[EscortSportage]

ok so ive been doing way to much looking around online,

the car is almost done with the MM catelog, and autox starts april 3rd for me in ct, going to hit up limerock in june im so excited gotta a few lil things i want to finish up before i hit the track...


anyways ive been looking into marier racing products and i really like the front splitter and there front bumper cover, looks awesome and the front splitter would enable me to get rid of the stock airdam, id box in the radiator and it will help with forcing more air over car instead of under it, creating a high pressure area and lifting the hood....

another thing i found is sheet metal spoilers, kind of like the old nascar ons all it is, is a 4inch or more spoiler at a 45 degree angle off the trunk/hatch for more downforce, im thinking i can make one for cheap and even put 4 adjustable links on it like the front splitters, then sell my saleen wing... my questions i guess are is there anyone using this kind of setup and did they feel a difference at the track, honestly i dont want to be the guy with all this racing stuff just for looks, i would actually feel like a front splitter will not just be for looks

[94racing]

honestly alot of the roadcourse guys run cut out osb as theyre splitters. works just as well and its cheap. we are running wrapped carbon fiber.
as for the air dam the st2 stock cars like the monte carlos and stuff run them. we had a monte carlo but sold it.




honestly though. i dont think it will add much downforce unless youre going roadcourse speed. this car was on its way to being a roadcourse car but my brother gave up on it...

[Whiskey11]

I dunno 94, I have zero experience in aero, but a lot of guys that I autocross with swear by it even at autocross speeds and the amount of people WITH it on an autocross course must mean it does SOMETHING to improve the car even at the low speeds.

Here is one of our local "National" level drivers:


It must do something otherwise it's added weight

Photo courtesy of GotCone.com and is NOT mine.

[EscortSportage]

Love that miata, I just read on corral today even at low speeds a rear wing will give u just a lil downforce helping keep our light rears planted

I always thought autox is to slow for wings but now im changin my views

[Whiskey11]

Originally Posted by EscortSportage Love that miata, I just read on corral today even at low speeds a rear wing will give u just a lil downforce helping keep our light rears planted I always thought autox is to slow for wings but now im changin my views

It requires a different style of aero than open track does. For us to achieve downforce in low speeds the wing has to interrupt the flow of air and create enough drag to actually have an effect. That is why you see big plexiglass ducktail spoilers and huge front splitters in autocross and less wings. I'm not sure how much of an impact it is though. I know my friend said his EvoIX SE is a handfull without the factory spoiler on open track days, but for autocross he said it doesn't really matter much.

[ReverendDexter]

Well, with any aerofoil, there's a stall speed for that wing. If you're under the stall speed, it's not doing you any good. The flipside of that is that wings with low stall speeds have high drag coefficients, so they start causing a lot of drag up top.

The goal is to have a wing that's optimized for the speeds you're actually going. An AX wing is certainly going to be a different profile than a roadcourse wing just based on the difference in speed.

[EscortSportage]

im shooting for 325hp, shes not going to be some monster HP stang anymore (all motor again, turbo stuff sold) im not worried about exsessive drag with the ducktail, if i can get better grip overall with the added downforce im happy, and the ducktail wing would be so easy and cheap to make and mount,

the front splitter is 250 from marier .... i could make one too but, idk we will see

[94racing]

Originally Posted by Whiskey11 I dunno 94, I have zero experience in aero, but a lot of guys that I autocross with swear by it even at autocross speeds and the amount of people WITH it on an autocross course must mean it does SOMETHING to improve the car even at the low speeds. Here is one of our local "National" level drivers: It must do something otherwise it's added weight Photo courtesy of GotCone.com and is NOT mine.

well with something that huge i could see downforce. idk i dont do autox. eventually i will but not now.
notice on the rocker of the miata it says 949racing?
lol.

Originally Posted by EscortSportage im shooting for 325hp, shes not going to be some monster HP stang anymore (all motor again, turbo stuff sold) im not worried about exsessive drag with the ducktail, if i can get better grip overall with the added downforce im happy, and the ducktail wing would be so easy and cheap to make and mount, the front splitter is 250 from marier .... i could make one too but, idk we will see

what we did to seal the splitter from air getting between it was bought a sheet of black plastic and put it around the base of the bumper and then went over it with tape to secure air from pocketing in it and causing drag. also we removed the grille and put a flat panel in place of the grille for less air resistance. doesnt overheat.

[RockRacing]

The most important thing is to have a balanced aero package. If you get a splitter with no wing/spoiler you will get more front grip but the oversteer will have a tendency to make the rear end want to come around and pass you if you turn too hard. Likewise, if you get an effective wing and no splitter your front end will lose a lot of grip.

I have an adjustable splitter on the front of my race car and adjustable wing & diffuser on the rear. IMO, a diffuser is the most effective method of producing downforce on the rear of the car. pairing it with a wing makes it that much better.

[EscortSportage]

there is no way im running a massive wing like ur avatar on a street driven fox, and plus u dont get any noticable downforce till 140mph plus or something...im an ametuer at this rr autox thing, i need to walk before i scream around corners

im thinking a splitter from marier or make one, and a ducktail like that miata but sheetmetal or aluminum like the Black MRT notch on corral.net

[94racing]

Originally Posted by RockRacing The most important thing is to have a balanced aero package. If you get a splitter with no wing/spoiler you will get more front grip but the oversteer will have a tendency to make the rear end want to come around and pass you if you turn too hard. Likewise, if you get an effective wing and no splitter your front end will lose a lot of grip. I have an adjustable splitter on the front of my race car and adjustable wing & diffuser on the rear. IMO, a diffuser is the most effective method of producing downforce on the rear of the car. pairing it with a wing makes it that much better.

true we still have yet to add a rear diffuser but we dont seem to have a need for more rear downforce.... yet we will see what the boss 302 engine brings.

[Whiskey11]

Originally Posted by 94racing well with something that huge i could see downforce. idk i dont do autox. eventually i will but not now. notice on the rocker of the miata it says 949racing? lol.

Indeed it must add something, otherwise I doubt he would add it.

I didn't notice the 949racing on the side, awesome though .

[RockRacing]

Originally Posted by EscortSportage there is no way im running a massive wing like ur avatar on a street driven fox, and plus u dont get any noticable downforce till 140mph plus or something...im an ametuer at this rr autox thing, i need to walk before i scream around corners im thinking a splitter from marier or make one, and a ducktail like that miata but sheetmetal or aluminum like the Black MRT notch on corral.net

Yeah, for a street driven car you have to balance function with practicality. The wing I have can be removed fairly easily for not so conspicuous street driving but yeah...nothing like hearing a bunch of "Jeeze! Is your wing big enough??" from random people. My splitter and diffuser are also easily removable (and have to be to load and unload on the trailer). You can take it off after an event and no one would know it was there.

The aero actually works at much lower speeds as well. At it's full angle of attack, the wing I'm using makes 88 lbs of downforce at 50 mph, 197 lbs at 75 mph, all the way up to 790 lbs at 150 mph.

When I first installed the diffuser, it was before a race at a track with mostly very tight turns (see my video in the media section) and I expected to have only minimal gains on that track. On my first qualifying session I ended up beating my old best time by a full second.

[94racing]

Originally Posted by RockRacing Yeah, for a street driven car you have to balance function with practicality. The wing I have can be removed fairly easily for not so conspicuous street driving but yeah...nothing like hearing a bunch of "Jeeze! Is your wing big enough??" from random people. My splitter and diffuser are also easily removable (and have to be to load and unload on the trailer). You can take it off after an event and no one would know it was there. The aero actually works at much lower speeds as well. At it's full angle of attack, the wing I'm using makes 88 lbs of downforce at 50 mph, 197 lbs at 75 mph, all the way up to 790 lbs at 150 mph. When I first installed the diffuser, it was before a race at a track with mostly very tight turns (see my video in the media section) and I expected to have only minimal gains on that track. On my first qualifying session I ended up beating my old best time by a full second.

yeah i was gonna say we may reach 140 max with our hp to weight ratio that wouldnt make a point if we had a wing or not at that point.
we can take our wing off with 4 clips but that takes the whole trunk too. the splitter is 2 pins and 2 bolts.

[EscortSportage]

idk, i have a gt front end, i own a 93 cobra grill that ive hollowed out and i want to add that in to get some more airflow thro the rad.

i want to box in the rad as well, if i run a splitter ill completly box the rad in, if i run the stock air dam or at a chin spoiler ill keep the factory air damn and only box the sides and top of the rad

i dont have a cooling issues ESPECAILLY now without a hot turbo under the hood anymore...

[ReverendDexter]

Originally Posted by EscortSportage plus u dont get any noticable downforce till 140mph plus or something.

Like I said earlier, it's all in the profile of the wing.

And 949Racing is a company that makes lightweight wheels mainly for Miatas, they're out of LA.

[EscortSportage]

think the saleen wing creates any downforce

[ReverendDexter]

Originally Posted by EscortSportage think the saleen wing creates any downforce

My understanding is that the Saleen wing is functional, but I don't know how much it generates or at what speeds. That, and with how close it is to the body, I'm not sure what sort of airflow it really sees.

[RockRacing]

The biggest problem with the fox is the abrupt change of angle where the roof meets the hatch. It basically creates a stall area right behind the rear window. They need a wing that is raised up above that turbulent area and use the clean air at or above the roofline:


They could also probably benefit from some vortex generators to delay flow separation as the air moves down the hatch from the roof, such as these:

[EscortSportage]

i dont want to go over board, im just racing for fun...

sooo the saleen wing being so low is for looks..as i expected....

im all about function but again still a street driven fox