4.4FD vs 4.785FD

Discussion in 'Transmission' started by KRISTAPS, Mar 20, 2017.

  1. KRISTAPS

    KRISTAPS Member

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    Hello! Spring is coming and i am thinking about final drives. Now i have S80 J4D 4.4FD Spec96 LSD gearbox. All time i am thinking about searching and instaling 4.785FD from 98spec ITR. But all time i am thinking if can feel difference and how short it would be! Maybe somebody can give your opinion about this thing. Thanks! :)
     
  2. Ajza-k

    Ajza-k EJ9 B18C6

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    It's the best OEM upgrade you can do mate, it's fantastic.
     
  3. KRISTAPS

    KRISTAPS Member

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    OO okey! I readed that it is the best OEM gearbox and the shortest too! Just interest me how much rpm are on 60mph or 100km/h in 5th gear? :) And one more thing are that i am looking on Mfactory Final Drive, because i have been looked on DC2 ITR OEM 4.785FD kit, but havent seen that somebody sell it! ;) Thanks! :)
     
  4. KRISTAPS

    KRISTAPS Member

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    What you say, which one is better OEM 4.785 or Mfactory 4.71 Final Drive? :)
     
  5. elchunk

    elchunk KCCO VIP Member

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    shouldn't be any real difference between the oem 4.785 and the m factory 4.7 FD. depends which is easier to get and what condition its in. I've used a 4.928 FD in the past and now have a Mfactory 4.7 FD in my ek9, much better to drive than the standard 4.4 FD.
     
  6. rvm

    rvm admin Staff Member

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    Its a must do upgrade for any b16b motor.
     
  7. rvm

    rvm admin Staff Member

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    I prefer oem.
     
  8. KRISTAPS

    KRISTAPS Member

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    Yes, but how i have searched, OEM is very hard to find and as many told me that the same as Mfactory new! ;)
     
  9. KRISTAPS

    KRISTAPS Member

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    OO, then can take any who can better get! And as i look OEM is hard to find, and if can find then it costs as much as Mfactory new! ;)
     
  10. jugbugz

    jugbugz 1998 EK9 CTR Donator

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    You won't notice much with 4.7

    If you're going for the simple budget route of upgrading your gearset, go for 4.9.

    For the effort, it's either you go for a 4.9fd or a shorter gearset kit.

    Great time to put new synchros in as well.
     
  11. Ajza-k

    Ajza-k EJ9 B18C6

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    Depends, you can find a breaking UK spec 98 Integra and buy the FD or as above post but the 4.9 FD, it a better upgrade for track days :)
     
  12. jamie-gings

    jamie-gings Member

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    After having both in my eg9 i would recommend a 4.7 fd over a 4.9fd. the 4.9 was overkill , very bad for everyday driving.

    if your thinking of gettin an oem 98 spec box, get an s4c 4th gear for it and leave 5th standard for motorway.

    if your box is good tho youd be better off just get an mfactory 4.7 and fitting it to your current box
     
  13. KRISTAPS

    KRISTAPS Member

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    Okey, big thanks to you! ;) My box is good, that,s why i thinked what beter to install, OEM 4.785FD or Mfactory! :) But as i search, OEM is almost impossible to get! ;) Better if all gearbox! :)
     
  14. jugbugz

    jugbugz 1998 EK9 CTR Donator

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    I remember the difference between 4.7 and 4.9 @ 100kmph in 5th gear is only 300rpms. It was 3700rpm @ 100kmph. Acceleration was nice when you had to overtake over 100kmph.
     

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