Page 1 of 2 12 LastLast
Results 1 to 20 of 25

Thread: gearbox upgrade - RB25 vs CD009

  1. #1
    Member mathew8717's Avatar
    Join Date
    Oct 2014
    Location
    New Milton
    Posts
    957
    Rides
    0

    gearbox upgrade - RB25 vs CD009

    hi all,

    Just wondering if people have any experience with gearbox upgrades for an s14, and the two choices seem to be RB25 and CD009

    i have had a RB25 conversion waiting for a while now (box, shifter conversion plate, slave, prop) , but the price of rb gearboxes have gone through the roof, so would virtualy cover the cost of the cd009, so its tempting to get the newer box, not having to cut the shifter hole unlike the RB box and the 6spd is really appealing


    anyone have any experience with either swap?
    my build thread - http://www.sxoc.com/vbb/showthread.p...g-term-project

    I want to buy things, are you selling what i want? - http://sxoc.com/vbb/showthread.php?5...Chargspeed-SRB

  2. #2
    Guest
    Join Date
    Sep 2005
    Location
    Northamptonshire
    Posts
    20,542
    Rides
    0
    Have you considered a Giken 5 gear or 3 gear kit? 2100 landed for a 5 gear kit these days

  3. #3
    Now with 400bhp....
    Join Date
    Aug 2007
    Location
    South west
    Posts
    36,313
    Rides
    1
    Aren’t the ratings on the gilken set similar to Oem? If I was spending that much I’d want a gearbox that’ll easily handle the power.
    South west Events and local meet info. See here


    My car on THRLL: http://thrll.com/car/1998-nissan-200sx-12410
    Chris Cooke Photograpy: https://www.facebook.com/ChrisCookePhotography
    1998 Nissan 200sx s14a , 2000 std 5 speed with nismo supercoppermix clutch bn6 Sapphire Blue

  4. #4
    Guest
    Join Date
    Jan 2014
    Location
    Devon
    Posts
    325
    Rides
    0
    What power you aiming for? From being at a lot of drift days the rb box isn't all that much stronger than a stock sr, seen a lot of them in pieces, albeit generally in cars with near 400hp generally at comps when people are running super grippy tyres so may not be soo much of an issue for general use and practice days with normal tyres. Cd009 on the other hand if you get the newer version seems to be pretty indestructible. It is a MASSIVE box though so be prepared for some tunnel bashing to make it fit nice.

    Good luck either way,

    P.S. Did you sell that blue caged shell in the end?

    Cheers

  5. #5
    Guest
    Join Date
    Sep 2005
    Location
    Northamptonshire
    Posts
    20,542
    Rides
    0
    Quote Originally Posted by Chriscooke View Post
    Aren’t the ratings on the gilken set similar to Oem? If I was spending that much I’d want a gearbox that’ll easily handle the power.
    Not sure where you got that idea from but they're considerably stronger, rated to 600bhp for SR20 applications.

  6. #6
    Now with 400bhp....
    Join Date
    Aug 2007
    Location
    South west
    Posts
    36,313
    Rides
    1
    Do they upgrade the input shaft?
    South west Events and local meet info. See here


    My car on THRLL: http://thrll.com/car/1998-nissan-200sx-12410
    Chris Cooke Photograpy: https://www.facebook.com/ChrisCookePhotography
    1998 Nissan 200sx s14a , 2000 std 5 speed with nismo supercoppermix clutch bn6 Sapphire Blue

  7. #7
    Guest
    Join Date
    Sep 2005
    Location
    Northamptonshire
    Posts
    20,542
    Rides
    0
    Yep, the 5 gear kit comes with the reinforced input shaft and you can add a reinforced main shaft.

    The 3 gear kit comes with neither, but has the input as an option.

  8. #8
    Now with 400bhp....
    Join Date
    Aug 2007
    Location
    South west
    Posts
    36,313
    Rides
    1
    Nice, thanks for clearing that up mate.
    South west Events and local meet info. See here


    My car on THRLL: http://thrll.com/car/1998-nissan-200sx-12410
    Chris Cooke Photograpy: https://www.facebook.com/ChrisCookePhotography
    1998 Nissan 200sx s14a , 2000 std 5 speed with nismo supercoppermix clutch bn6 Sapphire Blue

  9. #9
    Member daveyboydave's Avatar
    Join Date
    Jul 2012
    Location
    Bristol
    Posts
    661
    Rides
    0
    Does anyone know how difficult a job it would be to fit an OS Gilken gear set? Does it need crazy specialist tools and a PHD in gearboxes?

    Given that finding decent SR gearboxes is getting more difficult, and every alternative swap option appears to have some complications (and quite a lot of expense) the OSG upgrade seems an attractive option.

    Sent from my SM-G960F using Tapatalk
    [hr][/hr]
    Chavmobile Project Thread
    [hr][/hr]

  10. #10
    Guest
    Join Date
    Sep 2005
    Location
    Northamptonshire
    Posts
    20,542
    Rides
    0
    It's a straight swap kit but you'd still need to know how a gearbox went together. Job for a transmission specialist IMO. And your donor box would need to be in good working order, unless you went for new standard parts.

    Also bear in mind, Giken kits are close ratio kits. Not standard ratios.

  11. #11
    Member daveyboydave's Avatar
    Join Date
    Jul 2012
    Location
    Bristol
    Posts
    661
    Rides
    0
    Quote Originally Posted by piman2k View Post
    It's a straight swap kit but you'd still need to know how a gearbox went together. Job for a transmission specialist IMO. And your donor box would need to be in good working order, unless you went for new standard parts.

    Also bear in mind, Giken kits are close ratio kits. Not standard ratios.
    Yes, the closer ratios would be a bonus, for my track car anyway, especially since it looks like 1-3 are shorter but 5th is actually longer geared. So faster acceleration in the gears most used on track but better cruising on the way to and from the track!

    Sent from my SM-G960F using Tapatalk
    [hr][/hr]
    Chavmobile Project Thread
    [hr][/hr]

  12. #12
    Guest
    Join Date
    Sep 2005
    Location
    Northamptonshire
    Posts
    20,542
    Rides
    0
    I’ve got all the ratios noted down for the different boxes and the Giken kit and a transmission calculator to show you what it would do to your car.

    Happy to mail it.

  13. #13
    Guest
    Join Date
    Feb 2021
    Location
    New Jersey
    Posts
    1
    Rides
    0
    Does anyone know how difficult a job it would be to fit an OS Gilken gear set? Does it need crazy specialist tools and a PHD in gearboxes?
    Also, you can get yourself a nice loan offer from a nearby lender
    Given that finding decent SR gearboxes is getting more difficult, and every alternative swap option appears to have some complications (and quite a lot of expense) the OSG upgrade seems an attractive option.

    Sent from my SM-G960F using Tapatalk
    nothing too hard
    there definitely will be some mistakes here and there but If even I could handle it you can too
    Last edited by samlar; 29-07-2021 at 07:31.

  14. #14
    Member daveyboydave's Avatar
    Join Date
    Jul 2012
    Location
    Bristol
    Posts
    661
    Rides
    0
    Quote Originally Posted by samlar View Post
    nothing too hard
    there definitely will be some mistakes here and there but If even I could handle it you can too
    I appreciate the encouragement! I think I'd wait until my box fails before going down such a big job (for me at least).

    Sent from my SM-G960F using Tapatalk
    [hr][/hr]
    Chavmobile Project Thread
    [hr][/hr]

  15. #15
    I <3 BBS LM Actual_Ben_Taylor's Avatar
    Join Date
    May 2001
    Location
    South East
    Posts
    23,604
    Rides
    0
    These days I'd be looking at a BMW gearbox with PMC adaptor.

  16. #16
    Member sx rider's Avatar
    Join Date
    Apr 2008
    Location
    West Sussex
    Posts
    2,924
    Rides
    0
    I’ve heard the BMW GS6-53DZ gearbox is possible but it’s from diesel cars so couldn’t get my heard around the ratios and if they would work with on a street car

  17. #17
    Guest
    Join Date
    Jun 2009
    Location
    walsall/tamworth
    Posts
    6,658
    Rides
    0
    the bmw boxes tend to have rubbish ratios which don't really work with R200 diff ratios, ive seen people stick 350z diffs in to help combat this.

    I was under the impression the cd09 hung down low under the car when mated to the back of an sr20 in an S-chassis.

  18. #18
    I <3 BBS LM Actual_Ben_Taylor's Avatar
    Join Date
    May 2001
    Location
    South East
    Posts
    23,604
    Rides
    0
    Quote Originally Posted by sx rider View Post
    I’ve heard the BMW GS6-53DZ gearbox is possible but it’s from diesel cars so couldn’t get my heard around the ratios and if they would work with on a street car
    Option for the Getrag 420 from an E46 M3

  19. #19
    Guest Sean-B's Avatar
    Join Date
    Sep 2010
    Location
    West Midlands
    Posts
    2,464
    Rides
    0
    Running a Z32 box here at 400lbft for around 15,000 miles of hard driving now.

    Modified the shift linkage so no cutting was required and its in stock position but around 1 to the left.

    1st and 5th are longer than the stock box which are both useful to me.

  20. #20
    Member alanjuggler's Avatar
    Join Date
    Feb 2004
    Location
    manchester
    Posts
    9,942
    Rides
    0
    I need to get under my Elgrand and see what diff it uses (I think the housing is definitely different as it has a pair of ABS sensors in there so there's definitely differences but wonder if bits can be swapped over).

    that's a 3.1ish ratio from memory, so would allow use of some odd boxes.
    white '94 s13 200sx scrapped - mapped to 1.45bar. OS giken box, garrett GT2876R, 950cc injectors, ORC twin plate, nistune. 349bhp/325lbft @ 1.3bar CA18DET
    white '96 s13 180sx - type g with more kouki bits - RB25DET, GTR steel twin turbo conversion, RB26 crank & rods. 2.6L VVT twin turbo, SR20 OSG box, OSG STR twin plate clutch, Z32 ECU w/ nistune.

    current status: 180 a bit broken but to be repaired.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •