v6 and 4cyl rear axle assembly questions
Feb 27, 2007 | 12:46 PM
#1
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From: Hudson Valley, NY
v6 and 4cyl rear axle assembly questions
ok, so i've got a 22re '94 4x4 pickup. i'm in the process of getting an e-locker from a 2000+ TRD package truck/4 runner. i'm going to retrofit it to my truck following these directions:
http://home.off-road.com/~kemanuel/elocker/elocker.html
now, i also came across the following information from http://home.4x4wire.com/erik/diffs/#rear:
now, i'm a newbie to the whole gearing thing, but i'm mechanically inclined, and i'm anxious to learn.
the above bolded sentences confused me. is that saying that i can take a v6 rear end and bolt it up to my 4cyl truck? i know i don't need a v6 rear right now, but this summer i've got a 7mgte swap lined up. (turbo supra motor), and i know i'm going to want a beefier rearend. i figured i'd kill two birds with one stone, and just get the v6 rear now (since i came across an awesome deal on one locally, in very nice shape out of a 4 runner)
so, i guess my question is, will it bolt up if i use the entire rear end assembly from axle to axle? or can i just bolt up the 3'rd member? from what i've read, it's also much easier to fit the e-locker to the v6 rear, as it takes fewer modifications to make it fit and function properly. (more on that can be read here for those interested: http://home.off-road.com/~kemanuel/elocker/elocker.html
thanks for any assistance you can provid me, even if it is to yell "search harder!"
-shaeff
http://home.off-road.com/~kemanuel/elocker/elocker.html
now, i also came across the following information from http://home.4x4wire.com/erik/diffs/#rear:
All pre-'95 4-cylinder 4wd mini-trucks & 4Runners use the Toyota 8" 2-pinion differential front and rear (except turbo models). This is known as the "4cyl diff." This diff is by far the most common diff in older Toyotas.
Ten 10mm ring gear bolts, 27 spline pinion shaft.
The V6/Turbo 8" diff
4cyl Turbo and V6* 4Runners and mini-trucks use the Toyota 8" 4-pinion differential in the rear. This diff is known as the "V6/Turbo diff." It has larger carrier bearings, is generally stronger than the standard 4cyl version, and is a direct swap into axles that use the 4cyl 8" diff. Separate gear sets are made for the V6 style diff (only from Toyota and Precision Gear), but cheaper, more readily available 4cyl style gears are commonly made to fit- the only difference being a very slightly larger pinion gear on the V6 style gear (the actual strength difference in gear sets is debatable). The strength increase in this diff over the 4cyl diff comes mainly from the beefed up housing, which stiffens the entire assembly, keeping the gears in proper (stronger) alignment.
Although somewhat rare, there is a version of this diff that came from the factory with 4.88 gears. The carrier (3rd member housing) has a different pinion offset so that the ring gear doesn't need to be as thick. This means that no gears other than the factory 4.88's will fit this particular diff. However, diff cases, commonly called carriers (factory, LSD, lockers, etc.), for the standard V6/Turbo diff should be interchangeable (4cyl and V6/Turbo carriers are NOT interchangeable).
Ten 10mm ring gear bolts, 27 spline pinion shaft.
The V6/Turbo 8" diff
4cyl Turbo and V6* 4Runners and mini-trucks use the Toyota 8" 4-pinion differential in the rear. This diff is known as the "V6/Turbo diff." It has larger carrier bearings, is generally stronger than the standard 4cyl version, and is a direct swap into axles that use the 4cyl 8" diff. Separate gear sets are made for the V6 style diff (only from Toyota and Precision Gear), but cheaper, more readily available 4cyl style gears are commonly made to fit- the only difference being a very slightly larger pinion gear on the V6 style gear (the actual strength difference in gear sets is debatable). The strength increase in this diff over the 4cyl diff comes mainly from the beefed up housing, which stiffens the entire assembly, keeping the gears in proper (stronger) alignment.
Although somewhat rare, there is a version of this diff that came from the factory with 4.88 gears. The carrier (3rd member housing) has a different pinion offset so that the ring gear doesn't need to be as thick. This means that no gears other than the factory 4.88's will fit this particular diff. However, diff cases, commonly called carriers (factory, LSD, lockers, etc.), for the standard V6/Turbo diff should be interchangeable (4cyl and V6/Turbo carriers are NOT interchangeable).
the above bolded sentences confused me. is that saying that i can take a v6 rear end and bolt it up to my 4cyl truck? i know i don't need a v6 rear right now, but this summer i've got a 7mgte swap lined up. (turbo supra motor), and i know i'm going to want a beefier rearend. i figured i'd kill two birds with one stone, and just get the v6 rear now (since i came across an awesome deal on one locally, in very nice shape out of a 4 runner)
so, i guess my question is, will it bolt up if i use the entire rear end assembly from axle to axle? or can i just bolt up the 3'rd member? from what i've read, it's also much easier to fit the e-locker to the v6 rear, as it takes fewer modifications to make it fit and function properly. (more on that can be read here for those interested: http://home.off-road.com/~kemanuel/elocker/elocker.html
thanks for any assistance you can provid me, even if it is to yell "search harder!"
-shaeff
Feb 27, 2007 | 01:18 PM
#2
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First question, not every Toyota axle with an 8" 3rd member, will bolt right up to a 94 pu. But, most third members will bolt right up to any Toyota axle housing that accepts an 8" 3rd member. All the axle shafts fit the same for the 8" also. So, what I mean is any 8" 3rd will bolt to your trucks 8" axle.
#2, An e-locker will require the same amount of mods to any non-e-locker 8" axle housing, regardless.
#2, An e-locker will require the same amount of mods to any non-e-locker 8" axle housing, regardless.
Last edited by MudHippy; Feb 27, 2007 at 01:25 PM.
Feb 27, 2007 | 02:05 PM
#3
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From: Hudson Valley, NY
ah hell, i just realized that i posted in teh wrong section, too. 
i have a '94.
thanks for the info, though.
the reason i thought that it's easier for the v6 to be retrofitted with the e-locker is because of these captions and their accompanying pictures.
and the pic that goes with it:
http://home.off-road.com/~kemanuel/e...using-done.jpg
__________________________________________________ __________________________________
and here's the part that made me think that it's easier with the v6 rear:
and the pic that goes with that caption: http://www.4x4wire.com/toyota/tech/e...using_topB.jpg
so, i guess i'm still confused. haha.
-shaeff
i have a '94.thanks for the info, though.
the reason i thought that it's easier for the v6 to be retrofitted with the e-locker is because of these captions and their accompanying pictures.
Originally Posted by website listed above
The first step was to clean up the housing, drill and tap four holes for the new axle studs, cut the C-shaped notch to accommodate the diff lock shift fork and add a bead of weld around the two longer studs to provide more surface area for the gasket to seal. Shown here is the completed housing.
http://home.off-road.com/~kemanuel/e...using-done.jpg
__________________________________________________ __________________________________
and here's the part that made me think that it's easier with the v6 rear:
Originally Posted by website listed above
This photo, taken from the locker retrofit article, illustrates the modifications necessary on a 4 cylinder differential housing. The yellow circle inside the housing represents the need to dent the housing outward to provide clearance for a bolt on the back of the differential carrier. The red squares at the top and bottom show the amount of material that should be removed to accommodate the ring gear. Much to my delight, these modifications were not necessary on my V6 rear. Apparently there are some differences between 4 cylinder and V6 housings.
so, i guess i'm still confused. haha.
-shaeff
Last edited by shaeff; Feb 27, 2007 at 02:27 PM. Reason: to add some info, and questions
Feb 28, 2007 | 01:01 PM
#5
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From: Peoria IL
AFAIK the 8" rear for early 90's pickups and 4runners use an identical houseing.
The 4cyl vs 6cyl thing was for the carrier that bolts INTO the houseing. THey feature diffrent ribbing patterns and 2 pin/4 pin etc carriers.
All of the early 90's houseins need to be notched via the pics to accept the shift fork on the E-locker.
IN additon beafing the mating surface and drill/tapping a couple of extra holes is needed.
i dont know if that answers your question or not...
The 4cyl vs 6cyl thing was for the carrier that bolts INTO the houseing. THey feature diffrent ribbing patterns and 2 pin/4 pin etc carriers.
All of the early 90's houseins need to be notched via the pics to accept the shift fork on the E-locker.
IN additon beafing the mating surface and drill/tapping a couple of extra holes is needed.
i dont know if that answers your question or not...
Feb 28, 2007 | 01:24 PM
#6
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From: Hudson Valley, NY
actually, yes. i did some more research, and have a better grasp on what it is that i'd be doing.
it's not the entire rear axle assembly that's beefed up on the v6, it's just the 3rd member which holds the gears. making the rear end fit the e-locker isn't a problem. basically, i was just figuring out if the entire rear axle assembly from a 4 runner of the same generation as my truck (or however that goes) with a v6 would bolt up to my truck.
i wanted to do that because i can get the entire rear axle assembly really cheap, so i could set up the e-locker and get the axle all P.O.R. 15'd, as well as get all the wiring harness made before i pull my truck apart. that way i'd only have one day of downtime.
thanks!
-shaeff
it's not the entire rear axle assembly that's beefed up on the v6, it's just the 3rd member which holds the gears. making the rear end fit the e-locker isn't a problem. basically, i was just figuring out if the entire rear axle assembly from a 4 runner of the same generation as my truck (or however that goes) with a v6 would bolt up to my truck.
i wanted to do that because i can get the entire rear axle assembly really cheap, so i could set up the e-locker and get the axle all P.O.R. 15'd, as well as get all the wiring harness made before i pull my truck apart. that way i'd only have one day of downtime.
thanks!
-shaeff
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