Jump to content
SAU Community

rb20 manual gearbox part number?

predator
 Share

Recommended Posts

SteveL Mentor

SteveL

Posted
Posted
  predator said:
What should an RB20DET box have printed on the side? Is it RPC71C ? Also it has #2 - there are meant to be 2 revisions in r32 so its probably right.

RP71C is RB30E gearbox

RB71C is R32 gearbox

Got both of these in the garage. Another difference is that the R32 type has a lot more ribbing on the outside surface of the bellhousing.

predator Grand Master

predator

Posted
  • Author
Posted

damn.. definitely RP71C .. although it seems to have a fair bit of ribbing along the bellhousing. It also seems to have a GTS-T shifter on it, unless that has been swapped over to make it look authentic? Which ones are the earlier red top ones? Is it possible its off an early RB20?

Can somebody post a picture of one outside the car?

SteveL Mentor

SteveL

Posted
Posted
  predator said:
damn.. definitely RP71C .. although it seems to have a fair bit of ribbing along the bellhousing.  It also seems to have a GTS-T shifter on it, unless that has been swapped over to make it look authentic? Which ones are the earlier red top ones? Is it possible its off an early RB20?

Can somebody post a picture of one outside the car?

A lot of parts are interchangeable. Here's thread on SDU that shows a picture of a GTSt gearbox plus has lots of other useful info:

http://forums.skylinesdownunder.co.nz/show...hlight=5th+gear

predator Grand Master

predator

Posted
  • Author
Posted

Hmm.. thats mostly the internals though - but thanks.

Here is a shot, if this helps. It does have a fair bit of ribbing though, like I was saying. As you can tell, its been labelled RB20 box. The guy I bought it off bought it himself as an "rb20 box" off a parts place, so i don't think he was trying to rip me off, he just didn't know himself. Either way I guess $400 for either box is a decent price, so I'm not too peeved.

I have read that the proper rb20 has different synchros, and that is the main difference? Its only fairly temporary until i have the funds for an rb25 box, so as long as it doesn't self destruct I'm hoping it should be ok for 6-12months.

From another forum - not sure whether its correct.. this is why its confusing.. lots of conflicting info out there.

RP17C is the code for the smaller 5speed gearbox from the rb20, and rb30 skylines and im pretty sure vl too

its followed by a revision number #1 or #2

the RP17C nor the revision number identify the internals of the gearbox (r32 rb20 box with twin synchro 2nds and slightly different ratios, or r31 rb30 box are all RP17C)

SteveL Mentor

SteveL

Posted
Posted
  predator said:
Here is a shot, if this helps. It does have a fair bit of ribbing though, like I was saying.  As you can tell, its been labelled RB20 box. The guy I bought it off bought it himself as an "rb20 box" off a parts place, so i don't think he was trying to rip me off, he just didn't know himself.  Either way I guess $400 for either box is a decent price, so I'm not too peeved.

Looks identical to the R32 RB20DET gb I've just done a strip and check on - but it has RB71C on the side. OTOH, an original R31 Silhouete gearbox I have has RP71C on the side, plus a few others I have seen/worked on had the same.

Anyway, that gearbox is from an RB20DET powered car AFAIC - no RB30 gearbox I've seen has that amount of ribbing on the bellhousing.

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

    • GTSBoy
      R32 GTST - 600KW+ RB28/CD009 Build

      By GTSBoy · Posted

      Structured text and other high level PLC programing languages are not allowable in Functional Safety. They are very difficult to audit. My PLC stuff is almost exclusively oriented towards Burner Management Systems which are a particularly pernicious form of Safety Instrumented System, when implemented in an SPLC. Even the part of the code written to work in the non-safety logic part of the PLC, like with a Siemens S7-1500 series, still needs to be treated as if it was safety code, with access restrictions, code fingreprints and the like. And Allen Bradley can go EABODs. They ae full of shit. They have this whole lie going on where they say if you use a ControlLogix controller and its IO, and then just duplicate the IOs (ie, run in series or parallel depending on type, to try to make it "fail safe") and "use these programming styles and place these restrictions on what you do" that you can achieve SIL2. What a load of crap. They just get away with it because no-one in the US seems to understand the first thing about Functional Safety and carries on as if all they have to do is buy only SIL2 rated equipment and hey presto, it's a SIL2 system. Idiots. /rant
    • MBS206
      Magnetic Drain Plug Snapped in Half

      By MBS206 · Posted

      If you're really considering leaving it, a great question to ask is, is the magnet going to stick to the sump? The answer to the above is the same answer towards if I'd have any level of comfort leaving it... Personally, based on the cost of a motor if the magnet were to cause damage, I'd be fishing it out either way. Use the methods in here. It fit in through the plug hole, it'll come out.   PS, get a small actuatable claw for a bore scope. OR if you know a vet, they have really cool controllable scopes with hooks on the end. Supposedly they're like playing a video game. Ask if they can acquire you one of their scopes... Engine oil after all is just a different type of lube right? Will only make it easier on the next dog or cat...
    • MBS206
      R32 GTST - 600KW+ RB28/CD009 Build

      By MBS206 · Posted

      All other (Boolean) logic functions though, are just built on those blocks above. Which does give you a lot of functionality in logic. It is basing that on using thresholds with analogue signals like GTS alluded to.   Not having things like timers will make it less useful for some of the ramp up logic you'd want, and again, on Haltecs capacity specifically, I'm not across anymore what you can / can't do with different tables.   I'm assuming, with your logic you want to implement, not only do you want your timing safeties, you're wanting to be able to derive the duty cycle for your solenoid, to maintain I'm assuming 175PSi? Or are you using a standalone WMI controller to maintain the DC correct, and you just want the Haltech working out which fuelling maps you should be on?
    • MBS206
      Low oil pressure after WOT

      By MBS206 · Posted

      It doesn't seem to follow revs. Oddly it seems to follow TPS a little bit from what I can see, but with some delay a bit. IE end of the graph, when he lets off throttle fully, pressure drops a lot, then slowly builds back up, but rpm is on a nice cruisey drop off. I do agree though, it seems very electrically.
    • TurboTapin
      R32 GTST - 600KW+ RB28/CD009 Build

      By TurboTapin · Posted

      I just try to entirely stay away from ladder now unless it's something basic maintained by electricians. Even then and to your point, it mostly ends up being blocks I wrote in structured text.  PLC's are slowly going towards C, C++ and C#. I just wish Allen-Bradley would jump on the bandwagon. 
×
×
  • Create New...