V6 vs 4-cyl IFS front diffs
11-01-2011, 01:25 PM
#1
Registered User
Thread Starter
V6 vs 4-cyl IFS front diffs
I see on Marlin's site, they list a different setup kit for the V6/turbo 7.5" than the 4-cyl one. What's the difference? Is the V6 version any stronger?
I've got one of each, and a supra 7.5" LSD. Just wondering if it matters which one I use.
I've got one of each, and a supra 7.5" LSD. Just wondering if it matters which one I use.
11-05-2011, 02:53 AM
#2
Yes, the V6/Turbo versions are better because they are stronger. From Marlin's site:
Note: V6 and High Pinion differential are available and a very easy conversion. Converting to a 1986-1995 Turbo/V6 differentials will provide larger bearings and a stronger 3rd member housing but like the 4cyl 3rd member is limited by the standard rotation of the ring and pinion. Converting to a 1991-1997 FJ80 Land Cruiser front High Pinion 3rd member will provide larger bearings, stronger housing and a reverse cut ring and pinion. A reverse cut ring & pinion will give increased front flange clearance, reduced front drive shaft angle and is substantially stronger in forward motion then a standard rotation. For pricing and info click here: Turbo/V6 High Pinion
Also check out this: http://www.northwestoffroad.com/part...gnpinion.php#4 Check out the pic comparing the
4 cyl ring and pinion with the V6. Bigger bearing too.
This should help you. What are you planning on doing with the truck?
Note: V6 and High Pinion differential are available and a very easy conversion. Converting to a 1986-1995 Turbo/V6 differentials will provide larger bearings and a stronger 3rd member housing but like the 4cyl 3rd member is limited by the standard rotation of the ring and pinion. Converting to a 1991-1997 FJ80 Land Cruiser front High Pinion 3rd member will provide larger bearings, stronger housing and a reverse cut ring and pinion. A reverse cut ring & pinion will give increased front flange clearance, reduced front drive shaft angle and is substantially stronger in forward motion then a standard rotation. For pricing and info click here: Turbo/V6 High Pinion
Also check out this: http://www.northwestoffroad.com/part...gnpinion.php#4 Check out the pic comparing the
4 cyl ring and pinion with the V6. Bigger bearing too.
This should help you. What are you planning on doing with the truck?
11-05-2011, 05:36 AM
#3
Registered User
That's funny because I don't see IFS v6 ring and pinions on there for the FRONT 7.5". Only the rear 8". Same thing with the master kits. I believe there is no difference between the front ifs v6 and the front 4cyl ifs.
Now the front 4.88 on the other hand, I am not sure about. I know the rear 4.88 is different.
Now the front 4.88 on the other hand, I am not sure about. I know the rear 4.88 is different.
11-05-2011, 05:56 AM
#4
There's ONE difference. Carrier bearings are larger for the V6 7.5" diff. And therefore won't fit the 4 cyl. 7.5" diff. I can't remember for sure, but I think the Supra 7.5" is the V6 version.
Last edited by MudHippy; 11-05-2011 at 05:57 AM.
11-05-2011, 06:00 AM
#5
Registered User
I guess that's one reason why I don't trust NWOR. If those v6 IFS bearings are different then why the heck would they list their setup kits like this: Why the two IFS master kits? Notice they split halfway through 88. Is that because the v6's started showing up afer that and the "v6" ifs was also put into the 4cyls? Or what? Never thought about this before I guess. But I had better since I got a front 4.88 sitting here.
Master Diff Kit (IFS) ('89-3/'88) N63020
Master Diff Kit (IFS) (4/'88-'95) N63030
Bearing Set (IFS) ('86-3/'88) N63103
Bearing Set (IFS) (4/'88-'95) N63104
Shim Set (IFS) N63203
Master Diff Kit (8") N63000
Bearing Set (8") N63101
Shim Set (8") N63201
Master Diff Kit (V6) N63010
Bearing Set (V6) N63102
Shim Set (V6) N63202
Gasket (8") N63301
Pinion Seal N63401
Master Diff Kit (IFS) ('89-3/'88) N63020
Master Diff Kit (IFS) (4/'88-'95) N63030
Bearing Set (IFS) ('86-3/'88) N63103
Bearing Set (IFS) (4/'88-'95) N63104
Shim Set (IFS) N63203
Master Diff Kit (8") N63000
Bearing Set (8") N63101
Shim Set (8") N63201
Master Diff Kit (V6) N63010
Bearing Set (V6) N63102
Shim Set (V6) N63202
Gasket (8") N63301
Pinion Seal N63401
Last edited by xxxtreme22r; 11-05-2011 at 06:05 AM.
11-05-2011, 06:05 AM
#6
11-05-2011, 06:07 AM
#7
Registered User
Not to be a jerk but that's a 7.5 rear. Are you saying the 7.5 carriers are the same between front and rear? This is also on a tacoma and not a pickup.
Wait....
now if you say v6 4runner then your only option is an 88-95 as there is no 86-87 v6 4runner. Which leads me to my last edit of my last post. Meaning if I told them a 94 4cyl 4runner I'd get the same part as saying v6 4runner.
Wait....
Another option is to ask for carrier bearings for the front 7.5" diff from an IFS v6 4Runner or pickup. For instance, if you tell the parts counter person that you have a 1990 V6 4Runner, you should end up with the correct carrier bearings for use on the True Trac 911A565 in a 7.5" rear 3rd member.
Last edited by xxxtreme22r; 11-05-2011 at 06:09 AM.
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11-05-2011, 06:11 AM
#8
That's quite alright...but yes, the 7.5" carriers are the same front and rear. IF/WHEN they have the same diameter carrier bearing journals. Everything else is THE SAME.
AFAIK the 95.5+ 7.5" carriers are the same too.
http://home.4x4wire.com/erik/diffs/
A quick aside: Anyone who has purchased a replacement carrier for the front end of an IFS Toyota 4x4 has probably run into this issue. It seems that the trucks/4runners (1986-95) equipped with 4 cylinder motors got the 7.5" front diff with 45mm bearing journals, while trucks/4runners (88-95) with the 3.0 V6 got 7.5" front diffs with the 50mm bearing journals. I don't know if this difference carried on into 7.5" front diffs of the 95.5-later 4x4 Tacoma, Tundra, Sequoia etc. I've only ever dealt with Toy 8" diffs up to this point, so this was news to me.
The 7.5" IFS diff
'86-95 IFS trucks and 4Runners, and all '93-98 T100s use a 7.5" front diff that is offset to the passenger's side. Later models came with ADD (Automatic Differential Disconnect) which uses a vacuum actuated mechanism to disconnect the drivers side axle shaft from the differential. Carriers and gear sets are interchangeable between the two different versions (and also happen to be the same as used in the 2wd Toyota pickup 7.5" diffs). One difference between ADD and non-ADD diffs is that the carrier in an ADD differential has needle bearings supporting the axle shafts at the differential. The non-ADD diffs did not have this bearing and sometimes the passenger side axle flange wears the carrier and becomes loose or wobbly, eventually causing oil leaks, noise, and possible spider gear damage. ADD and non-ADD diffs are swappable as are most of their parts. This makes it possible to change your ADD diff to non-ADD by simply swapping parts as I've done in the picture to the right. This is desirable to some people since some of the ADD stubs are smaller diameter than the non-ADD stubs and are therefore slightly weaker.
- Passenger's side
- Low pinion
- 27 spline axles
* This diff is based on the 2wd pickup 7.5" rear diff- same internals, different housing.
Late-model 7.5" diff
'95-03 Tacoma, '00-04 Tundra, ?? Sequoia's, and 96-02 4Runners have a high-pinion 7.5" IFS front diff offset to the drivers side. The high-pinion design is used so that the rack and pinion steering and anti-sway bar on these vehicles can run under the front driveshaft. The housing is a unique bolt-together design. The carrier inside is exactly the same as the '86-95 IFS diffs, so LSD's and lockers for it are also the same. However, since this is a high-pinion diff, the gears for it are different (reverse-cut) than the earlier diff. There is an ADD and non-ADD version of this diff as well.
These diffs use different gear sets than the earlier IFS diff because of the high-pinion design.
- Driver's side
- High pinion
- 27 spline axles
- Bolt-together "clamshell" housing design.
'86-95 IFS trucks and 4Runners, and all '93-98 T100s use a 7.5" front diff that is offset to the passenger's side. Later models came with ADD (Automatic Differential Disconnect) which uses a vacuum actuated mechanism to disconnect the drivers side axle shaft from the differential. Carriers and gear sets are interchangeable between the two different versions (and also happen to be the same as used in the 2wd Toyota pickup 7.5" diffs). One difference between ADD and non-ADD diffs is that the carrier in an ADD differential has needle bearings supporting the axle shafts at the differential. The non-ADD diffs did not have this bearing and sometimes the passenger side axle flange wears the carrier and becomes loose or wobbly, eventually causing oil leaks, noise, and possible spider gear damage. ADD and non-ADD diffs are swappable as are most of their parts. This makes it possible to change your ADD diff to non-ADD by simply swapping parts as I've done in the picture to the right. This is desirable to some people since some of the ADD stubs are smaller diameter than the non-ADD stubs and are therefore slightly weaker.
- Passenger's side
- Low pinion
- 27 spline axles
* This diff is based on the 2wd pickup 7.5" rear diff- same internals, different housing.
Late-model 7.5" diff
'95-03 Tacoma, '00-04 Tundra, ?? Sequoia's, and 96-02 4Runners have a high-pinion 7.5" IFS front diff offset to the drivers side. The high-pinion design is used so that the rack and pinion steering and anti-sway bar on these vehicles can run under the front driveshaft. The housing is a unique bolt-together design. The carrier inside is exactly the same as the '86-95 IFS diffs, so LSD's and lockers for it are also the same. However, since this is a high-pinion diff, the gears for it are different (reverse-cut) than the earlier diff. There is an ADD and non-ADD version of this diff as well.
These diffs use different gear sets than the earlier IFS diff because of the high-pinion design.
- Driver's side
- High pinion
- 27 spline axles
- Bolt-together "clamshell" housing design.
Last edited by MudHippy; 11-05-2011 at 06:24 AM.
11-05-2011, 06:14 AM
#9
Registered User
so.... this all tells me NWOR's website is just plain wrong. And should say.
Master Diff Kit (IFS) N63020 4cyl
Master Diff Kit (IFS) N63030 6cyl
Bearing Set (IFS) N63103 4cyl
Bearing Set (IFS) N63104 6cyl
And leave the build dates out of it?
Master Diff Kit (IFS) N63020 4cyl
Master Diff Kit (IFS) N63030 6cyl
Bearing Set (IFS) N63103 4cyl
Bearing Set (IFS) N63104 6cyl
And leave the build dates out of it?
11-05-2011, 06:18 AM
#10
Registered User
ahhhh hhhaaaaaaa another misleading typo Should say 4cyl turbo !!!! Now I know why I hate NWOR so much.
Not to mention the build date typo 89 should say 86.
8" '89-'95 4 cyl & 6 cyl
Large Bearing
Large Bearing
Master Diff Kit (IFS) ('89-3/'88)
N63020
N63020
Last edited by xxxtreme22r; 11-05-2011 at 06:21 AM.
11-05-2011, 06:25 AM
#11
Registered User
Now this is more like it. Notice they separate the v6 from the 4cyl IFS. Don't go by the stock photos though as they are using the same photo.
http://www.marlincrawler.com/differential/setup-kit
http://www.marlincrawler.com/differential/setup-kit
11-05-2011, 08:49 AM
#12
Registered User
Thread Starter
Yes, the V6/Turbo versions are better because they are stronger. From Marlin's site:
Note: V6 and High Pinion differential are available and a very easy conversion. Converting to a 1986-1995 Turbo/V6 differentials will provide larger bearings and a stronger 3rd member housing but like the 4cyl 3rd member is limited by the standard rotation of the ring and pinion. Converting to a 1991-1997 FJ80 Land Cruiser front High Pinion 3rd member will provide larger bearings, stronger housing and a reverse cut ring and pinion. A reverse cut ring & pinion will give increased front flange clearance, reduced front drive shaft angle and is substantially stronger in forward motion then a standard rotation. For pricing and info click here: Turbo/V6 High Pinion
Also check out this: http://www.northwestoffroad.com/part...gnpinion.php#4 Check out the pic comparing the
4 cyl ring and pinion with the V6. Bigger bearing too.
This should help you. What are you planning on doing with the truck?
Note: V6 and High Pinion differential are available and a very easy conversion. Converting to a 1986-1995 Turbo/V6 differentials will provide larger bearings and a stronger 3rd member housing but like the 4cyl 3rd member is limited by the standard rotation of the ring and pinion. Converting to a 1991-1997 FJ80 Land Cruiser front High Pinion 3rd member will provide larger bearings, stronger housing and a reverse cut ring and pinion. A reverse cut ring & pinion will give increased front flange clearance, reduced front drive shaft angle and is substantially stronger in forward motion then a standard rotation. For pricing and info click here: Turbo/V6 High Pinion
Also check out this: http://www.northwestoffroad.com/part...gnpinion.php#4 Check out the pic comparing the
4 cyl ring and pinion with the V6. Bigger bearing too.
This should help you. What are you planning on doing with the truck?
Thanks for all the attempts guys, but the guys on Pirate came through with a bunch of tech info on 'em. And I've already bought a V6 ABS front end for the extra support bearing.
http://www.pirate4x4.com/forum/showthread.php?t=1018915
11-05-2011, 09:36 AM
#13
Thanks for all the attempts guys, but the guys on Pirate came through with a bunch of tech info on 'em. And I've already bought a V6 ABS front end for the extra support bearing.
http://www.pirate4x4.com/forum/showthread.php?t=1018915
http://www.pirate4x4.com/forum/showthread.php?t=1018915
HOWEVER for the record...I didn't attempt anything. I answered your question in FULL detail. And why would you by a V6 ABS front end? Oh that's right...YOU'RE NOT EVEN AWARE THAT THERE IS NO V6 ABS FRONT END!!! LMFAO!!! WAY TO GO PIRATE!!!!
There's ADD and non-ADD. ABS has NOTHING to do with it. AND YOU DON'T WANT THE ADD FRONT END FOR STRENGTH...PURE BS!!! Of course all this was explained THOROUGHLY by my previous posts and the links contained therein.
Last edited by MudHippy; 11-05-2011 at 09:41 AM.
11-05-2011, 09:43 AM
#14
Registered User
Yeah I am still debating if I wanna "delete" the ADD tube on mine or just "lock" it in. It's my understanding those needle bearings are actually a bad thing in the ADD diffs, but still reading up on what I want to do with this ADD unit I have. (which happens to have ABS BTW at least I think so, I got to look again. 
lol. )
lol. )
Last edited by xxxtreme22r; 11-05-2011 at 09:46 AM.
11-05-2011, 10:09 AM
#16
Registered User
I think your right, took a look at mine, no sensor on the housing anywhere for ABS, I musta been thinking of what I was gonna do with the rear when I find one that had ABS.
11-05-2011, 11:08 AM
#17
Registered User
Thread Starter
Ummm...you're welcome?
HOWEVER for the record...I didn't attempt anything. I answered your question in FULL detail. And why would you by a V6 ABS front end? Oh that's right...YOU'RE NOT EVEN AWARE THAT THERE IS NO V6 ABS FRONT END!!! LMFAO!!! WAY TO GO PIRATE!!!!
There's ADD and non-ADD. ABS has NOTHING to do with it. AND YOU DON'T WANT THE ADD FRONT END FOR STRENGTH...PURE BS!!! Of course all this was explained THOROUGHLY by my previous posts and the links contained therein.
HOWEVER for the record...I didn't attempt anything. I answered your question in FULL detail. And why would you by a V6 ABS front end? Oh that's right...YOU'RE NOT EVEN AWARE THAT THERE IS NO V6 ABS FRONT END!!! LMFAO!!! WAY TO GO PIRATE!!!!
There's ADD and non-ADD. ABS has NOTHING to do with it. AND YOU DON'T WANT THE ADD FRONT END FOR STRENGTH...PURE BS!!! Of course all this was explained THOROUGHLY by my previous posts and the links contained therein.
I'll give you a minute to go pick your wedgie. The "attempt" comment was not meant as a bash, but all your information about 7.5" carriers was not what I was asking. I was asking about the housing.
ADD, ABS.....typo. it's an ADD housing, which has the extra needle bearing for the passenger side axle. I will be converting it to non-add with the tube and driver's side shaft from one of my non-ADD diffs.
11-05-2011, 08:26 PM
#18
Registered User
NWOR would like you to believe they're the Last Word on Toyota 4x4 trucks but they're not. Don't fall for it. Caveat emptor; 95 percet of what NWOR offers is available from regular and aftermarket performance companies or ebay. And just about all of its exclusive products could be made by any reasonably-equipped fabricater or shop. Don't fall for it.
11-06-2011, 12:52 AM
#19
alright, that's all about 8" solid axle diffs. not even a little bit applicable.
Thanks for all the attempts guys, but the guys on Pirate came through with a bunch of tech info on 'em. And I've already bought a V6 ABS front end for the extra support bearing.
http://www.pirate4x4.com/forum/showthread.php?t=1018915
Thanks for all the attempts guys, but the guys on Pirate came through with a bunch of tech info on 'em. And I've already bought a V6 ABS front end for the extra support bearing.
http://www.pirate4x4.com/forum/showthread.php?t=1018915
Sorry man.I don't know all that much about this but I'm learning.
Mudhippy, thanks for all the useful info dude. Very informative indeed.
Hey truckmike26, do you know something I don't about NWOR? I was considering them for their rear lift springs for my 94 4Runner. You have a bad experience with them? Let me know...I'd like to hear what you have to say.
