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  • Full-Race R14.2 build thread

    Hi everyone, it's been about 1 year since our last update on my R14 (AWD-RB26 swapped S14 240SX). We got that car pretty well developed but its at the point where it cant go too much farther and still be a "Street car". I've been so busy with the BorgWarner EFR turbocharger development that there's been no time to work on my personal projects... so ive been itching to build a dedicated ultra-lightweight track prepped race car to see what Full-Race and this R14 swap is really capable of. This thread will document that journey with photos and info. The biggest initial hurdle is to retain a full 240sx chassis, and move the engine back 7" using a lightly modified off-the-shelf R14 kit.



    The next challenge to design a front suspension that will provide improved performance and be much less weight than modified skyline front suspension:



    Our target is to be on the track, next Feb/March 2012. please leave comments and let us know what you think!
    __________________________________________________ __________________

    1) we started by organizing all the parts required for the build:


    ^^donor R32 GTR clip, purchased for $3800 on ebay


    ^^complete R32 GTR rear suspension with factory LSD and ATESSA pump, included with the clip


    ^^R14 conversion kit frame rails


    ^^R14 transmission mount


    ^^^the crossmembers and suspensions disassembled from the R32 GTR clip, ready for a lookover and installation into R14.2


    ^^^base model S14 (no sunroof) stripped down completely shell stripped


    ^^^placed on rotisserie

    2) Before we start we needed to know how far back can the RB26 move without losing AWD? This will provide proof of concept for the vehicle and also allow us to identify the exact location for the engine/transmission


    ^^^first we needed to cut the RB26 Front differential/oilpan combo down to length. Fortunately Full-Race has some GIANT bandsaws here for cutting our thickwall merge collectors before CNC machining. The entire RB26 diff fit perfectly


    ^^^next, we did a test fit on the shortened front diff moved 6.75" forwards


    ^^^what it will look like in the car

    3) Next we prep the chassis. I have built many cars of the years, and the worst part is always prepping the chassis. Removing sound deadening, undercoating, rust protection etc is dirty and laborious. I considered acid-dipping this chassis, but heard many horror stories of cars that continue to leak acid from the seam sealer for many months after the has already come back from paint. My good friend Andrew Wojteczko from Auto Analyzer in Canada suggested to media blast the chassis - so we took it to "The Stripping Shop" in Phoenix, AZ. these guys had the entire chassis immaculate and ready for fabrication.



    ^^S14 chassis stripped of all paint, undercoating and sound deadening. Ready for installation of R14 kit.


    ^^R14 conversion kit frame rails


    ^^R14 conversion kit frame rails installed on passenger side


    ^^R14 conversion kit frame rails installed on drivers side


    ^^R14 conversion kit frame rails installed, verifying alignment with stock subframe bolts


    ^^R14 conversion kit frame rails installed, alignment verified



    ^^punch alignment marks to guide drillbit


    ^^start drilling new subframe bolt holes, a 1/2" unibit drillbit and a good quality 1/2" high-speed-steel drillbit is your best friend here


    ^^checking GT-R subframe fitment


    ^^clamping down R14-LHD steering rack


    ^^R14-LHD steering rack installed


    ^^trans mount test fitted


    ^^R14 kit installed, ready for engine mockup



    4) Next we have to make clearance for the engine/transmission from the firewall and trans tunnel. We decided that we want this swap to come out factory, so the only way to do that was to surgically remove the entire firewall/floor from the GTR-Clip we had here, and graft that into the S14 chassis, except moved back 7".



    ^^we cut up the remains of the gtr clip, carefully removing the floor, firewall and trans tunnel. We cut much more than we actually needed initially, to make sure that what we did need would be intact


    ^^^next we cut up the S14 with fresh R14 conversion, to remove the firewall and transmission tunnel


    ^^^smallish S14 tunnel compared to giant hulking R32 floor, will make working on the car MUCH easier, especially now that we have a getrag 6 speed trans form an r34 gt-r

    5) Now it is time to get the motor in it's new home, 7" back. I believe very strongly in clean swaps, so I wanted to do this as OEM factory as possible. We used the stock motor mounts and stock motor mount bracket, just relocated the point:


    ^^ OEM skyline motor mount and bracket VS the new 7" back position. you can see the stock GT-R mount point on the right, and the Full-Race fabricated mount point on the left.


    ^^engine getting dropped into place



    ^^fabricated passenger side bracket, had to do this to clear differential



    ^^GTR floor in place before getting prepped for installation


    ^^another view of how far back this engine now sits
    Last edited by Full-Race Geoff; 04-15-2011, 03:43 PM.

  • #2
    6) Front suspension is a critical element for GT-R's. The stock R32 nissan suspension works, and is simple but is not lightweight, and can not give high performance at very low ride heights. The R33/R34 suspension was vastly improved over R32, however it still is not light enough nor does it follow the exact path that we are looking for. the following pictures help explain this better


    ^^stock R32 GT-R front susp


    ^^stock R32 GT-R + R34 GT-R front spindles


    ^^R14 front susp, basically the same as stock R32 GT-R


    ^^^another R14 we built, and a different view


    ^^^basic idea for new suspension setup. Still using stock GTR lower control arm, spindle/hub and brakes


    ^^GT-R spindle, with upper section removed


    ^^GT-R spindle next to new spherical bearing


    ^^GT-R spindle lug machined down to accept spherical bearing


    ^^GT-R spindle w/ spherical bearing inserted on lug


    this is where we stand on this, lots more work to come this weekend/next week

    7) Once the firewall is contructed and chassis is rolling, we will send it to Get Nuts Labs in Las Vegas, NV for rollcage and chassis stiffening. some of their work:







    and some others i really like:





    we will take a hybrid of these photos and make sure it is very lightweight, stiff and most importantly SAFE for our driver. Lots of pics to come of this soon.



    here she is loaded up on the trailer, heading to Forrest Wang @ Get Nuts Labs in Las Vegas. many pics to come upon her arrival!

    8) DCCD Pro -- most people on this forum dont care about subaru swaps, but anyone who does a late model STi swap into an old skool subaru will require some way to control the center differential (torque split). The R14 swap is no different. I came up with a clever solution which allows us to tweak torque split based off of hydraulic pressure. The problem with this is that it is not as responsive to changing conditions as an active g-sensor system. As a result i started to research what STi enthusiasts do and how to get around this hurdle... that's when i stumbled upon DCCDpro.com and met Jeff Reid, the owner.



    FAQ: http://dccdpro.com/main/?page_id=3
    install details: http://dccdpro.com/main/wp-content/d...DPro%20UNI.pdf
    online store page: http://dccdpro.com/zcart/index.php?m...8ab8b2d7334966

    I sent a test rig to jeff which he could hook up on his laboratory bench and experiment with:



    and after several months of experimentation jeff has the system functioning perfectly. He will make a few small tweaks before sending me the formal prototype but we are well on our way to having a mappable and functional active-center-differential.

    thanks for reading, feel free to post up feedback/ideas. btw - my front suspension project will be done for 2wd S-chassis also
    Last edited by Full-Race Geoff; 04-26-2011, 04:00 PM.

    Comment


    • #3
      Sick.


      So for my own cliff notes... Same concept as the old car, but fresh shell / clip, relocated engine, custom front spindles and upper arms, actively mapped center diff, + whatever else you have yet to share?


      This is destined to be a RedlineTA car right?

      How many R14 kits have you guys put out there so far?
      '95 240sx

      Comment


      • #4
        Looking brutal Geoff!

        Comment


        • #5
          This has potential. Have you looked at the JGTC r32/s15 for suspension ideas? There's some pics here: http://nissanroadracing.com/showthre...?t=2306&page=7
          My Blog | Unfriendly Garage | Endurance Motorsports

          Comment


          • #6
            Originally posted by PerilousActs View Post
            This has potential. Have you looked at the JGTC r32/s15 for suspension ideas? There's some pics here: http://nissanroadracing.com/showthre...?t=2306&page=7
            THANK YOU - i already had some of those pics saved, but not nearly as many or as high quality as what youve posted up. That really helps keep me going tonite, much appreciated.


            Originally posted by kognition View Post
            Looking brutal Geoff!
            just wait until the Kognition wing is on it

            Originally posted by Sleepy_Steve View Post
            Sick. So for my own cliff notes... Same concept as the old car, but fresh shell / clip, relocated engine, custom front spindles and upper arms, actively mapped center diff, + whatever else you have yet to share? This is destined to be a RedlineTA car right? How many R14 kits have you guys put out there so far?
            Yes - same concept as old car, but improved in every weakness we could identify. The areas you listed are certainly part and parcel to the build, but there is a lot obviously that we will change. everything from engine mgt to gauges to interior, cage design, fuel cell instead of fuel tank, electric p/s, etc. Full-Race has changed a lot since 2005, when i started the first R14, and this build is more representative of where we are at today. We have built (6) R14's here at Full-Race and sold (4) kits which the end user installed. I can post some pics of our customer's cars if you are interested to see

            Comment


            • #7
              What electric ps setup are you guys going with?
              My Blog | Unfriendly Garage | Endurance Motorsports

              Comment


              • #8
                my trunk is going to look like the delorean from back to the future.. mr2 electric p/s pump, diff cooler pump, atessa pump, dry sump tank, transfer case cooler pump, 2 bosch 044 fuel pumps, surge tank, fuel cell, fuel filters..

                Comment


                • #9
                  I pretty much hate you,,, Im not sure there's alot we could do to remedy that at this point either

                  Looking Sexy let me know where I should steal it from OK!!!
                  I am SKULLWORKS

                  Comment


                  • #10
                    Very nice, I look forward to seeing it develop.

                    Comment


                    • #11
                      what do you gain with the fuel cell instead of tank? Just lighter than the stock tank?

                      Looks an awesome build, really good attention to detail and simplicity, can't wait to see if progress... great work!

                      Comment


                      • #12
                        Originally posted by Jonty View Post
                        what do you gain with the fuel cell instead of tank? Just lighter than the stock tank?

                        Looks an awesome build, really good attention to detail and simplicity, can't wait to see if progress... great work!
                        Safety and a lot of cells are foam filled to prevent sloshing.
                        My Blog | Unfriendly Garage | Endurance Motorsports

                        Comment


                        • #13
                          damn........

                          Comment


                          • #14
                            Wow I thought the regular r14 was badass. Now I am just speechless...

                            Comment


                            • #15
                              Originally posted by PerilousActs View Post
                              Safety and a lot of cells are foam filled to prevent sloshing.
                              I've never heard of anyone splitting a standard tank in an accident, but I understand the pickup problems- however does a swirlpot not eliminate this anyway? Interested to learn on this, as I've always thought is seemed a bit odd to put a new tank higher up and outside of the wheelbase when the standard location is about as good as you can get for CofG position and is possibly worth just as much as a bit of weight saving that an ally tank would give.

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