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Blew Up the Front Dif!!!

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Old 01-04-2009, 01:33 PM
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Blew Up the Front Dif!!!

Well Ive been tryin to figure out what the problem was with my 4wd ever since i broke it on christmas day.... Finally pulled the front diff apart to find the ring gear is missing about 5 or 6 teeth so theres the problem....now heres the question what gears come factory in a 91 4runner v6 5spd? forgot to check while it was apart..... Pics of the diff later on camera is in the truck...also anyone have any idea what this will cost me?
Old 01-04-2009, 01:48 PM
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Check the axle code on the door.
Old 01-04-2009, 01:50 PM
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5sp's and some auto's came with 4.56's. I know my auto has factory 4.56's.
Old 01-04-2009, 02:09 PM
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I believe it's going to depend on what tire-size was factory...

call up a dealership with the vin; thet'll tell you everything you could possibly want to know
Old 01-04-2009, 04:18 PM
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Mine came with 4.10's stock if you need one to replce the ld one I have a full A.D.D. frm a 90 cheap
Old 01-04-2009, 04:24 PM
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Wish I had a dollar for everytime I've posted this link http://www.off-road.com/trucks4x4/ar....jsp?id=274535
Old 01-04-2009, 06:07 PM
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Thanks alot and I will check the door or call a dealer tommorow...... Pics tommorow also.....
Old 01-04-2009, 06:29 PM
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I have a 4.56 ADD IFS axle also for sale if you need it. I'm curious - what exactly were you doing when it broke? Usually the CV joints give out long before the axle can be damaged.
Old 01-04-2009, 06:33 PM
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Originally Posted by Victor
I'm curious - what exactly were you doing when it broke? Usually the CV joints give out long before the axle can be damaged.
haha, me too
Old 01-04-2009, 06:37 PM
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Originally Posted by UKMyers
Wish I had a dollar for everytime I've posted this link http://www.off-road.com/trucks4x4/ar....jsp?id=274535
Wish I had a dollar for every time I checked a chart like that and it was WRONG!
Those codes aren't worth a damn if they're not right.
I don't ever trust them, its better to check for yourself instead of assuming, throwing some parts in, and then blowing up.
Old 01-04-2009, 07:02 PM
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I have seen the chart make a mistake too.
You can get right to the gear ratio by counting the spins on the driveshaft/vs/tire. 4.x turns of the driveshaft to 1 turn on the wheel... done it several times.
Old 01-04-2009, 09:51 PM
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wish I could help, you and I are in the same boat, I'll watch and learn; my front diff has a gaping hole in it, so no 4WD for me right now
Old 01-05-2009, 07:20 AM
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you might want to check this out and see if it helps any:

http://www.toyodiy.com/parts/

lee
Old 01-05-2009, 07:40 AM
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oh wow, that link just gave me the part number for the instrument cluster bulbs/sockets I had been looking for.

Thanks!
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