*Updated & only kinda shitty now!* The definitive 5.0/302 swap guide

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  • jalopi
    Banned
    • Aug 2010
    • 2370

    #241
    Man I'm sorry but I have no idea. The rosehill setup got my car barely working - I had/have a slightly less worse version of what you're describing. What size master cylinder did you get?

    Comment

    • drift e302
      Member
      • Apr 2014
      • 63

      #242
      apparently it's a 7/8" bore slave cylinder.

      Weird thing is that its giving the requires amount of travel yet the clutch is still not disengaging enough to select gears when running.

      What did you end up going with?
      sigpic
      http://www.r3vlimited.com/board/showthread.php?t=322351

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      • jalopi
        Banned
        • Aug 2010
        • 2370

        #243
        Pretty sure that's my slave, I've got a 3/4" master, just wondering if you've got the same.

        I've read stuff about people having issues with the 7/8" CNC slave included in the rosehill kit. They instead use some sort of slave out of a Datsun, can't remember what kind though... maybe a 280z?

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        • drift e302
          Member
          • Apr 2014
          • 63

          #244
          oh sorry miss read that. For the master i've just got the standard e30 manual master cylinder.

          just like this:


          crazy that it's getting the right travel on the clutch fork but still not disengaging... so confused
          sigpic
          http://www.r3vlimited.com/board/showthread.php?t=322351

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          • jalopi
            Banned
            • Aug 2010
            • 2370

            #245
            Read post 2213 and newer on this thread



            I know it's not a 302 but it's a clutch, still applies. Did you check the clutch before installing? It was never on my to do list until I read Kam's thread, now it always will be.

            Comment

            • drift e302
              Member
              • Apr 2014
              • 63

              #246
              ok so a bent clutch could be the problem.

              It's an existing clutch, never had an issue before so the only way i bent it is from installation which could be possible... I'll have to try some other quick tests before i go ahead and pull out the trans as it's not a fun job!

              Thanks for the help!
              sigpic
              http://www.r3vlimited.com/board/showthread.php?t=322351

              Comment

              • drift e302
                Member
                • Apr 2014
                • 63

                #247
                So after pulling out the box and putting it back in it turns out I'm not getting enough travel for the clutch to dis engage.

                So being that i have a stock e30 clutch master which measured up as 3/4 and a slave thats 7/8'' I think thats what the problem is. I'm thinking I'll need a slave cylinder bore of around 1/2''.
                sigpic
                http://www.r3vlimited.com/board/showthread.php?t=322351

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                • Stvstr
                  Member
                  • Dec 2013
                  • 82

                  #248
                  I am using the Nissan slave. The part number is in my build thread, and it's 3/4" bore. It works well with the e30 master cylinder.

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                  • drift e302
                    Member
                    • Apr 2014
                    • 63

                    #249
                    Cheers for the advice. You have a T5 hey? I wonder how different that is to a TKO600.

                    I need about 60mm of travel for my clutch to work. currently I'm getting 30mm with a 7/8'' bore slave. If i did my maths right I believe a 1/2 should get me to that 60mm travel. or am I doing this all wrong? haha
                    sigpic
                    http://www.r3vlimited.com/board/showthread.php?t=322351

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                    • jalopi
                      Banned
                      • Aug 2010
                      • 2370

                      #250
                      i think the clutch specs (aside from the spline count) are pretty much the same between the tko and t5. the one difference that you might be having issues with is where the fork comes out of the bellhousing and how the slave will mount because of this.

                      on a t5, the clutch fork comes out of the bellhousing at about the "9'o'clock" position

                      on a tko, it's more like "7-8'o'clock", right? if the bleeder isn't pointing straight up (like it would on a t5 setup) try jacking the left (passenger?) side of your car up until it's pointing up. maybe there's some air trapped in there. worth a shot, maybe

                      Comment

                      • drift e302
                        Member
                        • Apr 2014
                        • 63

                        #251
                        yeh your right, more of a 7 o'clock position and the bleeder is on a slight angle. I'll try that and let you know the outcome. If not I'll be getting the cylinder re sleeved down to 1/2 and let you know if that helps. Hopefully Its the first as thats a free fix! =)
                        sigpic
                        http://www.r3vlimited.com/board/showthread.php?t=322351

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                        • e30_302
                          E30 Addict
                          • Sep 2013
                          • 453

                          #252
                          Do you have some preload on the clutch? I'm at about 1/4" if I recall. Clutch begins to engage at about 1/3 of the way up on the pedal. I'm using a T5 with the rose hill hydro conversion kit.
                          sigpic

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                          • jalopi
                            Banned
                            • Aug 2010
                            • 2370

                            #253
                            I think you're gonna have to get a new master cylinder, from what I remember the stock e30 one just won't cut it with the 7/8" slave.

                            Comment

                            • drift e302
                              Member
                              • Apr 2014
                              • 63

                              #254
                              prload? from what I know you want a 1/4'' clearance before the bearing engages, otherwise it will always be in use and you bearing will have a short life span.

                              As for the master cylinder, if theres not a bolt up option for a bigger master than 3/4 it's probably worth getting the slave re sleeved to 1/2. I know this will make the pedal harder but I use to be a cable clutch man =)
                              sigpic
                              http://www.r3vlimited.com/board/showthread.php?t=322351

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                              • e30_302
                                E30 Addict
                                • Sep 2013
                                • 453

                                #255
                                At least on a T5, the TO bearing is designed to be in constant contact with the pressure plate. Try about 1/8" of preload after getting to 0 preload and see how it does.
                                sigpic

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