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Thread: Building MX5 Time Attack Cars

  1. #91
    Registered User lightyear's Avatar
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    O.K, so it's not as bad as that guys.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  2. #92
    Registered User 9triton's Avatar
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    Quote Originally Posted by lightyear View Post
    O.K, so it's not as bad as that guys.
    just need to find the right craftsman to weld it up correctly

  3. #93
    Registered User lightyear's Avatar
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    I had an engine builder look at it, he said it can be fixed, but it will be cheaper to port a good second hand head rather than to rebuild this one.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  4. #94
    Registered User lightyear's Avatar
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    The guys at meridian did a great job on the cage. Now it is time to clean up the shell and get it ready for all the c.f panels.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  5. #95
    Registered User lightyear's Avatar
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    Took a pic of the other car. We haven't started on them yet as we where working flat out on the old mx5 rebuilding a new motor and getting it ready to race. It is done now so we can start on the new ones. I will do the widebody moulds first.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  6. #96
    Registered User matt b's Avatar
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    I do not like V slicers.

    "Give it the full rissole son" random old mate 2011

    "If you can't fix it with a hammer it's electrical" Hoops 2007

  7. #97
    Registered User lightyear's Avatar
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    I got a start on the widebody tonight, it's about 45mm wider each side.

    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  8. #98
    Smoke em if you got em! LINCOLN's Avatar
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    A mate of is thinking about one of these. I'll send him this way. Love the carbon!

  9. #99
    Registered User lightyear's Avatar
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    I think they can be a pretty quick car.

    Here is a pic i found with the fuel tank hump, parcel shelf and seatbelt towers surgically removed.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  10. #100
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    Quote Originally Posted by lightyear View Post
    The car weighs 1026 from factory. I reworked out the numbers. It would be minimum 260kg's of stuff that has come off that won't be needed. Replacing that with about 60-65kg's of new stuff. Plus cage 40-50kg's Minus metal removed 20-30kg's. should weigh between 836kg's and 861kg's finished. We will see at the end how close i get. It is not so easy getting them under 800kg's. I will be looking into making a jig to replicate the subframes in tubular steel as well as all the suspension arms. That should save another 20+kg's.
    1026kg for an MX5? Jesus, my 121 was just over that with a full tank of fuel and me in it. And mine was a lardarse, towbar, A/C, driving lights etc.

  11. #101
    Registered User lightyear's Avatar
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    I had a mighty boy ute years ago that weighed just a bit more than the steak i had for dinner. Doesn't mean it makes a good track car. Not with the 3 cylinder motor and 2 speed semi auto box anyway.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  12. #102
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    Don't get me wrong, I know the MX5 is a better track car. I was just suprised how heavy they are compared to the similar sized, and porky, 121. I guess Mazda made the MX5 stronger then I thought, never really thought about how strong they were before.

  13. #103
    Registered User lightyear's Avatar
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    Being a ragtop they need to put in a lot of extra reinforcing. But they did try to keep the weight down all the same. I don't think they are too heavy, but they still need to go on a diet to be quick, seeing as we don't have 500hp to throw at them.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  14. #104
    Registered User lightyear's Avatar
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    I went up to winton and set a new p.b of 1:36 with my new kumhos, and then i decided to put the old toyo's on and just do a few laps as i didn't want to wear out the kumhos. The toyos felt really good even tho they were cold, and i was showing off a bit doing power slides in front of the crowd. It just went out too far. Hopefully i will fix it quickly.



    If you can't see tread on that rear tyre, that's because there isn't any.

    Last edited by lightyear; 09-08-10 at 11:52 AM.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  15. #105
    Moderator Cal's Avatar
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    Opps is that a wrecked 6UL or 2?
    The most dangerous risk of all - the risk of spending your life not doing what you want, on the bet you can buy yourself the freedom to do it later. - Randy Komisar.

  16. #106
    Registered User tinkerbell's Avatar
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    good to see that such light rims can take a bit of a hit?

  17. #107
    Registered User lightyear's Avatar
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    The rims appear to be fine as they hit flat on. I just gotta scrape off all the paint (from the wall) and get them spun up on a balancer to check.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  18. #108
    Registered User lightyear's Avatar
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    I am now getting the NB ready for track work with all the gear from my NA. First thing i did is cut out some more metal and remove the sound deadening and seam sealer, as well as any brackets and bolts that looked a bit shifty.

    There is a hole in the boot floor.


    Engine bay ready for paint.


    Painted the cage, didn't like the colour, so doing it again in the gt3 rs highlight colour as well as the engine bay and other bits.... like the gt3 rs.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  19. #109
    Registered User lightyear's Avatar
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    I have upoaded a few videos to youtube. Here is a link, click on more videos from me once in there to see the others.

    http://www.youtube.com/watch?v=ouLgTmocZ_s
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  20. #110
    Registered User lightyear's Avatar
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    Painted the engine bay, but for some reason the pics come out looking pink. The colour is actually bright orange.




    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  21. #111
    Registered User lightyear's Avatar
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    Painted the cage. Just have to paint the floor now then i can get a start on assembly.

    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  22. #112
    Registered User fattima's Avatar
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    Looking good mate.
    What paint did you use?

  23. #113
    Registered User lightyear's Avatar
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    2k clear over base. Which means you have to paint it 3 times. I painted it the first time with cans, (primer then orange) but it was shyt. So i got some rags and thinners and washed it all off. Wasn't too hard, but still took about 3 hours. Then i prepped it again, used 2k primer, put the patio heater on it for a couple of hours, then put the colour on, patio heater again, then cleared it. And you guessed it patio heater again......
    Took most part of the day to do.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  24. #114
    Registered User lightyear's Avatar
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    Inside is painted now. It took me hours to mask.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  25. #115
    Registered User lightyear's Avatar
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    Finished the painting.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  26. #116
    Opens HoonBoy's Avatar
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    Cool, time to get busy with the mechanical bits

  27. #117
    Registered User lightyear's Avatar
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    I am going to get a start on it, but unfortunately i have to go up to brisbane for 3 days to tile a good friends pool area. About 100m of 600x600 granite. I hope the slab is good.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

  28. #118
    Moderator Cal's Avatar
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    Wow nice cage.
    The most dangerous risk of all - the risk of spending your life not doing what you want, on the bet you can buy yourself the freedom to do it later. - Randy Komisar.

  29. #119
    HoonTV RotaUte's Avatar
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    Quote Originally Posted by lightyear View Post
    Painted the engine bay, but for some reason the pics come out looking pink. The colour is actually bright orange.

    Either way, looks good. Doors etc staying raw carbon?
    Newest member of the PF divorce club

  30. #120
    Registered User lightyear's Avatar
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    Yer, it looks pretty good. All c.f panels will be finished in a clear coat to help with longevity. It will be easier to put stickers on and off.
    Here is another pic of the cage.

    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:46.0 WNTN 1:33.5

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