TD>3301</TD><TD>3357</TD><TD>3563</TD><TD>3850</TD><TD>4474</TD></TR><TR><TD bgColor=aqua>36"</TD><TD></TD><TD>2008</TD><TD>2075</TD><TD>2154</TD><TD>2263</TD><TD>2372</TD><TD>2493</TD><TD bgColor=yellow>2590</TD><TD>2766</TD><TD bgColor=lime>2961</TD><TD>3112</TD><TD bgColor=red>3209</TD><TD>3264</TD><TD>3464</TD><TD>3743</TD><TD>4350</TD></TR><TR><TD bgColor=aqua>37"</TD><TD></TD><TD>1954</TD><TD>2019</TD><TD>2095</TD><TD>2203</TD><TD>2308</TD><TD>2426</TD><TD bgColor=yellow>2520</TD><TD>2692</TD><TD bgColor=lime>2881</TD><TD>3028</TD><TD bgColor=red>3123</TD><TD>3176</TD><TD>3370</TD><TD>3642</TD><TD>4243</TD></TR><TR><TD bgColor=aqua>38"</TD><TD></TD><TD>1902</TD><TD>1966</TD><TD>2040</TD><TD>2144</TD><TD>2247</TD><TD>2362</TD><TD>2454</TD><TD bgColor=yellow>2621</TD><TD>2805</TD><TD bgColor=lime>2948</TD><TD>3040</TD><TD bgColor=red>3092</TD><TD>3282</TD><TD>3546</TD><TD>4121</TD></TR><TR><TD bgColor=aqua>39"</TD><TD></TD><TD>1854</TD><TD>1915</TD><TD>1988</TD><TD>2089</TD><TD>2190</TD><TD>2302</TD><TD>2391</TD><TD bgColor=yellow>2554</TD><TD>2733</TD><TD bgColor=lime>2873</TD><TD>2962</TD><TD bgColor=red>3013</TD><TD>3198</TD><TD>3455</TD><TD>4015</TD></TR><TR><TD bgColor=aqua>40"</TD><TD></TD><TD>1807</TD><TD>1867</TD><TD>1938</TD><TD>2037</TD><TD>2135</TD><TD>2244</TD><TD>2331</TD><TD>2490</TD><TD bgColor=yellow>2664</TD><TD>2801</TD><TD bgColor=lime>2888</TD><TD>2937</TD><TD bgColor=red>3118</TD><TD>3369</TD><TD>3915</TD></TR><TR><TD bgColor=aqua>41"</TD><TD></TD><TD>1763</TD><TD>1822</TD><TD>1891</TD><TD>1987</TD><TD>2083</TD><TD>2189</TD><TD>2275</TD><TD>2429</TD><TD bgColor=yellow>2599</TD><TD>2733</TD><TD bgColor=lime>2818</TD><TD>2866</TD><TD bgColor=red>3042</TD><TD>3287</TD><TD>3819</TD></TR><TR><TD bgColor=aqua>42"</TD><TD></TD><TD>1721</TD><TD>1778</TD><TD>1846</TD><TD>1940</TD><TD>2033</TD><TD>2137</TD><TD>2220</TD><TD>2371</TD><TD>2538</TD><TD bgColor=yellow>2668</TD><TD>2751</TD><TD bgColor=lime>2798</TD><TD>2969</TD><TD bgColor=red>3208</TD><TD>3728</TD></TR><TR><TD bgColor=aqua>43"</TD><TD></TD><TD>1681</TD><TD>1737</TD><TD>1803</TD><TD>1894</TD><TD>1986</TD><TD>2087</TD><TD>2169</TD><TD>2316</TD><TD>2479</TD><TD bgColor=yellow>2606</TD><TD>2687</TD><TD bgColor=lime>2733</TD><TD>2900</TD><TD bgColor=red>3134</TD><TD>3642</TD></TR><TR><TD bgColor=aqua>44"</TD><TD></TD><TD>1643</TD><TD>1698</TD><TD>1762</TD><TD>1851</TD><TD>1941</TD><TD>2040</TD><TD>2119</TD><TD>2263</TD><TD>2422</TD><TD>2546</TD><TD bgColor=yellow>2626</TD><TD>2670</TD><TD bgColor=lime>2834</TD><TD>3063</TD><TD bgColor=red>3559</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
    Common gear formulas:
    Gear Ratio
    Is taller really better! - gearratio formula
    Crawl Ratio
    Is taller really better! - gearratiocrawl formula
    P-Metric to Inch Diameter
    Is taller really better! - gearmetric formula
    Tire Change (find new gear ratio)
    Is taller really better! - geartire formula
    Speedometer Adjuster (with oversize tires)
    (New Tire Diameter / Old Tire Diameter) * Speedometer MPH = Actual MPH Simple Gear Ratio Formula
    Ring Gear Teeth Count / Pinion Gear Teeth = Gear Ratio
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  8. #8
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    Quote Originally Posted by KWB25 View Post
    @machine...bro, we better rock the boat, cuz i guess 33s would be a killer find!




    @SK..thankyou sir for ur expert opinion, haven't got any clue yet as to where to get them from..keeping my fingers crossed and turning on the search mode since it seems that longer shackles would do the trick..




    @noman8ff..thanks for your advice sir...
    1. Have a 4 fwd
    2. running 10:37
    3. nothing too extreme, just the regular joe thingy...mud and all..
    @ KWB25
    So here is what my learning and experience says.

    If the diff's are 9:37 than u need a 5 fwd gear as 9:37 are low ratio diffs. If it's 10:37 (as in your case) than a 4fwd gear works pretty well (especially if u have a non turbo 3b which is not famous for top speed).

    The combination of 10:37 (top speed diff) and 5fwd gear (required for too much of top speed) is only recommended for 12HT engines and not for 3B's. So u have an excellent combination.

    Now coming over to 33's. I think it will be a killing combination with the existing setup. The top speed will slightly be effected but fuel efficiency and offroading capability both in terms of height and low end power will increase.

    In my recommendation you can have the bigger shackles and if you get good quality uplift foundations than can go for the body lift also.

    @ machine
    Brother an opened differencial tells you if it's a 9:37 or 10:37. 10:37 is comparatively a top speed diff. And a 13BT is the better turbo version of 3B. Same cc with better horse power.

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    @noman8ff..thankyou sir for your detailed advise..
    Whatever moves you...is good enough...Pakistan Zindabad!!!
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    @KW - Bro if you find 33s and bigger shackles in lahore, please let me know too as here in Multan I am yet unable to find'em.
    <<<The Obstacle Is The Path>>>
    1984 BJ41, 1967 FJ40, 1984 BJ61 , 1983 Mutt M825, 1982 CJ5, 1942 Willys

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