904_runner's 1990 4Runner Build-Up Thread
#641
Well alot of what you are hearing is my buddy scotts runner with headers and a magnaflow... but you can hear me revving that 3.4l pretty good! 
The first run i did by him was way sicker.. i was driving it harder and throwing snow everywhere apparently.. didn't get that one on tape though.

The first run i did by him was way sicker.. i was driving it harder and throwing snow everywhere apparently.. didn't get that one on tape though.
#644
giving it in the old 4runner hey haha love the snow pics man
8.4 tacoma

- Carrier bearing truss and newer housing adds significant strength over V6 and 4cyl diffs
- Uses V6 carrier bearings, larger pinion bearings
- Uses shims for backlash adjustment instead of threaded adjusters
- Twelve 12mm Ring gear bolts
- 10mm axle housing studs with 14mm nuts
- 30 splilne axles
- 30 spline pinion
Above you can see that the 8.4 has a stronger housing, larger bearings, larger pinion, more and larger ring gear bolts, larger housing studs/nuts, and trusses to stop deflection between the pinion and ring gear.
i quoted this from whorkrz and this seems to be realy stong? just thought i would mention this
8.4 tacoma

- Carrier bearing truss and newer housing adds significant strength over V6 and 4cyl diffs
- Uses V6 carrier bearings, larger pinion bearings
- Uses shims for backlash adjustment instead of threaded adjusters
- Twelve 12mm Ring gear bolts
- 10mm axle housing studs with 14mm nuts
- 30 splilne axles
- 30 spline pinion
Above you can see that the 8.4 has a stronger housing, larger bearings, larger pinion, more and larger ring gear bolts, larger housing studs/nuts, and trusses to stop deflection between the pinion and ring gear.
i quoted this from whorkrz and this seems to be realy stong? just thought i would mention this
Last edited by 91_TOYOTA_4x4; Nov 26, 2009 at 04:29 PM.
#646
yah just throwing it out there
didnt you say your last 5.29 was 4cyl diff? arent they weeker compared to v6 3rd's? maybe 3.4 + 40"s + 4cyl diff + welded diff = BOOM lol. and your first break was because of the lockright. idk but your runner is just sweet
didnt you say your last 5.29 was 4cyl diff? arent they weeker compared to v6 3rd's? maybe 3.4 + 40"s + 4cyl diff + welded diff = BOOM lol. and your first break was because of the lockright. idk but your runner is just sweet
#647
Yes the 4cylinder carriers are weaker than the v6's.. ive never personally heard anyone having problems with either.. but yea im sure the 40's and the 3.4 had a bunch to do with it..
#648
140$ - Did that include the carrier and everything?
I'm picking up a 4cyl. 529 geared diff in carrier with new bearings today for $230. I thought it was a good deal but $140 sounds better lol. Oh, I'm only running 37's in the 3.slow so I don't think mine will shred like yours did. lol. Its not even gunna be locked for a lil while. Moneys tight for me right now. But that's ok I'll just go
and get
#649
Well the first replacement diff i bought (the one i broke the carrier in half) i got for $180 and it was welded. No clue who set it up nor the condition.
The one i just bought was for $140 off a friend of a friend, and it is welded, said a local 4wd shop set it up most likely.
The one i just bought was for $140 off a friend of a friend, and it is welded, said a local 4wd shop set it up most likely.
#650
Well the first replacement diff i bought (the one i broke the carrier in half) i got for $180 and it was welded. No clue who set it up nor the condition.
The one i just bought was for $140 off a friend of a friend, and it is welded, said a local 4wd shop set it up most likely.
The one i just bought was for $140 off a friend of a friend, and it is welded, said a local 4wd shop set it up most likely.
So I just gotta bolt it up and I'm good. lol. It was hard enough for me to find the diff I need in the hills. Oh and I have the 2nd gen 4runner too and I'm putting in the 4cyl. diff which doesn't have the ABS sensor hole in it. I was just wondering what did you do with yours?
#652
dang Mike, looks like you had some fun. I did not realize there was that much snow up there already. the wife and I may have to go up and get a tree
not much changed on my end. still runnin 31's for now. If I take this job that was offered I may finish it. not sure. job requires me to be down in the desert for a year but pays bank. just not sure I want to be away from the wife and kid that much. Let me know when your going up and I will atleast go as far as I can.
not much changed on my end. still runnin 31's for now. If I take this job that was offered I may finish it. not sure. job requires me to be down in the desert for a year but pays bank. just not sure I want to be away from the wife and kid that much. Let me know when your going up and I will atleast go as far as I can.
#653
Oh ok. I was thinking about using a zip tie to keep it up too lol. Did your ABS light come on though? If so what did you do with that? I was thinking about just taking the dash apart and removing the bulb.
#654
dang Mike, looks like you had some fun. I did not realize there was that much snow up there already. the wife and I may have to go up and get a tree
not much changed on my end. still runnin 31's for now. If I take this job that was offered I may finish it. not sure. job requires me to be down in the desert for a year but pays bank. just not sure I want to be away from the wife and kid that much. Let me know when your going up and I will atleast go as far as I can.
not much changed on my end. still runnin 31's for now. If I take this job that was offered I may finish it. not sure. job requires me to be down in the desert for a year but pays bank. just not sure I want to be away from the wife and kid that much. Let me know when your going up and I will atleast go as far as I can.
#656
I want to get that kit eventually.. I'd look around because you may find a set up used. I haven't actually heard much about the kit but rear disc brakes is so nice. You would probably never have a problem with braking again as far as everything is in working order and set up right.
Mine are really squishy but I have some problems to work out. lol. I'd get that kit for sure though. I think its worth it.
Mine are really squishy but I have some problems to work out. lol. I'd get that kit for sure though. I think its worth it.
#660
I want to get that kit eventually.. I'd look around because you may find a set up used. I haven't actually heard much about the kit but rear disc brakes is so nice. You would probably never have a problem with braking again as far as everything is in working order and set up right.
Mine are really squishy but I have some problems to work out. lol. I'd get that kit for sure though. I think its worth it.
Mine are really squishy but I have some problems to work out. lol. I'd get that kit for sure though. I think its worth it.
Here's a VERY detailed write-up on it - http://www.pirate4x4.com/forum/showthread.php?t=452546
My brother just did this swap on his 93 4Runner that he is building up and hopefully this works out well.





