The lotus diffuser is around $300 new at a dealer. (suprisingly cheap for a Lotus factory part) Used they seem to run from $50 to $200 depending on condition, greed, need to sell. I paid $100 each for the diffuser and the mid/rear undertray. The undertray has several naca ducts to direct air up. Lotus does this as it's rear engined. I like the idea to help with cooling the rear diff/exhaust.
Parts haven't arrived yet. Should be hear in the next day or two. As lazy as I am it' likely to take me 6 months to actually install them. You want a thread with lots of info? Here's one to add to your favorites... MX-5 Miata Forum - wings and splitters? Massive thread at m.net that's been running for a couple years. Lot's of good info from Emilio and others out there running the tracks hard. |
Can be found here:
Elise SC Rear spoiler (Elise S2) [ESCspl] - €280.00 : Elise Shop, Performance parts for your Lotus Elise Edit: nvm saw cueball's post, much cheaper at the dealer. |
Originally Posted by rccote
(Post 383024)
Edit: nvm saw cueball's post, much cheaper at the dealer. They seem to pop up used fairly regulary on the lotus forums. I just missed a $60 one with minor damage. Ended up buying a $100 unit in good shape. The two parts arrived this morning. Here they are... http://i184.photobucket.com/albums/x...e/diffuser.jpg http://i184.photobucket.com/albums/x.../undertray.jpg |
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Holy god damn sonofabitch! I have been waiting years for someone to find a relatively affordable rear diffuser of high quality, i.e. an oem part, that translates over to the miata fairly well. IT HAS BEEN FOUND! I would never have thought to check prices on the Elise's unit as I would have assumed it would be $1k.
That is the shit. Let's get some clear info on how mounting was dealt with, what was fabricated to mount these parts, how that center section covers the rear underside of the miata etc. etc. etc! -Ryan |
Who wants pics of my "undercarriage?"
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Originally Posted by Sam Amporful
(Post 383122)
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1 Attachment(s)
Attachment 207398
fabbing up some little blocker plates on the sides to shroud the front tires. 5.5" or so out from the bumper. |
Sav - do you have a decent source for ABS?
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I've always wondered if propping the trunk open a bit would create the same effect as a rear wing, is that what that red miata with the diffuser did? I would be worried the drag created by letting the air in the trunk would negate any gain from the upwards angle.
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Originally Posted by ThePass
(Post 383270)
Sav - do you have a decent source for ABS?
Originally Posted by curly
(Post 383281)
I've always wondered if propping the trunk open a bit would create the same effect as a rear wing
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Originally Posted by Savington
(Post 383294)
No, that's 12mm birchwood. $36 for a 4x8 sheet at Home Depot. TAP Plastics wanted like $130 for a 4x8 sheet of 1/4" ABS (the thinnest I would consider using).
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I can't bring myself to use wood on the car...
I think I can get an ABS sheet for $100... |
Originally Posted by levnubhin
(Post 383301)
How did you attach it?
Ripped out the front bumper crash structure and attachment points, then took 1" square aluminum and went down to the R-package lip, then a stretch across the front and back at 45 degree angles to the edges of the lip. Two small supports from the edges up to the frame rails as well. It attaches to the stock plastic undertray location in the back (couldn't reach all the way to the crossbar) Ryan, you'd be stunned at the number of professional racecars using wood splitters. |
1 Attachment(s)
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(4052)BLACK ABS 1/4" THICK 48" X96" SHEET IN THIS SALE! - eBay (item 190289521949 end time Mar-27-09 07:45:47 PDT)
Should be cheaper than that other ABS and more than needed. |
Originally Posted by Savington
(Post 383338)
Ryan, you'd be stunned at the number of professional racecars using wood splitters.
-Ryan |
Originally Posted by Sam Amporful
(Post 383346)
(4052)BLACK ABS 1/4" THICK 48" X96" SHEET IN THIS SALE! - eBay (item 190289521949 end time Mar-27-09 07:45:47 PDT)
Should be cheaper than that other ABS and more than needed. |
now its a track car.
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Originally Posted by Savington
(Post 383373)
Have you shipped a 4x8 sheet of .250" ABS across the country recently? :2cents::2cents::2cents::2cents::2cents::2cents::2 cents:
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