Topic: running different gears

[NCK4L]

i have a 86 4runner with a 22re and an automatic i am thinkin that i most likely have 4.30 gears in the axle i was going to check for sure tomorrow. I was wondering how big of a deal it would be if ran 4.10's in the rear and kept my 4.30's up front? any info would help. Thanks

[RABIDYOTA]

don't do it to big of a gap between gears are you sas ed yet? and why would u want a taller gear any way

[jrock]

I ran with 32in tires on the front and 33s in the rear (like 4.10 rear 4.30 front) and I only locked it off-road and I could feel it binding up but it wasn't very bad.

[NCK4L [OP]]

don't do it to big of a gap between gears are you sas ed yet? and why would u want a taller gear any way

the reason is because i have an 86 runner with an automatic so i am pretty sure it has 4.30 gears and there is a guy selling a 4.10 third that has a detroit locker. I have no plans on modifying the vehicle other than installing a locker in the rear but am also going to swap in a manual transmission. I know my dad is running 5.38's in the rear and 5.29's up front and he hasnt had  a problem but thats not as big of a gap as a 4.10 and 4.30. Thanks for the input guys

[RABIDYOTA]

put you'r 430s on the detroit you'll be happier   just check your back lash swap ring gear over and reset your back lash  no need to touch you'r pinion

[NCK4L [OP]]

put you'r 430s on the detroit you'll be happier   just check your back lash swap ring gear over and reset your back lash  no need to touch you'r pinion

alright maybe i will do that. Just to make sur if this detroit carrier has 4.10 on it will i one day be able to swap 5.29's on it im just wondering if there are any carrier breaks?

[RABIDYOTA]

u should be good to go

[Blingn]

i used a 410 front and a 430 welded rear for a traile rig and it worked good on 35's

[NCK4L [OP]]

put you'r 430s on the detroit you'll be happier   just check your back lash swap ring gear over and reset your back lash  no need to touch you'r pinion

i have a question about this. Your saying i can just swap the ring gear on my 4.30's over to the 4.10's with out changing the pinions at all. I called the guy here that sets up my axles he said that i would need to swap both ring and pinion and that i cant mismatch gears. Also would i be able to use my 4.30 4 cylinder gear in a v6 housing on a detroit carrier?
Thanks,    Dillon

[NCK4L [OP]]

i was also wondering if  a detroit locker out of  v6 diff will fit into a 4cyl differential. Any help would be appreciated thanks.

[Marlin]

A quick rule to remember is 1%.
The front and rear diffs must be within 1% of each other.

If you have a 4.30, you can safely use a 4.26 to 4.34.
If you have a 5.29, you can safely use a 5.24 to 5.34.

Running a 5.29 and a 5.38 will in fact work, but it makes it hard on the drivetrain. I would not advise it.

Yes, you can put the larger V6 carrier into the 4 cyl housing.
You will need the Timken set X32010X cone and Y32010Y cup.
This has been done for a number of years by ARB.

Marlin

[NCK4L [OP]]

A quick rule to remember is 1%.
The front and rear diffs must be within 1% of each other.

If you have a 4.30, you can safely use a 4.26 to 4.34.
If you have a 5.29, you can safely use a 5.24 to 5.34.

Running a 5.29 and a 5.38 will in fact work, but it makes it hard on the drivetrain. I would not advise it.

Yes, you can put the larger V6 carrier into the 4 cyl housing.
You will need the Timken set X32010X cone and Y32010Y cup.
This has been done for a number of years by ARB.

Marlin

cool thanks for the help Marlin

[Blingn]

Marlin is the man, I used set 32010x on my air locker that has a v6 carrier just like Marlin said.  I then used that carrier and put it into my 4 cyl case.  Timken side bearing part # 32010x I found them at our Napa for 41.00 a piece.

[NCK4L [OP]]

Marlin is the man, I used set 32010x on my air locker that has a v6 carrier just like Marlin said.  I then used that carrier and put it into my 4 cyl case.  Timken side bearing part # 32010x I found them at our Napa for 41.00 a piece.

cool thanks for the help guys what about running a 4 cylinder carrier in a v6 third?  Sorry if this is a stupid question.

[BLACKDOG]

i have a question about this. Your saying i can just swap the ring gear on my 4.30's over to the 4.10's with out changing the pinions at all. I called the guy here that sets up my axles he said that i would need to swap both ring and pinion and that i cant mismatch gears. Also would i be able to use my 4.30 4 cylinder gear in a v6 housing on a detroit carrier?
Thanks,    Dillon

I believe what he means is pull the 4.30 RG and carrier out of the 4.30 third, remove the ring gear, and put the detroit and the 4.30 RG back into the 4.30 third.

[RABIDYOTA]

blackdog is right i was assuming you have 2 compleat thirds

[Marlin]

No, a 4 cyl carrier cannot be installed into a V6 diff casting.

4 cyl carrier;

Cone  LM603049  45.2 mm
Cup    LM603014  79.9 mm

V6 carrier

Cone  X32010X  50.0 mm
Cup   Y32010Y   80.0 mm

Therefor, you need a bearing: 45.2mm (1.25/32") x 80.0 mm. This combination is not available.

Years ago, ARB made the first Turbo, V6 air locker by pressing sleeves onto the small diameter 4 cyl carrier, and then OD grinding them to 50.0 mm.
This is the only way that I have ever seen this done.
That's a lot of work to put a weaker, smaller carrier into the V6 housing.

Marlin

[NCK4L [OP]]

No, a 4 cyl carrier cannot be installed into a V6 diff casting.

4 cyl carrier;

Cone  LM603049  45.2 mm
Cup    LM603014  79.9 mm

V6 carrier

Cone  X32010X  50.0 mm
Cup   Y32010Y   80.0 mm

Therefor, you need a bearing: 45.2mm (1.25/32") x 80.0 mm. This combination is not available.

Years ago, ARB made the first Turbo, V6 air locker by pressing sleeves onto the small diameter 4 cyl carrier, and then OD grinding them to 50.0 mm.
This is the only way that I have ever seen this done.
That's a lot of work to put a weaker, smaller carrier into the V6 housing.

Marlin

thanks again Marlin. I want to buy a detroit locker but i have  a 4 cyl third in my runner right now but later on when i want to upgrade to a v6 third and lower gears i want to be able to use the detroit in that as well. It sounds like that is possible if i buy a v6 detroit and buy the special bearings to put it in my 4 cyl  third.