IFS 4.88 diff (ADD) - PA

Kaptain · 11-05-2009, 12:56 PM

$150 + Shipping > 91 ADD front diff with stock 4.88 gearing

I've never wheeled this diff as it came out of a factory 4runner. I'm located in Central PA - shipping with be around 50 - 75 bucks I presume.

The ADD diffs are desirable because it has needle bearings on the passenger side axle shaft, non-ADD diffs don't have this. You can swap your current IFS long tube to this diff to eliminate the ADD system (I've done this in the past - it's easy).

More info about these diffs below.

Thanks!

~ Kevin

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

'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.

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b4wheeler · 11-05-2009, 01:30 PM

Do you have a matching rear?????

Kaptain · 11-06-2009, 04:37 AM

Quote:

Originally Posted by b4wheeler

Do you have a matching rear?????

No, I don't - Sorry.

stormin94 · 11-06-2009, 10:44 PM

I'm interested, but shipping from PA would kill.

[N8] · 11-07-2009, 08:57 AM

Quote:

Originally Posted by stormin94

I'm interested, but shipping from PA would kill.

FWIW, I bought an IFS front diff on another forum earlier this year from a guy in CA and it cost me roughly $70 to UPS ground it to PA.

11-06-2009, 10:44 PM	#4 (permalink)
stormin94 Contributing Member Join Date: Jun 2007 Location: Lake County, CA/Sacramento Posts: 3,539	I'm interested, but shipping from PA would kill. __________________ 1994 Toyota 4Runner SR5 4X4 213,000 miles and counting 3.0 V6, 5 speed 10/15 MPG city/hwy(with 33's) Current Mods Headers, 2.5" Flowmaster custom exhaust, K&N FIPK KC Daylighter 100 Watt lights Ranchos x4, 2" Lift Downey coils 33-12.50 M/T's, 1" t-bar lift, 1" body lift Tow pkg w/ lighthookups Silverstar Headlights, Pioneer Deck w/XM Brushguard 250Watt JLAudio 8" W3 Sub Future Mods 12V Aux outlet-400/800peak inverter roof basket/lights Air locker 4.88 gears H.O. Alternator

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11-05-2009, 01:30 PM	#2 (permalink)
b4wheeler Registered User Join Date: Apr 2006 Location: Pasadena, Md Posts: 94	Do you have a matching rear?????