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 ADD front end swap
#914919
11/08/08 09:52 PM
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Joined: Apr 2001
Posts: 53
OP
Getting the Wheeling Fever
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CAn you swap a ADD unit for a regular axle tube axle and tube? I have manual hubs. I thought I say a post for it before but can not find it.
84 4-runner 529 & Locked
86 4-runner
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Re: ADD front end swap
[Re: Toy529]
#914921
11/09/08 05:07 AM
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Joined: Apr 2000
Posts: 4,230
Roll Me Over
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CAn you swap a ADD unit for a regular axle tube axle and tube? I have manual hubs. I thought I say a post for it before but can not find it. Yes, do not forget to plug off the vacuum lines.
David Fritzsche
1990 Ex-Cab V-6,5-speed, with a few mods
04.5 CTD Dodge 2500 Ram--Tow Rig
Roseville, CA
"Serenity through Sobriety"
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Re: ADD front end swap
[Re: Toy529]
#914922
11/10/08 01:49 PM
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Joined: Jan 2000
Posts: 454
Mudrunner
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I did it and the swop makes for a clean & sound system.
However if I had to do it over again, i'd look hard at a full time locker option, and a switch to turn the actuator/shaft on / off. Would make it the operate like an elec / arb.
Last edited by Toy4x; 11/10/08 08:18 PM.
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Re: ADD front end swap
[Re: Toy4x]
#914923
11/10/08 05:23 PM
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Joined: Apr 2000
Posts: 4,230
Roll Me Over
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I did it and the swop makes for a clean & sound system.
However if I had to do it over again, i'd look hard at a full time locker option and a switch to turn it on / off. Would make it the operate like an elec / arb. That would not make it a locker; it would still work on the Differential action of one or the other wheel driving. Unless it has an LSD or locker, the wheel with the least traction will spin. A four wheel drive without lockers or LSD is actually only two wheel drive, one in front one in back hence the reason for LSDs, lockers, spools, or welded.
David Fritzsche
1990 Ex-Cab V-6,5-speed, with a few mods
04.5 CTD Dodge 2500 Ram--Tow Rig
Roseville, CA
"Serenity through Sobriety"
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Re: ADD front end swap
[Re: Toy529]
#914924
11/10/08 07:31 PM
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Joined: Nov 2000
Posts: 301
Mudrunner
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Yes, just did one a few weeks ago. You will need to get a seal for the centre section where the non-ADD tube bolts on. You will also need a slide hammer to pull the axle out of the centre section as there is a spring-type ring in a groove in the axle that mates with a groove in the diff.
1989 4Runner Special Edition 22RE, 5-spd. TG 3" SAS, MC DuaLs, 4.56s, Air Locker Hi-Clearance panels by www.toyotafiberglass.com
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Re: ADD front end swap
[Re: OOP'S]
#914925
11/10/08 08:25 PM
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Joined: Jan 2000
Posts: 454
Mudrunner
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my comment was based on upgrading the differential.
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Re: ADD front end swap
[Re: Toy4x]
#914926
11/10/08 08:36 PM
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Joined: Nov 2000
Posts: 301
Mudrunner
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Does the ADD introduce any mechanical weakness to the axle that is not there in a non-ADD axle? I was not thinking of actuators, vacuum lines, etc., just the actual drive system.
1989 4Runner Special Edition 22RE, 5-spd. TG 3" SAS, MC DuaLs, 4.56s, Air Locker Hi-Clearance panels by www.toyotafiberglass.com
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Re: ADD front end swap
[Re: Pyroboy]
#914927
11/10/08 09:03 PM
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Joined: Mar 2004
Posts: 514
Rock Warrior
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Does the ADD introduce any mechanical weakness to the axle that is not there in a non-ADD axle? I was not thinking of actuators, vacuum lines, etc., just the actual drive system. When I had mine apart, the ADD shaft was smaller than the non-ADD unit. I'm thinking the non-add is the stronger setup of the two.
Fur clog in the sausage grinder
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Re: ADD front end swap
[Re: grandeyota]
#914928
11/10/08 11:06 PM
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Joined: Sep 2005
Posts: 970
Rock Warrior
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It seems to me that the easiest route would be to just get a complete non-ADD third assemebly and change the whole thing, then all you have to do is replace the hubs and block off the engine vacuum lines. Granted, you have to acquire the assembly, but they can be found at junkyards for $125 or so, complete.
With 200+ Billion electrical parts, the world most complicated machine is inside your own skull.
Question Reality.
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'89 Rnr DLX "SR4.5", 32s w/ 5.29 locked f/r blah blah
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