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Thread: BEAVIS' White NB Turbo Track Car

  1. #1
    MX-5 Hairdresser bbeavis's Avatar
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    Cool BEAVIS' White NB Turbo Track Car

    Hi,

    So over the last 6 years or so I've had 7 MX-5's. Three of those have been track cars.
    I've had this particular NB for the longest, about 3 years now.
    And while it has been a great, reliable and capable track car, there comes a time in a little boys life when he must become a man.

    I have decided it is time to go turbo.

    Figured now was a good time to make a thread here so you can all tell me what I am doing wrong... because lets be honest I have no idea what I am doing.

    So anyway, I have had plenty of fun with the car to date, it has always been competitive against stronger competition and is usually one of the fastest MX-5's at the track days I attend.

    Some history to get things going. I bought the 01' JDM imported NB with standard VVT motor.
    It was missing a lot of bits, but that wasn't an issue as it was going to be a dedicated track car and would be stripped down anyway.


    Off to fit cage:


    Pretty much as was when i took it for its first drive:


    At this point the car was running the factory NB VVT Motor, 6 speed gearbox, Torsen 4.1 diff and running factory ECU. NB 'sport' brakes, cheapo BC Coilovers, a bigger front swaybar.

    Bonnet, roof and boot are carbon/fibreglass items.
    Note these were all made with the guidance of 'Lightyear' - here is the first lightyear fastback that was made, which currently still sits on this car.


    After about 6 months i needed more grip so a Wing, Flat Floor, Side Skirts, and larger front splitter happened.


    This gives perspective on the width of the side skirts


    The car certainly is nice to drive around sunny Phillip Island:


    And even not so sunny Phillip Island (the car makes a mean rooster tail):



    Anyway the point of the thread was to discuss the turbo bits that are about to happen.
    If you are interested, there is more history on the car on the Aussie MX-5 forums, sadly thanks to Imageshack going 'paid service' some of the older pics have been lost:
    mx5cartalk.com - BEAVIS' White Track Car
    Last edited by bbeavis; 10-01-16 at 08:54 PM.

  2. #2
    Opens Guido's Avatar
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    Good stuff, look forward to reading more.

    What do you think of the Race King trailer?
    Rust is lighter than carbon fibre.

    My Sports Sedan

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    Registered User I'm DJ!'s Avatar
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    Nice, subscribed
    DJ's don't need sigs

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    Did the crazy win make it slower ?

    Thus the need for some turbo love?

  5. #5
    Registered User lightyear's Avatar
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    You could probably post some lap times with mod reference. Might help to see how the car improved. That red car in the 4th pic looks fast.
    NA8B 89 KW's- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181 KW's- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VN SS

  6. #6
    MX-5 Hairdresser bbeavis's Avatar
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    Quote Originally Posted by Guido View Post
    What do you think of the Race King trailer?
    This trailer was bought before Raceking owned the design, and it was supplied by a different company. It was easy to build, lasts well given its galvanised. The chinese hydraulic ram is rubbish and there are a few quirks that have been improved along the years. Overall its a good, lightweight, low-car-friendly trailer.

    Quote Originally Posted by fatz View Post
    Did the crazy wing make it slower ?
    Thus the need for some turbo love?
    Slower in a straight line, yes. Faster laptimes overall, yes.
    Turbo is necessary to water down the hairdresserness of the MX-5.


    Quote Originally Posted by lightyear View Post
    You could probably post some lap times with mod reference. Might help to see how the car improved. That red car in the 4th pic looks fast.
    Perhaps one day when I am not busy in the garage i will trawl through the Natsoft archives and see if i can take a record of best times.

  7. #7
    Registered User hrd's Avatar
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    Quote Originally Posted by bbeavis View Post
    Perhaps one day when I am not busy in the garage i will trawl through the Natsoft archives and see if i can take a record of best times.
    this can help with the trawling - http://www.motorsportzone.com.au/?p=lap_times

  8. #8
    Team Chapman Racing TCR's Avatar
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    Turbo should make things interesting.

    Quote Originally Posted by hrd View Post
    this can help with the trawling - http://www.motorsportzone.com.au/?p=lap_times
    Wow that's cool, didn't even know that existed.
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  9. #9
    Registered User Brad88's Avatar
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    Quote Originally Posted by hrd View Post
    this can help with the trawling - http://www.motorsportzone.com.au/?p=lap_times
    that's an awesome link
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  10. #10
    MX-5 Hairdresser bbeavis's Avatar
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    Quote Originally Posted by hrd View Post
    this can help with the trawling - http://www.motorsportzone.com.au/?p=lap_times
    That shit is amazing.

  11. #11
    Registered User smithbro's Avatar
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    Freaking cool car! I've always been disappointed by the fact that I am too tall to pedal these things. The roof/boot/lip combo is bloody awesome. Does he sell them online?

  12. #12
    Registered User 333pg333's Avatar
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    Nice! Looks like you're kinda heading towards the Time Attack format?

  13. #13
    Registered User schnitzelburger's Avatar
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    Nice build, i have seen your thread on the mx5 forums, this car and lightyear has been my go-to cars for the best way to build mine.

    My only advice is to try focus more on installing more chrome vent surrounds and door sills rather than handling or power mods.
    Turbo NB MX5: more derp less carbon lightyear clone
    Supra sold it: 1983 MA61 Supra - 2JZ-GTE + 6spd

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  14. #14
    MX-5 Hairdresser bbeavis's Avatar
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    Quote Originally Posted by smithbro View Post
    Freaking cool car! I've always been disappointed by the fact that I am too tall to pedal these things. The roof/boot/lip combo is bloody awesome. Does he sell them online?
    I am 6foot 2 and worst thing is trying to fit in the darn car. I have yet to find a seat that i can mount low enough and at a reasonable angle to sit comfortably in the car.
    For years I have basically compromised somewhere between headroom and comfort.
    The roof/boot is all home made. Something which, in the near future, should be available for purchase. Lightyear did the work on the roof, I was just there for moral support, his car: http://performanceforums.com/forums/...me-Attack-Cars


    Quote Originally Posted by 333pg333 View Post
    Nice! Looks like you're kinda heading towards the Time Attack format?
    Yes, I would say at the moment Time Attack is my 'inspiration'.
    But I don't have the budget/skills/time to compete in the big game at the moment.
    Once the thing is running again I'll look at a options for motorsport sprint championships to contend in as its nice to have some cars/times to chase.
    Last edited by bbeavis; 15-01-16 at 04:57 PM.

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    Registered User adamRSLC's Avatar
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    Super TT at Winton would be the easiest option, also if you have any times faster than Dave's please post them up!.

    Adam
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  16. #16
    Registered User lightyear's Avatar
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    Quote Originally Posted by adamRSLC View Post
    Super TT at Winton would be the easiest option, also if you have any times faster than Dave's please post them up!.

    Adam
    Ha, that's laughable. I have a turbo, he doesn't.
    NA8B 89 KW's- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181 KW's- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VN SS

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    Registered User nelsonian101's Avatar
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    Quote Originally Posted by hrd View Post
    this can help with the trawling - http://www.motorsportzone.com.au/?p=lap_times
    Nice link!
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    Wakefield 1.07.386 Marulan Short 43.4 SMP GP 1.48.1 Winton 1.38.3

  18. #18
    MX-5 Hairdresser bbeavis's Avatar
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    Quote Originally Posted by adamRSLC View Post
    Super TT at Winton would be the easiest option, also if you have any times faster than Dave's please post them up!.

    Adam
    Probably Winton Long 1:37.6, Winton Short 1:07, Calder Park 1:08.4 and Wakefield 1:10.1. The other tracks the lightyear has gone faster now he's turbo. We will see what happens when this car is running again.
    Last edited by bbeavis; 19-01-16 at 08:37 PM.

  19. #19
    Registered User lightyear's Avatar
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    In my defence, I was running 2 classes below. So had a lot more restrictions ��
    Most times are within half a second of my red car. I have no doubt that this car will be quicker than my road/track car. Different class of car.
    NA8B 89 KW's- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181 KW's- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VN SS

  20. #20
    Opens Guido's Avatar
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    Quote Originally Posted by lightyear View Post
    In my defence, I was running 2 classes below. So had a lot more restrictions ��
    Most times are within half a second of my red car. I have no doubt that this car will be quicker than my road/track car. Different class of car.
    Don't back pedal so hard bud, you might throw a chain.

  21. #21
    MX-5 Hairdresser bbeavis's Avatar
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    So welcome to 2016 - year of the turbo.
    This is more than just 'bolt on a turbo' thread.... there's always something that needs fettling or upgrading or that needs to be lightened.

    So first thing I did recently was some 'simplification' to the dashboard. Cut out anything that wasnt really necessary, but kept just enough to keep it still looking like a dash.


    Bought some Wilwoods and big rotors from Trackspeed.


    Almost installed them as you can see below, bit of a comparison on sizing compared to the factory 'big brakes' that came factory on the NB8B ... but then I donated them to another cause so I'm awaiting another set to arrive ... hopefully soon.


    I started thinking about reworking the radiator mount to help accommodate the intercooler. I have cut the front support away and replaced it with box tube, not sure if i really needed the box tube but I figure better to play safe for now. I know others have run cars without a brace between the rails. Please ignore my sh*t welding.


    I lowered the factory radiator brackets by bolting them to the spot where the antirollbar brace bolts. You can see the existing holes ~20mm above.


    And I have bolted a length of aluminium angle between either end of the now lowered radiator supports so I could mount the intercooler.
    Its a 460mm x 320mm core. With the end tanks, inlet to outlet it's about 600mm and fits nicely between the rails of chassis.
    There's about a 10-20mm gap between the radiator and the intercooler.


    Pulled the head off to swap the NB8B (01-05) headgasket for an NB8A (99-00) headgasket purely to best suit a coolant reroute. (HG part # is BP26-10-271)


    Underneath the valve cover all looked pretty nice and shiny really.


    While the head was off, I painted the valve cover - pretty satisfied with wrinkle black


    The guts of the motor all back together again. (swapped timing belt, water pump etc while i was there.


    I have swapped the front and rear radiator/thermostat housings/outlets.
    Nice easy routing of my coolant reroute hoses. The two radiator hoses I used are Gates #21864 and Gates #22382. Between them is a 300mm length of 32mm diameter aluminium tube.


    Bit of an overview of how things line up. You may see I bent up a little steel bracket which bolts off the throttle cable bracket to hold the aluminium pipe and then wrapped it in some old hose for protection. It is certainly tight behind the intake manifold thanks to brake and clutch master cyls.


    Theres about 3mm gap between the firewall and the rear hose. You can see the way the outlet that used to live at the front of the motor is now at the rear and points in an upward direction. The thermostat is at this end of the head now.


    Should have some more stuff happening over the next week or so....

  22. #22
    Non Compos Mentos Gammaboy's Avatar
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    Quote Originally Posted by bbeavis View Post
    This trailer was bought before Raceking owned the design, and it was supplied by a different company. It was easy to build, lasts well given its galvanised. The chinese hydraulic ram is rubbish and there are a few quirks that have been improved along the years. Overall its a good, lightweight, low-car-friendly trailer.
    Have used one of the early MX5Plus versions of the Trailer - the ram was indeed rubbish - had to take up the load on a big ratchet strap and back the ram off to stop it pumping up.
    They're a pretty good trailer for light cars otherwise.
    "Where can we get hold of a Vincent Black Shadow?" "Whats that?" "A fantastic bike," I said. "The new model is something like two thousand cubic inches, developing two hundred brake-horsepower at four thousand revolutions per minute on a magnesium frame with two styrofoam seats and a total curb weight of exactly two hundred pounds."

  23. #23
    MX-5 Hairdresser bbeavis's Avatar
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    Small update on whats been going on - Wiring and Intercooler.....


    I was sick of all the ugly stock wiring on the front end so I started tracing, cutting and pulling wires back through the firewall.
    I did a LOT of depinning and tracing to check i wasnt going to remove something that'd prevent the car from running.
    I think these are AC relays, dont need those...


    Depinned AC relays


    Even the Diagnostic Connector that normally lives on the left hand side of the engine bay got depinned and pulled into the cabin.


    Collection of wires pulled back into the passenger footwell...


    And the end result was no more wiring on the exhaust side of the engine bay, with the exception of the ABS sensor and some wires for headlights:



    Likewise on the intake side


    And a healthy pile of leftovers to clean up later.


    While i was at it, I relocated fuse box a coule of inches further into the corner of the engine bay. I think it neatens things up, although slightly impractical. Particularly given now I can only open the lid by unbolting the fuse box, but its a simple 30secs with a 10mm socket to get it out so eh.


    While I was in the mood for depinning things, I ran some braiding over the wiring for the connectors on the front of the motor.


    And thought I'd show some more detail on how the intercooler is mounted.


    Upper bracket extends up to the top radiator panel


    Front shot, not the fitment between the chassis


    You can see here the gap between radiator and cooler - also note the aluminium angle running under the intercooler.


    The lower bracket

  24. #24
    Registered User lightyear's Avatar
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    So this car isn't finished yet?
    NA8B 89 KW's- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181 KW's- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VN SS

  25. #25
    Registered User zossy1's Avatar
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    Is that just rattle can wrinkle black? Looks good!
    MX5 (2B/4B)

    WP: 1:06.13 || SMPGP: 1:46.84 || SMPS: 1:01.5 || SMPN: 1:14.44 || Winton: 1:34.13

  26. #26
    MX-5 Hairdresser bbeavis's Avatar
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    Quote Originally Posted by zossy1 View Post
    Is that just rattle can wrinkle black? Looks good!
    yep, easy to do on a hot day. bakes well in the sun

  27. #27
    MX-5 Hairdresser bbeavis's Avatar
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    Long overdue for an update.... sorry for the slowness.

    Continuing with some of the electricals on the car.

    First up i've had the ECU apart to get a USB port in the thing.
    ECU innards


    The ECU has usb pins labelled on the board. Really, I don't know why they didn't just unclude a USB port as part of the build.


    So I simply sacrificed a USB cable from an old PC to make my own ECU USB plug


    And I had to rock out the TunerStudio to update the ReqFuel value in the ECU to accomodate the larger injectors.


    Next part of the electricals was neatening up some more of the wiring on the car.
    A whole heap of wires cut from the loom draped over a very dusty car (note the passenger seat has been replaced with wires)


    I grabbed some of the Wiring spiral wrap stuff which comes with a somewhat unusual looking plastic installation clamp tool whatchamajig.


    And with these Wiring clamps


    I end up with something of a neatend firewall.


    And the other thing that I've been tinkereing on over the last few weekends has been running oil lines for the cooler and filter.
    This gives you an idea on how I've run the Oil cooler. I will come up with some sort of clever ducting once i have the front of the car back on.




    Top shot of cooler and filter. The filter is bolted with an alloy bracket to the frame, quite nice and neat and mostly out of the way, yet much easier to get to than the stock spot.

    Reasonably happy with how these are done as the lines are short, discreet, should minimise chance of issues, and should work properly.



    I've sorted the Turbo drain barb in the sump:





    Oh yeah, finally got the Trackspeed Wilwoods installed, pretty straight forward stuff really:






    In other news, I may have actual genuine proper legit turbo bits coming in the mail soon.

  28. #28
    MX-5 Hairdresser bbeavis's Avatar
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    Just a quick update.
    Trying not to reveal too much of our secrets, but starting to think about a new rear wing...

  29. #29
    MX-5 Hairdresser bbeavis's Avatar
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    A small assortment of things have happened this week...

    Bonnet repair/strengthening
    So I had a bit of flex in the carbon bonnet where it extended out from the molded mounting section that the hinges bolt to.
    I'd long been meaning to fix it. So i finally got around to sorting this out.
    Removed the bonnet, gave the areas that need repair a quick sand to scuff them up, then laid down a few layers of some scrap carbon I had.


    After the resin in the repair patch had set, I cleaned it up with a grinder, sanded and painted to blend it in.


    The flex that used to exist here is now long gone, really happy with the bonnet now


    Clutch
    In preparation for more of the powers, new clutch has been swapped in. Exedy button ceramic should do the job. These things are actually made just 15mins down the road.


    Battery
    Thinking about a better spot the put the battery, this might do. Moves the weight to the middle of the car, and the cables are much shorter.
    Not 100% convinced this is the best spot to put it. I guess we'll see.


    That sound deadener stuff
    I was doing something else and got distracted, and suddenly had an impromptu desire to start hacking the sound deadener out of the car with a chisel.





    I'll just need to hit it with some paint and it'll be good as new.

  30. #30
    MX-5 Hairdresser bbeavis's Avatar
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    I know what you were thinking.
    This thread is getting boring, just another bloke with a slow MX5.

    Well thankfully, Turbo bits are coming in the mail very soon.


    More progress on things that are actually on the car...
    Have made myself some duct work to direct radiator air out the bonnet.
    Used good old painters tape to mark out the openings and give me something to work to.
    Mocked up the shape with cardboard.


    Then, cut out with aluminium sheet. Held together with rivets.
    It bolts to the radiator with 8x M4 bolts, and is fixed to the radiator and the pair are installed into the car as a unit.
    This now all needs to be installed before the intake hoses are installed.


    The left side is shallower to accommodate the intake manifold. The right side doesn't have these sorts of limitations so i could curve it in a more 'open' shape.
    Not immediatly obvious from the photos, but the central section actually tapers in a V shape.
    You can see the holes for the intake hose and radiator hose on the left side of the duct.


    Here it is installed with the coolant hose mocked up.
    All the edges match up to the existing bonnet louvers so very little air will (should) bleed out.



    Put the Cusco Diff together and bolted that in the car. Need to remember it still needs oil.....



    I often found my heel would burn a hole in the paint below the accelerator/brake pedal. This would even result in the bare steel going rusty.
    So, made myself this little foot panel. Scrap Aluminium plate cost me about $3. Marked and drilled some holes for style points and gave it a brushed look with some sand paper.



    Oh and I drove an ND


    Thanks to a fellow forum member and mx5er, I had the opportunity to take a demo car for a private, no obligation hoon around my local streets.
    Even had the thing delivered to my door.


    This particular model was the 2litre and certainly had more oomph than I expected. Although, it's smaller than I had anticipated, and with the roof up my head was hitting the soft top.

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