NC 20BPP Time Attack / Track Car - Build Thread

Chat to do with your MX5/Miata/Eunos Garage Ride(s).

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orx626
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Postby orx626 » Wed Jun 04, 2008 11:52 pm

OK here's the progress in March '08......

I firstly tidied up the PPF join detail...later on I'll add a couple of little plates to clean up the force transfer between the two slightly different section profiles.

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I felt like I needed a quick win...ie. look like I was achieving something :| so I fitted the headlights and front bar. :P

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I also bolted a lot of the standard NC engine bay components to see how the 13B interacted with them. With minor mods an RX-8 suspension tower brace fitted in.

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My goal is to have the car ready to race at the beginning of next year, however work was getting in the way of making the much needed progress on the supercharger front. :( :( :( So after stumbling across a new Blitz non-intercooled supercharger kit I decided to put the R & D of an intercooled Eaton M90 supercharger on the back burner and purchased the Blitz kit.

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The installed kit looks like this....not pretty, however it will save me lots of time (that I don't have) and still get the fatter torque curve I'm chasing. IIRC the Blitz kit boosts at around 6 psi which adds quite an acceptable amount of area under the power/rpm curve. :D

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Which is about half of the boost pressure I expect that the Eaton M90 can deliver. :twisted: Thus it needs intercooling.

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Postby orx626 » Thu Jun 05, 2008 12:20 am

I purchased a pair of Sparco Sprint V's way back in July 2007 and they were taking too much space at home so I got stuck into designing adaptors to allow the Sparco's to utilise the standard NC rails. As per normal I designed them up in Solidworks. :D

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Here are the finished items fitted between the seat and rails. If you are wondering why they have MX-5 Plus profiled in them, I approached the owner about having them as a product, having done other product development work for him previously. These are the only adaptors in existance at the moment.

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....and the seats installed in the car.

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The seats just clear the innards of the NC hardtop.

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I really wanted to see how the car now sat with most of the powertrain installed in the car and the Tein Flex's fitted....and a hint of negative camber. :mrgreen:

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....and that was March, 2008.

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Postby Caffeine » Thu Jun 05, 2008 1:46 am

Awesome work as usual!! :D

the seats look fantastic too!
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Re:

Postby orx626 » Thu Jun 05, 2008 10:46 am

lil_mike wrote:looks good. cant wait for it to be finished. are you planning on changing the pulley wheel on the supercharger for more boost or leaving it at 6psi?


Mike, I will be leaving the Blitz pulley size as is for two reasons...(1) There is no opportunity for intercooling without heavily modifying the kit; (2) The pulley is of the electric clutch type (similar to Toyota 4AGZE & 1GGZE design). At least I will have some time to get the rest of the car sorted before I reach the finish line with regards to engine output. :D

Cheers,
Danny

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Postby kitkat » Thu Jun 05, 2008 10:48 am

i love your work Danny :mrgreen:

Oh and PM sent (as soon as i write it)(regarding another matter).

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Re:

Postby orx626 » Thu Jun 05, 2008 11:06 am

kitkat wrote:i love your work Danny :mrgreen:

Oh and PM sent (as soon as i write it)(regarding another matter).


Thanks Eric. :mrgreen: PM replied to. :D

Cheers,
Danny

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Postby JBT » Thu Jun 05, 2008 11:33 am

....and a hint of negative camber.

A hint :?: :shock:

I can't wait to see this beast Danny.
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Re:

Postby Boags » Thu Jun 05, 2008 2:34 pm

JBT wrote:
....and a hint of negative camber.

A hint :?: :shock:

I can't wait to see this beast Danny.


Wot ee sed. :shock:
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Re:

Postby AJ » Thu Jun 05, 2008 2:44 pm

Boags'MX5 wrote:
JBT wrote:
....and a hint of negative camber.

A hint :?: :shock:

I can't wait to see this beast Danny.


Wot ee sed. :shock:


X3 :shock: ......i think we should have a dodgy day @ QR so Danny can pay his Dodgy Day Boost Tax* (DDBT) :lol: :mrgreen:

*changed from Turbo Tax to stop those with superchargers avoiding their dues :P :lol:
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Postby Mokesta » Thu Jun 05, 2008 3:56 pm

Do you do those seat mounts in lower than \"Kiddy Booster Seat\" height?? :lol: :lol:

Sorry... Looking great!

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Re:

Postby orx626 » Thu Jun 05, 2008 8:05 pm

AJ wrote:X3 :shock: ......i think we should have a dodgy day @ QR so Danny can pay his Dodgy Day Boost Tax* (DDBT) :lol: :mrgreen:

*changed from Turbo Tax to stop those with superchargers avoiding their dues :P :lol:


DDBT..so how does one pay their F.I. dues? :?:

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Re:

Postby orx626 » Thu Jun 05, 2008 8:07 pm

Mokesta wrote:Do you do those seat mounts in lower than "Kiddy Booster Seat" height?? :lol: :lol:


Nope!!! Just for short-asses like me!!! :lol:

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Postby rwf » Thu Jun 05, 2008 11:27 pm

how is the height on seats do look high but have to seat in them to get a feel of them
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Re:

Postby orx626 » Fri Jun 06, 2008 12:05 am

rwf wrote:how is the height on seats do look high but have to seat in them to get a feel of them


Hi Rob, yes it's a bit deceiving in the photos as to how high the seat base (ie. where your a$$ sits) is above the floor. With these Sparco's the front edge is quite high above the seat base so it makes the seat look unusually high. I have positioned the seat so that it's fore/aft position is identical to the standard NC seat and the standard slider movement is maintained.

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From where it is currently positioned, you could only lower it another 10mm before the slider release mechanism would contact the seat and prevent disengagement for sliding. However, if the seat was moved rearward relative to the seat rails then the seat could be lowered a bit further to suit less height challenged persons. I just haven't determined exactly what could be achieved by doing this. The design could easily be adjusted to reflect this change though.

You're welcome to try them out as I'm generally in the area of the workshop most weekends.

Cheers,
Danny

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Postby orx626 » Fri Jun 06, 2008 12:22 pm

Hi Mike, yes the plan is to get the car out on the track and sorted whilst I find time to get the M90 system nailed....just don't know how long it is going to take....depends on work. However, it will happen!

Yes, there is a lot of work in building cars...but it's not insurmountable though! :mrgreen: Being a track car the scope of this build is less than other cars I have built/modified.

Cheers,
Danny


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