Topic: interchangable?

[Joe S.]

i got a third member in the mail today that i am planning on having my gears installed in. it is a V6 third from a 4 runner. my rear axle is (i was told) from a V6 pickup. will the two thirds interchange? here are some pics.

heh heh heh... GEARS!! 





this is the 3rd i got with the gears. it is from a V-6 rear end.



and this is my axle. the thirds have visible differences, but i roughly measured the distances between the stud holes and they appear to be the same. can you tell by looking at the outside if the two will interchange?

[79coyotefrg]

hard to tell fromt those pics,  but  it looks like a 4cyl  and a v6

but either way they will interchange,  3rd  for 3rd  but the gears are different,
this is a V6,


the other  i need to see the carrier/spider gears

[Joe S. [OP]]

dangit! i will run get some pics...

[Joe S. [OP]]

do these tell you what you need to know?
thanks!
joe

[jimbo74]

4 cylinder 8"


6 cylinder 8"

[Joe S. [OP]]

my V6 axle doesnt look like either of those...

[79coyotefrg]

looks like you got a 4 cylinder 3rd

[MiniSimp]

looks like you got a 4 cylinder 3rd

X2

[Joe S. [OP]]

ok, thanks guys... guess i am making another trip to the power train shop...

[Joe S. [OP]]

lol, he just called and said it is a 4 cyl third that i brought him. i talked to the guy i got the stuff from and he is gonna refund my money on the bearing kit. the guy at the shop said the V6 gears will work in the 4 cyl third... only difference he said was the pinion bearing.

[89toy]

Ok, so I may be a little lost here...is the 3rd in the box the one you just bought?  Why did you buy another V6 third if you just bought a V6 axle (I am assuming the axle came with a 3rd)?  Also, since I think you just bought the 3rd in the box (that looks like it is a 4cyl)...don't put your gears in that one...take the one out of the axle and rebuild it.  It would save you travel time to the power train shop (assuming you already bought V6 gears) and will be a little stronger than the 4cyl 3rd.  Just my 

(edit) I was a little late on my comment I guess.  Anyway, I would still say don't put the gears in the 4cyl third, take the 3rd out of the axle (V6) and put em' in that.

[89toy]

the guy at the shop said the V6 gears will work in the 4 cyl third... only difference he said was the pinion bearing.

  Why would marlin sell 4cyl and V6 gears as different items if they truly are not different?  Just something to think about...I think that the 4cyl and V6 gears are different.

[Joe S. [OP]]

man i dont know... he said they would work...   the guy i bought the stuff from said the third came out of a V6 4runner... maybe some of the v6 thirds have smaller pinion bearings? i have no clue. i am just going by what the man told me... but what you say makes sense...

i bought the other third so that i could just get it set up, so that i could take my axle apart and put it all back together at once... anyway, i am gonna just get this one set up and be done with it... if there are no differences other than the pinion bearing, i dont think a geo tracker with 33s, maybe 35s are gonna put that big of a strain on the pinion bearings.. lol

i hope i dont get screwed... i have done a LOT of business with these guys in the past and have never had a complaint. maybe this wont be my first...

[Joe S. [OP]]

anyone want to buy a stock V6 third? lol

[89toy]

seriously though, check out the price differences on the "ready to run" 3rd's that marlin sells.  There is a big hike in the price between the V6 and the 4 cyl (when you buy the same type of gears and locker).  I don't think the price difference is just to compensate for a different pinion bearing  , but I have been wrong before.  I would give Marlin a call and check out the exact differences (but 79coyote might know too...along with a lot of other people).    http://www.marlincrawler.com/htm/diff/pickup_diff.htm 

[~tc~]

http://home.4x4wire.com/erik/diffs/

[jimbo74]

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.




tc, that link rocks! i say it should be a sticky!

[79coyotefrg]

the v6 gears  CAN  be made to work in a 4cyl third  BUT  the housing isnt as strong,  i would suggest pulling the v6  from the housing and using the 4cyl as a  temp

i have 4 cyl hears in my elocker  but it took some fabbing to do it

[jimbo74]

i would suggest pulling the v6  from the housing and using the 4cyl as a  temp

[Joe S. [OP]]

this could explain my problem...

thanks guys! tc, that link was VERY informative! thank you!

* A few V6 trucks and 4runners have been found to have come with the 4cyl style diff from the factory. Nobody knows why.

[jimbo74]

my 2wd half ton came with an 8" rear end.... everyone said it was impossible and i was wrong and that my vin lied...... well the 4.10 diff i got from a 4x4 4runner bolted in no problems

[89toy]

I love it when I learn somethin' new...great link TC, it is in my favorites now 

[~tc~]

Yeah, I have it in my favorites for every time a "will this diff fit" question comes up on here, TTORA, or Yotatech... LOL

[bigarms23]

yes they are interchangeable on my 88 4runner i have v6 3rd members front and rear

[Joe S. [OP]]

lol, the drivetrain shop called and said the gears didnt fit... go figure. so since they already have that third apart, i think i am gonna just take my front gears and bearing kit and have them install it in that housing and carrier since it is already there... grrr... this is getting frustrating...

[Joe S. [OP]]

here are some pictures of the third removed from the V6 axle. let me make sure this is a V6 third before i send it off too... anyone? it kinda looks like a 4 cyl model judging from the link tc posted.






these pics are of the same third listed above

[rattlecanpaint]

here are some pictures of the third removed from the V6 axle. let me make sure this is a V6 third before i send it off too... anyone? it kinda looks like a 4 cyl model judging from the link tc posted.






these pics are of the same third listed above

That is a 4 cyl diff in those pictures.  Count the ribs on the sides.  3 ribs is a 4cyl.  4 ribs is a v6.

[Joe S. [OP]]

yep, like the other third, i was told it came from a v6 truck, and i guess it could have, but it was definately a 4 cyl diff. thanks!
joe

[Yota Up]

Measure the ribs on that thing, buddy.  I don't care about the count, because to me, it looks like the ribs on top picture are beefcake.

If they come out OVER 1/4" - you got a V6 third.  If you want, I'll take pictures of the 8 diffs or so I got lying around here and show you how THIN the ribs on a 4 cyl diff really are.  1/4" or less.

[THK Matt]

looks like V6 to me