Jump to content
SAU Community

Has Any One Removed The Insides Of Their Diff?

Japtastic-UK
 Share

Recommended Posts

Japtastic-UK Enthusiast

Japtastic-UK

Posted
Posted

Need to know how it is done as I am in the middle of changing mine at the moment but can't get the damn thing out, I have removed everyting including the 4 bolts you see in this picture, can any one give me a clue of how to get the main unit out?

R33 GTST btw

Cheers

post-14541-1123973148.jpg

datsqik Enthusiast

datsqik

Posted
Posted

If you have removed the 4 bolts then you need to pull the bearing caps out.You may need to give them a tap with a copper/plastic hammer and mark which side they came from.The centre can now be removed,sometimes these can be pull out by hand or you may have to use a long screw driver to lever it up on each side if it is tight.Remember these have shims on either side and need to go back in the same way and so do the bearings unless you replacing the bearings or the centre or adjusting the tooth mesh/backlash.

SteveL Mentor

SteveL

Posted
Posted

It should pull straight out of the housing with the caps removed. Sometimes the shims can be tight and that makes things a bit more difficult, but in those cases tapping on the side of the crownwheel (ie opposite side to teeth face) with a rubber or plastic mallet will usually free it up. The parts you mention that are loose are the spacers and shims for setting up CWP relationship.

Datsqik is on the money - make sure you mark everything and keep it all in the same relationship for re-assembly. If your changing the centre and/or the CWP the shims will almost certainly need changing, but it's rare for the bearings to give trouble (mind you, if it were me and I was changing the centre and CWP for something new, I'd have a tendency to change the bearings - esp if this was for a high HP app).

I'm probably seeing things, but that's not sealant I'm seeing around the bearing bolt holes, is it ??

Japtastic-UK Enthusiast

Japtastic-UK

Posted
  • Author
Posted

No sealant where it shouldn't be.

I'm swaping an manual diff for an auto one, found one cheap and it will be good for the drag strip becuase the ratios are different, the casing is only 1cm longer so hopefully this won't cause a problem, the prop shaft moves loads any way.

Can't shift either of the guts from either unit out though.

The new auto diff didn't come with the driveshaft flanges so I was in the process of just swapping them over but they are either different or the sir clip was bent as when one went in it got stuck and won't go fully in and now it won't come out whatever I do, so I think the only option is to take it to the local transmissions shop to see if they can shift the bugger!

What a nightmare!

  • 1 month later...
Packy Collaborator

Packy

Posted
Posted

hmmm good someone else is doing this diff opening too.

I've got a 2way Kaaz waiting to go in. I'm a step before though, i still have the half shafts in the diff, how do you remove them???? I've got the bearing caps out, just can't figure out how to get the shafts out of the centre itself??? Any help guys???

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • blind_elk
      Wheel refurb?

      By blind_elk · Posted

      The powder coating came in at $250 EACH. The TRX rims got a coat of clearcoat on the outside only.    
    • The Bogan
      NC MX5

      By The Bogan · Posted

      Bit wet, but YUMMY
    • GTSBoy
      Pops when backing off throttle, rough-ish sound through rev range.

      By GTSBoy · Posted

      Keeping in mind that I am currently getting flat 10 L/100km on my RB25DET, which means >>500km/tank. I would test this car for vacuum leaks, check codes and AFM signal with NissDataScan as D says, check plugs, do a compression check while they are out.
    • Duncan
      Pops when backing off throttle, rough-ish sound through rev range.

      By Duncan · Posted

      It is hard to be specific half way across the world...but it *seems* like it might have a minor issue. Is the idle stable and does it rev smoothly? I would not expect any pops out of what I am assuming is a standard ECU, standard tune, standard exhaust. You can use Nissan Data Scan to find out exactly what is happening when it runs, the cable/software is reasonably affordable if you are not planning on changing the ECU (which hopefully you are not with an NA skyline) BTW your mileage may not be that far off, these are heavy old tech cars, and being NA might mean you use a heavy foot to keep up with traffic....
    • AdiR34
      Pops when backing off throttle, rough-ish sound through rev range.

      By AdiR34 · Posted

      Hey guys! Y'all are the masters so figured I'd check in on a few items here. - My engine sounds ever-so-slightly more raspy than the other NA RB25s I've listened to. It's barely noticeable but definitely a slightly different sound. - When I back off the throttle at high RPM, I will sometimes get a pop out of the exhaust, assuming this can be diagnosed as misfire. Some history on the car: - Had an exhaust leak in auction sheet but was claimed to be fixed by seller (bought from USA importer).  - Car's coil packs and sparks were replaced when it was sold to me, but unsure on what the gap is and whether the coil packs are correct.  - A prior mechanic had misdiagnosed a pilot or throwout bearing sound as LSPI/detonation. Had played with timing a bit, pops/raspy sound of engine just got worse. Got timing reset. - Had failed emissions a few times. First time went in as is, failed. Second time, replaced cat, still failed, running rich as hell. Third time replaced o2 sensor, passed. Car still smells gassy though. - Timing belt and valve cover gasket also replaced.  - Gas mileage is... low. about 350-400K per tank.  Any idea if I'm having any serious issues here or does this all sound like normal old NA RB stuff and I'm fine to drive it with the pops/slightly raspy engine? If it'll help, I can get drop a video of the sound of the engine.
×
×
  • Create New...