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GAS - 260z RB26 Build Thread

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    GAS - 260z RB26 Build Thread

    Decided now was as good a time as any to start a build thread (since all the cool kids are doing it) to try and keep myself honest and motivated (it is not going to be quick).

    I bought the car below back in late 2006 (photos from first outing with the blokes).









    I had been casually looking at the adverts for a good year and nothing decent had come up for sale, then all of a sudden this and 260DET’s cars came up for sale at the same time. Should have bought his back then, but as we say hindsight is a . . ..

    The owner had just built an L28et engine for the car.


    I drove it like this for probably 18 months until the megasquirt computer gave up the ghost. Since I did not want to put another cheap computer back in, the car sat under the carport for 12 months while I saved for parts and worked out what to do. In all honesty I probably blamed the computer a bit too much, as the installation was probably the biggest contributor to how the car ran (it would run right sometimes then rich or lean other times.) The wiring had no screening, a lot of places where insulation was melting through due to no heatsheilding near exhaust and then there were poor solder joints covered in insulation tape.

    So at the end of 08 I put a new computer in and redid the engine loom with a fresh flying loom and all new connectors/devices, LS1 coils, deleted distributor etc. I also got the dashboard recovered, played with some electronics and put in FD RX7 seats.









    http://forums.hybridz.org/index.php/...54#entry815654


    http://forums.hybridz.org/index.php/...04#entry741304


    Ran much better with the new tune until end of 09 when I started playing with having the computer control the boost and this happened.

    Blown headgasket.


    Thought, no worries, will pull head off, take a look, replace gasket, button it all up and drive it while building a real engine for it. Was going to go all out with an L28et, larger cams, bigger turbo, head work, blah blah blah. Well when pulling it down I started to notice more and more things wrong with the engine as I went. Pistons seemed undersized in bore (bore still crosshatched but piston was wearing on skirt and piston was quite loose in bore). Little ends were really tight (rod would stand up all by itself), balancer was welded together (and welded 10 degrees off, no wonder power was down, was running 10deg less then I thought). Crank keyway/woodruff key was shot, bearings were shot blah blah blah.

    Cylinder 3 standing up






    So it was at this stage that my mates brother said “lets just chuck a RB26 in there”. T which I replied, "No, I am feeling nostalgic about the L series engine, I might just build another" (had already started buying parts). He proceeded to give me a blank stare followed with, "Let me get this right, you are nostalgic about an engine that is no longer the original displacement (2.8 instead of 2.6), is now fuel injected (all s30 were carb) and is turbo charged (all s30 were NA)".

    So at the start of 2010 I bought this.





    Got the engine sitting on mounts around April, then work stopped as I had to build a shed before my wife had our first child. Around July car was brought back to my new shed where it sat and nothing really happened for the next 6 months (had a lot of money and time spent on the shed).
    GAS 260Z RB26DET
    GAS 1600 3SGE BEAMS

    #2
    So end of 2010 and start of 2011 work started on the datsun again. I built a new transmission mount (300zx transmission with RB26 bellhousing) and crossmember (this took far to long, but I am glad I didn't rush it, because I changed my mind almost as many times as I changed my underwear and am glad with the final way I made it).

    http://forums.hybridz.org/index.php/...33#entry923033
    GAS 260Z RB26DET
    GAS 1600 3SGE BEAMS

    Comment


      #3
      And just made mk3 of the engine mounts this week. Mk1 mounts were ok, but the engine had not been lined up straight when we put it in, would have been fine as the angle was not that great, but thought I could do better. Mk2 engine mounts started last weekend and were still not good enough so spent a couple of nights last week building mk3. I am happy with how the engine sits now.











      http://www.viczcar.com/forum/index.p...ic,9250.0.html
      GAS 260Z RB26DET
      GAS 1600 3SGE BEAMS

      Comment


        #4
        So the list of big things to do now.
        - Build mount to Lower nose of diff (and change mount from below diff to above diff) by 2.5 degrees to oppose/match engine/transmission angle.
        - Get a driveshaft
        - Build an exhaust manifold
        - Build a sump, either modify the RD28 sump or the R200 sump or build a new one from scratch
        - Install my CV joint rear axles
        - Intercooler and piping
        - Radiator/fan/plumbing
        - New loom
        - Brake upgrade (thinking r32 gtr calipers with custom mount and got to find a disc to work)
        - Suspension rebuild/upgrade
        - Tear down of engine and rebuild

        Well that list should keep me off the streets for a while. Some of the big ticket items like the engine work might get put off to another build.
        GAS 260Z RB26DET
        GAS 1600 3SGE BEAMS

        Comment


          #5
          Extremely cool car.

          Did they run out of 2jzs? :D

          Comment


            #6
            Ha, yeah no 2JZs left in the country. I would have had to overnight one from Japan.
            GAS 260Z RB26DET
            GAS 1600 3SGE BEAMS

            Comment


              #7
              I do like this!

              but why didn't you go and LS1 and wrap the 260 in RX7 panels?

              Comment


                #8
                240 and 260z's = winning!

                Good luck with the project.

                Comment


                  #9
                  Those ignition leads for the ls1 coils, are they just standard ls1 leads or custom jobbies?

                  Comment


                    #10
                    Thanks guys.

                    Ignition leads were custom jobs from the below guy. They only cost $60 for the 6 of them (cheaper then my 4AGE leads from repco).
                    http://www.qldignitionleads.com/
                    GAS 260Z RB26DET
                    GAS 1600 3SGE BEAMS

                    Comment


                      #11
                      Very nice work. Are you going to paint the engine bay when you've finished converting?

                      Also the welded balancer is a work of art, i've never seen that before!
                      Originally posted by Einstein
                      The definition of insanity is repeating the same action and expecting a different result

                      Comment


                        #12
                        Cheers mate, yeah cleaning the engine bay of excess holes and painting is on the cards.

                        Also the welded balancer is a work of art, i've never seen that before!
                        I used a few different adjectives when I found that one. A few explicative adjectives.
                        GAS 260Z RB26DET
                        GAS 1600 3SGE BEAMS

                        Comment


                          #13
                          engine needs to be rotated

                          sweet though
                          Check out my shit for sale on facebook:
                          https://www.facebook.com/pages/Junk-...25870327473735

                          Comment


                            #14
                            engine needs to be rotated
                            Ha, cunt.
                            GAS 260Z RB26DET
                            GAS 1600 3SGE BEAMS

                            Comment


                              #15
                              My mates got a split pulse 6boost manifold hes selling that would fit quite nicely in there if your interested!

                              Comment

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