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 Post subject: Re: FC3S RX-7 dedicated track car... Slow build.
PostPosted: Sat Jun 25, 2016 12:40 am 
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Vehicle: MY06 XT - Black

Posts: 2202
Location: Canberra
Finally got a little done...

I drilled the spot welds on the front seat mount and removed that and then cut a big hole in the floor... Haven't really decided if that provides enough head room yet. I might need to cut more floor out and put a box in to lower the seat more than what is possible at the stock floor height.

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I also cut out the center section at the front of the car... The core support I suppose. This will all be replaced with a tube based removable section that will house a v-mount intercooler and radiator setup.

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 Post subject: Re: FC3S RX-7 dedicated track car... Slow build.
PostPosted: Sat Jun 25, 2016 5:30 pm 
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I Say: Stop BSL. Breed Specific Legislation. Bull Sh!t Law
Vehicle: MY10 XT/STi partial swap

Posts: 4061
Location: Melburn
that's some serious business right there!

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Breed Specific Legislation (BSL) kills innocent dogs, stop this Bull Sh!t Law. Punish the deed, not the breed!!!


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 Post subject: Re: FC3S RX-7 dedicated track car... Slow build.
PostPosted: Sat Jun 25, 2016 6:11 pm 
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Vehicle: MY06 XT - Black

Posts: 2202
Location: Canberra
It's a little scary! I've never done anything like this before!

Learn on the fly! Haha!

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 Post subject: Re: FC3S RX-7 dedicated track car... Slow build.
PostPosted: Sun Jun 26, 2016 10:36 am 
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Vehicle: Evo IX GT wagon

Posts: 5280
Location: ACT
Aren't you worried the chassis will twist without the radiator support panel in there?

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 Post subject: Re: FC3S RX-7 dedicated track car... Slow build.
PostPosted: Sun Jun 26, 2016 11:30 am 
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Vehicle: MY06 XT - Black

Posts: 2202
Location: Canberra
Nah, wasn't too worried about it.

The chassis rails come all the way to the front, and are held in place by the subframe which is still bolted in. The material that was removed was all thin sheet (even the round tube) and nothing moved when the last cut was made. :thumbs:

I intend to do stitch welding around the suspension points etc, and I'll either complete enough of the tube section to hold everything nicely before that, or weld in some temporary supports first.

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 Post subject: Re: FC3S RX-7 dedicated track car... Slow build.
PostPosted: Wed Jul 06, 2016 4:43 pm 
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Vehicle: MY06 XT - Black

Posts: 2202
Location: Canberra
An added expense of moving the seat down and toward the tunnel is that the factory pedals will be a bit annoying, so the decision is to replace them with a Tilton 600 Series reverse overhung pedal box. Haven't decided on the throttle pedal yet, I may be able to modify the factory one to move it over closer to the Tiltons. I'll most likely have to go with an aftermarket steering column too, because the factory adjustment on the stock column won't go low enough and the wheel ends up close to shoulder height! :lol:

Haven't bought any master cylinders or reservoirs yet... That can wait for ages.

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 Post subject: Re: FC3S RX-7 dedicated track car... Slow build.
PostPosted: Wed Jul 06, 2016 7:48 pm 
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I Say: Car mods are like OddBodz, you got to collect them all! -------------------------------------
Vehicle: MY05 STi swapped sled

Posts: 17776
Location: Spearwood Perth WA
Sweet. Does that pedal set take front and rear MCs with balance bar? Or just a conventional tandem style MC?

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 Post subject: Re: FC3S RX-7 dedicated track car... Slow build.
PostPosted: Wed Jul 06, 2016 8:31 pm 
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Vehicle: MY06 XT - Black

Posts: 2202
Location: Canberra
It's a 3 cylinder pedal box setup with balance bar.

I'll be running Evo 7-9 Brembos on the RX7, and the front is an easy install, while the rear is a challenge, so there's another advantage, of being able to size the MCs to suit a Brembo front, stock RX7 rear setup while I figure out the rear Brembo fit up, then can easily swap rear MC to suit at that time.

Plus cleaner engine bay! :) Booster will be ditched and no MC in there. I'll run Tilton's integrated 3 chamber reservoir with -4AN fittings in the bay though. Looks like this...

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 Post subject: Re: FC3S RX-7 dedicated track car... w/ added MX5!
PostPosted: Mon Dec 11, 2017 8:27 pm 
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Vehicle: MY06 XT - Black

Posts: 2202
Location: Canberra
So little has happened to this car, but I've been keeping myself slightly entertained with an NA8 MX5. Basic mods so far, coilovers, some sort of an exhaust slightly noisier than stock and some 15x8's with 205/50 595's.

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Slapped a seat and rollbar in it.

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Took it to Wakefield and managed a 1:17.801, which is about 2.5 seconds slower than I did in the Forester (both would be seconds faster in the hands of a competent driver). Not bad considering the Miata has about 75rwkw, although only weighs about 1060kgs!! :shock:

This is my first trackday with it, and managed a 1:20.9



Got another Wakefield trip happening around march, and before then she'll be on E85, thanks to a Megasquirt ECU, DW200 pump and Flow Force 640cc EV14 injectors... Way overkill for later shenanigans!

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After that, I'll make like MCM and install the TD04 off the Foz onto it. With my less than impressive track skills that should be good for easy 1:10's around Wakefield, with somewhere around 140-160rwkw.

I also went thirds in this, which will stay unregistered and be a track hack. Only issue is the motor is blown (I know, I know... Apex seals etc), so we're in the process of rebuilding it ourselves. FYI, all 6 apex seals came out of the motor just fine. The rear rotor housing being full of coolant was the problem! :lol:

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Meanwhile, the Forester remains broken in the driveway. :roll:

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 Post subject: Re: FC3S RX-7 dedicated track car... w/ added MX5!
PostPosted: Tue Dec 12, 2017 8:45 am 
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I Say: Do or do not, there is no try.
Vehicle: MY17 BRZ, MY11 BT-50

Posts: 16234
Location: Medowie (near Newcastle), NSW
Great update. Seat time along with the extra poke is all you need with the MX-5.

Buying 1/3 of a "blown" RX-8 would have been pretty cheap. They're a great chassis.

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