Outer Limits 4x4 Board

Hi,

My 'new' 105 (only 2,000 KM) has a Turbo (which I need to tune) & 33" A/T

After reviewing carefully the relevant posts in the forum, I was thinking about REDUCING the ratio to somewhere around 4.1 - to improving the cruising and to add ARB lockers

Thoughts ? or recommendations ? I did not see anyone doing 4.11 on the 105

Cheers,

I think because most people try to lower their ratios, not the other way around... (im guessing yours would be 4.3 now, and you want 4.11?)

Cant lockers be fitted to any ratio?

By 4.11 i assume you mean from a 70 series? 100 series turbos came out with 4.10

yep

I want to go the other way most people do .....

currently - 4.3 and want to move to 4.1 or 3.9 - did anyone did it before ?

did anyone tried to change the HI ratio in the transfer or the 5th gear ratio - taking it down from 0.88 to around 0.7-0.75 ?

yes, you can go to 4.1 or 3.9, as these ratios are available in the turbo 70 and the 5 speed auto turbo 100. The ring and pinion in the IFS fits the front rfs diff...when the chev 6.5 turbo is installed in these aussie trucks, they put 3.9 ratios in them
Andrew

what about chanign the ratio of the transfer (HI) ?

though it may sound like your engine is reving and doing nothing it is actually fighting the wind
I also realise that the turbo ( not factory i gather)will give you more torque to push along thru the air and up inclines
you probably will not get any or much gain but will have to cog swap more often and lose some of the crawl ability
the factory turbo motors have a lot more power and torque than a 1hz with after market turbo
having the taller gears will also load up your already fragile gearbox that with a turbo added will be hurting even more

i would just put 33's on it not worry about changing the ratios

i run 529's in mine they are a bit low with 35's but my engine can rev a bit higher

have not heard of diferent hi range gearing for 105's with the r series box

disco4x4 wrote:what about chanign the ratio of the transfer (HI) ?

no gears are available for changing high range. best just to put slightly bigger tyres on.