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Thread: F series R&P from IFS 4runner in live axle housing?

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    Forum Sponsor Carport Converter TurboRA28's Avatar
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    Default F series R&P from IFS 4runner in live axle housing?

    Hello, i'm chasing a new ring and pinion gear for my MK11 corona F series diff.

    The only brand new ones I can find are from Motive Gears & Yukon in the states.

    The gears are made for IFS 4runners which have a F series 7.5" diff. They claim that they also fit RWD supra's IRS and RWD live axle 'trucks'.

    I just want to know if anyone can confirm that the IFS/IRS ring & pinions can fit into the live axle housings?

    Don't really want to fork out the money to get them sent over and then find they are a nonfit.

    http://www.motivegear.com/
    http://www.yukongear.com

    CHeers
    Joel
    1977 RA28 Celica - 1MZ-FE Members Rides
    1996 FZJ80 Landcruiser.
    Email : [email protected]

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    jzx100 fan boy Domestic Engineer slide86's Avatar
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    Default Re: F series R&P from IFS 4runner in live axle housing?

    have you checked this out.

    http://www.toymods.net/forums/showthread.php?t=6838

    apparently an F crown wheel and pinion will fit into any sort of F series housing. looks like you may be ok.
    Quote Originally Posted by The Witzl
    Please visit here, they will have all the answers you need for this "conversion" - www.hot4s.com.au

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    Junior Member Domestic Engineer BigWorm's Avatar
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    Default Re: F series R&P from IFS 4runner in live axle housing?


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    Default Re: F series R&P from IFS 4runner in live axle housing?

    Thanks guys.. I've sent an email off to those places to see if they have any ideas.

    Seems so easy to get 7.5" IFS gears for 4runners, on ebay and all these websites.. But yeah just need that confirmation that it can fit into a live axle.

    I am confident the ring gear would be interchangeable, but thought the pinion could be different in a IFS/IRS setup.
    1977 RA28 Celica - 1MZ-FE Members Rides
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    Former User Conversion King Joshstix's Avatar
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    Default Re: F series R&P from IFS 4runner in live axle housing?

    The rear end in Rod's MS53 is a MA61 IRS LSD centre in a MS112 solid housing.

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    Default Re: F series R&P from IFS 4runner in live axle housing?

    Yeah the IRS centres are interchangable without a doubt.. As I have a torsen centre in mine that fits the live axle, 4runner IFS, supra IRS, etc.

    But gears?
    1977 RA28 Celica - 1MZ-FE Members Rides
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    Former User Conversion King Joshstix's Avatar
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    Default Re: F series R&P from IFS 4runner in live axle housing?

    Yeah, sorry dude I didn't read the thread as thorougly as I should have. I'm sure there is someone around with a set of "used" gears from an IRS F series that could let you test fit them to your centre. It's a pain to have to pull it down before you know you have the replacement parts but if you get it done while the car is down for the intake manifold that shouldn't be too bad.

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    Forum Sponsor Carport Converter TurboRA28's Avatar
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    Default Re: F series R&P from IFS 4runner in live axle housing?

    Yeah my thoughts exactly mate.. The inlet manifold is with the welder now but he has a huge backlog of work and as mine is more a 'favour' it'll be on the bottom of the priority pile..

    So figure i might as well rip the diff out and rebuild it.
    1977 RA28 Celica - 1MZ-FE Members Rides
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    Default Re: F series R&P from IFS 4runner in live axle housing?

    Quote Originally Posted by TurboRA28
    Thanks guys.. I've sent an email off to those places to see if they have any ideas.

    Seems so easy to get 7.5" IFS gears for 4runners, on ebay and all these websites.. But yeah just need that confirmation that it can fit into a live axle.

    I am confident the ring gear would be interchangeable, but thought the pinion could be different in a IFS/IRS setup.

    Both of those sites use the same source... Precision Gear, be best to actually talk to the foks who make them....
    http://www.precisiongear.com/toy712.htm

    These are the gears that are for the reverse cut IFS, i.e, the ones you DON'T want...
    http://www.precisiongear.com/toy712t.htm

    .

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    Default Re: F series R&P from IFS 4runner in live axle housing?

    Just out of interest.. Does anyone know what the quality is like of these replacement gears?

    Seems there is a choice between Motive, Yukon, Superior, Richmond, Precision?
    1977 RA28 Celica - 1MZ-FE Members Rides
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    Default Re: F series R&P from IFS 4runner in live axle housing?

    I've only had experience with Precision Gear... they make mission critical parts for avaiton and defense contracts. Pretty darn good quality, IMHO.


    Regardless of whom you buy, proper set-up of the R&P is really going to make or break it

  12. #12
    Junior Member Automotive Encyclopaedia
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    Default Re: F series R&P from IFS 4runner in live axle housing?

    if you need a crown wheel and pinion can get them for about 450 aussie but only 4.5 and 4.8 from memory ,what ratio are you after joel

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    Default Re: F series R&P from IFS 4runner in live axle housing?

    Hey all, well I had a chat to Yukon and it seems their R&P do fit the lixe axle 7.5" diff. In the US there is some 2WD 4runner type truck that uses a 7.5" gears. So i've ordered a set of 4.1:1 gears.. $350 aus delivered express post.

    Fingers crossed they work.

    Cheers
    Joel
    1977 RA28 Celica - 1MZ-FE Members Rides
    1996 FZJ80 Landcruiser.
    Email : [email protected]

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    Plumber Automotive Encyclopaedia Robbos_Toyotas's Avatar
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    Default Re: F series R&P from IFS 4runner in live axle housing?

    i thought the 4 runner was g series..8" :?

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    Default Re: F series R&P from IFS 4runner in live axle housing?

    Most are, but there is a 2wd model it seems in the states that used a 7.5" rear end. Also the same R&P suposedly fits supras, IFS 4runners..
    1977 RA28 Celica - 1MZ-FE Members Rides
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