Jump to content
SAU Community

Wtf Is Wrong! ! Lol Rb25 Gearbox Into R32

jvc89
 Share

Recommended Posts

jvc89 Apprentice

jvc89

Posted
Posted

Hey all .

Ok now so i finally decided to do the upgrade on my 32 and shove a 25 box in . So i got the box all mounted up and my short shifter all bolted in and selected everygear perfect. So i then put all the custom tailshaft and ect on then started it up to find i cant selct gear while cars running? Flywheel was remachined and clutch was only 10000kms old threw a new thrust bearing in and changed over slave . The fork isnt cracked and the slave does move the fork a good distance . Wtf is going on?

blind_elk Grand Master

blind_elk

Posted
Posted

Without the engine running, you will always be able to select gears, even without using the clutch.

Simple answer is that the clutch isn't disengaging the engine from the gearbox. I suspect that the RB20 pressure plate isn't as tall as a RB25 plate, or the thrust bearing carrier is too short for the combo you have.

Can you determine how much free play you have at the fork?

You will probably have to remove the gearbox and do some measurements on the clutch assembly and the thrust bearing motion to determine what is (not) happening.

Spurdo Experienced

Spurdo

Posted
Posted

pressure plates should be the same, as aftermarket kits for these always say they will fit both rb20det or rb25det.

one of my mates had the exact same thing happen after we installed a new clutch and short shifter on his r32 about 5 years ago, i could be wrong but i think we just had to make an adjustment at the master cylinder.. or maybe the one behind the clutch pedal.. i cant remember which one exactly.

bubba Grand Master

bubba

Posted
Posted

Adjust the rod at the top of the pedal..

The only time you will have serious issues is with multiplate clutches and getting the correct bearing/carrier size.

I'm going to assume you bled the system properly after changing slaves?

dysonest Rising Star

dysonest

Posted
Posted

this might be silly, but did you check you had the clutch plate facing the right way?

would be difficult to bolt the pressure plate on if this was the case...

fly wheel bolts too long and touching the clutch plate ?? although u would think the flywheels would be similar in thickness

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

    • Ozdavroz
      New to R32 ownership

      By Ozdavroz · Posted

      Very nice - I also have a 92 GTST and hardly see any others around these days
    • xmanz
      Video Edit Programs

      By xmanz · Posted

      When I need something else to edit, I use Movavi. A friend who does video editing on a daily basis recommended me) it's an easy video cutter to use for beginners
    • Skidmore
      Video Edit Programs

      By Skidmore · Posted

      I need to edit some videos for work but I'm not good at all this. Which video editor can you recommend?
    • GTSBoy
      HY51 Fuga Hybrid

      By GTSBoy · Posted

      I think you're really missing the point. The spec is just the minimum spec that the fuel has to meet. The additive packages can, and do, go above that minimum if the fuel brand feels they need/want to. And so you get BP Ultimate or Shell Ultra (or whatever they call it) making promises to clean your engine better than the standard stuff....simply because they do actually put better additive packages in there. They do not waste special sauce on the plebian fuel if they can avoid it. I didn't say "energy density". I just said "density". That's right, the specific gravity (if you want to use a really shit old imperial description for mass per unit volume). The density being higher indicates a number of things, from reduces oxygen content, to increased numbers of double bonds or cyclic components. That then just happens to flow on to the calorific value on a volume basis being correspondingly higher. The calorific value on a mass basis barely changes, because almost all hydrocarbon materials have a very similar CV per kg. But whatever - the end result is that you do get a bit more energy per litre, which helps to offset some of the sting of the massive price bump over 91. I can go you one better than "I used to work at a fuel station". I had uni lecturers who worked at the Pt Stanvac refinery (at the time they were lecturing, as industry specialist lecturers) who were quite candid about the business. And granted, that was 30+ years ago, and you might note that I have stated above that I think the industry has since collected together near the bottom (quite like ISPs, when you think about it). Oh, did I mention that I am quite literally a combustion engineer? I'm designing (well, actually, trying to avoid designing and trying to make the junior engineer do it) a heavy fuel oil firing system for a cement plant in fricking Iraq, this week. Last week it was natural gas fired this-that. The week before it was LPG fired anode furnaces for a copper smelter (well, the burners for them, not the actual furnaces, which are just big dumb steel). I'm kinda all over fuels.
    • LjB123
      RB25 Crankshaft Differences

      By LjB123 · Posted

      Well my freshly rebuilt RB25DET Neo went bang 1000kms in, completely fried big end bearing in cylinder 1 so bad my engine seized. No knocking or oil pressure issue prior to this happening, all happened within less than a second. Had Nitto oil pump, 8L baffled sump, head drain, oil restrictors, the lot put in to prevent me spinning a bearing like i did to need the rebuild. Mechanic that looked after the works has no idea what caused it. Reckoned it may have been bearing clearance wrong in cylinder 1 we have no idea. Machinist who did the work reckoned it was something on the mechanic. Anyway thats between them, i had no part in it, just paid the money Curiosity question, does the oil system on RB’s go sump > oil pump > filter > around engine? If so, if you had a leak on an oil filter relocation plate, say sump > oil pump > filter > LEAK > around engine would this cause a low oil pressure reading if the sensors was before the filter?   TIA
×
×
  • Create New...