can you use a 4.11 80 series gear set in a 100 series rear diff ?? as i want to change ratios from 4.3 .
also can you use a 4.3 gearset from a 100 series in a 80 series rear diff .
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100s rear diff
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I'm also interested in know that .. does anyone have info about it ?
I know the 100 series come with 1.37" shaft and 32 splines compared to 1.31" shaft and 30 splines in 80 series ..
Buth both looks like 9.5" ring ..
I know the 100 series come with 1.37" shaft and 32 splines compared to 1.31" shaft and 30 splines in 80 series ..
Buth both looks like 9.5" ring ..
HJ-60 2H-T Intercoled [url=http://4x4panama.com/foros/viewtopic.php?t=2770]Tencha[/url]
HDJ-80 1HD-T Stock so far " Marilu "
Panama
HDJ-80 1HD-T Stock so far " Marilu "
Panama
No...100 series ring has internal threads, 80 series has drilled holes for bolts. Axles are splined different, so alot is diff-erent 
...having said all that....the 100 series comes in 3 ratios...4.3, 4.1 and 3.9 depending on motor gearbox and model...for instance the lexus has 4.3's behind v8 auto, turbo diesel has 4.1's
Now you can put an 80 series diff in a 100 if you use the 100 side gears in it...but i believe the lsd needs modifying for them to fit....and for the effort, your better off buying the turbo diesel diff
...having said all that....the 100 series comes in 3 ratios...4.3, 4.1 and 3.9 depending on motor gearbox and model...for instance the lexus has 4.3's behind v8 auto, turbo diesel has 4.1's
Now you can put an 80 series diff in a 100 if you use the 100 side gears in it...but i believe the lsd needs modifying for them to fit....and for the effort, your better off buying the turbo diesel diff
dow50r wrote: Now you can put an 80 series diff in a 100 if you use the 100 side gears in it...but i believe the lsd needs modifying for them to fit....and for the effort, your better off buying the turbo diesel diff
Correct Andrew, the LSD has to be modified and it's more trouble than it's worth.
flog the ring out of it
100 lsd side gears fit straight into the 80 lsd ( have done it before )treebruiser wrote:dow50r wrote: Now you can put an 80 series diff in a 100 if you use the 100 side gears in it...but i believe the lsd needs modifying for them to fit....and for the effort, your better off buying the turbo diesel diff
Correct Andrew, the LSD has to be modified and it's more trouble than it's worth.
Wally
THERES ONLY ONE SUBSTITUTE FOR CUBES AND THATS MORE and if you want more inchs stroke it !!!!!!!!!!!
Ok, so to fit 4.3's in the 80 diff, you get 80 side gears and put them in the 100 housing and away you go...slight grind of the gear relief in the housing...simply mark with 100 gasket...i am running 4.3;s but with a arb rear locker and 100 series axles/hubs/rims, and am happy with the extra strength built in and return of std low range gearing with 35's
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