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Full Underbody Kit

 
Old 11-14-2017, 04:36 PM
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Default Full Underbody Kit

Made a comment in anther thread to gauge interest and instead up muddying up that thread started a new on. Long story compacted super short is i have a miata, Solidworks, and a supplier with laser tables and breaks and all sorts of good stuff we use for work. I have been mocking up a full flat under-body in Solidworks from the front splitter all the way to the rear diffuser. As of now I am planning to have the splitter cut from 3/8 alumalite, the under-body and diffuser of .074. I will also have stainless frame rails made at the same time but the thickness it TBD. The end result will be a full underbody kit front to back with proper ducting for trans and diff and ducting for the radiator. If this is something you guys are interested in ill get the design posted up here in a week or so and we can modify it to our liking and get a group buy going. (My laser cutting guy gives a huge price break at 10 units,)
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Old 11-14-2017, 04:51 PM
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The problem with efforts like this is the same as all of other niche miata performance products. Being that, in the price range that this car plays in... the consumer base that wants something like this, has the means and motivation to fabricate it themselves. Especially for what this will inevitably end up costing...

Not trying to burst your bubble, and you've got to start some where. However this is a common problem that plagues the miata aftermarket and it's an inescapable reality of an aftermarket for a car with an initial buy in cost under 5k.
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Old 11-14-2017, 04:57 PM
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I would like to see the drawing.
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Old 11-14-2017, 04:58 PM
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Fully aware of that. About the only thing I have going for me to make this cost effective is my purchasing power with the laser cutting company. This year we were 70% of their total sales which is projected to be close to 3.5mil this year just to them. The only other part is i can provide the convince of having everything from front to back.

But like you said these cars are cheap in the racing word and these parts arnt that hard to make on your own at home with enough time and planning
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Old 11-14-2017, 05:05 PM
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Some of us don't have facility to accommodate such custom work but also don't want to pay a shop. I'd be interested in drawings, but just like any other thing...it may have to be tailored or adapted since everyone runs different exhaust and subframe setups. I imagine it'd be beneficial to market some pre stamped and bent radiator ducting, but alas, different intercooler and A/C setups.
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Old 11-14-2017, 05:10 PM
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Agreed. The radiator ducting i would leave closed of and allow for people to cut their own intercooler/brake duct holes into it. I know you are running over the top charge pipes and i plan to do the same. as for the exhaust im going to make sure it will utilize the stock exit location or straight out the back for those who prefer that.

Friking love your car too. its what spurred my VVT motor build
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Old 11-14-2017, 05:13 PM
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Aww shucks.

Damn, I was in Seattle/Bremerton for nearly a month last October. Should hung out.
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Old 11-14-2017, 11:43 PM
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Also if anyone needs anything laser cut let me know and we can come up with a drawing and get one made
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Old 11-15-2017, 01:38 PM
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Can we work on radiator duct?

Assuming no ac condenser

Last edited by psyber_0ptix; 11-16-2017 at 02:46 PM.
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Old 11-15-2017, 01:44 PM
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Sure can. What did you have in mind? Oil cooler mounting ncluded in shroud?
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Old 11-15-2017, 01:52 PM
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sub'd

I also have 3D modeling software available to me to make various projects. My main issue I have is finding someone willing to make the parts for a decent price.
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Old 11-15-2017, 02:50 PM
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I can get you a quote if your pm me a dxf of the drawing.
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Old 11-15-2017, 04:55 PM
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I didn't even think about an integrated oil cooler mount. But modular is good; options and holes for later that can easily be plugged. I have my oil cooler mounted behind the radiator right now.

I may have the bumper off in the next week or two to take some photos and eventually start doing some CAD. (Cardboard Aided Design). But like you said, something generic enough that folks can modify accordingly for intercooler piping or brake ducting. Right now, I'm just thinking simple box to the mouth. I wish the bumper itself wasn't so bulky and space consuming, but I don't think I'd give it up for a bash bar.
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Old 11-16-2017, 02:42 PM
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Got a fan shroud all modeled up. It is configurable to run either dual Spal 30101522 (1328 cfm @13A) or a single spal fan with a 25 row setrab or earls oil cooler. Still need to make a cutout for the coolant lines and add in the bulb seal to seal on the radiator.



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Old 11-16-2017, 02:45 PM
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Oh I misunderstood. I was thinking oil cooler mount integrated to ducting not shroud.

That's essentially how mine is mounted now, sans shroud and sealed to the radiator independently.

I was thinking of moving the cooler forward of the radiator. Single fanning it. But need to make a duct pretty badly.
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Old 11-16-2017, 02:48 PM
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I know what you meant. The oil cooler is way more efficient in front of the radiator. But I've seen many people on here mount it like you have it so this would give some flexibility on mounting. The undertake will have provisions for an oil cooler in front of radiator.
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Old 11-16-2017, 03:27 PM
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What's the thickness capacity of your laser people. Specifically 1018 cold rolled plate.
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Old 11-16-2017, 03:56 PM
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.135 10g is the thickest they can get in a sheet or up to 4x6 flat bar
They can cut 2" on the laser then jumps to the waterjet.
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Old 11-16-2017, 04:46 PM
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Your lower pic with the fan and 25 row oil cooler is actually how I am planning on setting up car only I'm using the 14" 30102042 fan (1864 cfm 17A) and the factory Setrab brackets for the 25 row. Street car so I was going to fab up a shroud like that for my Supermiata crossflow rad. Looks good!!!
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Old 11-17-2017, 09:45 AM
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Pretty happy with this, might make the cutouts for the radiator hoses a bit tighter fitting. Weight as shown with 2 12" spal fans is roughly 8 pounds
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