Full out Le Mans style...

[blight]

Ok this is the plan as of to date in a 92' awd turbo laser.

1. muffler shop to mandrel bend you a custom exhaust ($300) from the turbo back. Make sure the bends are not crush or press-bent, because they will narrow and impede exhaust flow.
(300)
2.
2.$200 fmic core with the $80 in piping for a fmic setup (Ebay)
(350)

3. Hallman evo pro series manual boost controller (thanks to Dynoflash.com)
(165)

4. 780cc injectors (FullThrottleSpeed.com)
(84.99)

5. walboro 255 LPH fuel pump (ebay)
(90)

6. KN Filter (buschur)
(45)

7. ACT 2100 clutch (buschur)
(340)

8. Ported 2G exhaust manifold (buschur)
(275)

9. Tunerstein logging software With PDA and Wires
($65)

10. port stock turbo
(???)

11. replace rearend with 94' rear end
(???)
---------$1,649.99

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Now that you all know what is going down here are the questions.
This car is going to be set up for le mans style racing at the lowest class (in other words it just needs to pull 12.4s and handle like hell) What suspension mods in your experice will I need to do to do this.

To the list above- am I missing something or adding something I do not need?

As for the following parts what vendor do you recomend and what brand (if there is one) do you recomend I get from you experiences?

1. AFPR: Adjustable fuel pressure regulator (btw is this the same as a fuel controller if not what fuel controller should i get)

2. S-AFC: Super airflow controller

3. MAF- mass air flow senser (do i even need this?)

4. Turbo timer

-------------------------------------------------------------------------------------------

Please no BS just need some quick help here.

 

[David15151]

oh and what about an 02 housing.

Grab some Eibach sportlines some tokico adjustables and a camber kit.
Grab some sway bars, strut brace, Motor mounts.

what rim / tire combo are you doing with.

 

[4pistons]

Road Racing is NOT drag racing mixed with autocross. There is no accelerating from a stop which sort of takes away the advantage of an AWD. A stock Corvette will beat a 12.8 second DSM THROUGH the corner, OUT of the corner and INTO the next one even if you can catch him in the straights. Seriously you need to focus on handling, braking and cooling before you can take advantage of ANY power upgrades to the engine. If you are REALLY going to be doing 100+ mph your stock brakes will be gone the first or second lap. Go out on the hiway and see how many 20 - 100 - 20 runs you can do before they fade and overheat.

DSMs are really fun cheap street cars and can compete in some pro events at that level but they don't make good RACE cars. I know there are some guys that have and do. They put a lot of work, effort and money to do it. I am not taking anything away from them. Quite the contrary, they've made a tremendous effort. But they'll be the first to tell you how hard and "not cheap" it is. I remember one DSM guy, maybe Doug Grant, who said. "Do you want to win or just have fun? If you just want to have fun go for it! If you want to win get a different car."

I am not, in any way, trying to talk you out of it or discourage you. Hell, I want to do it myself. But you did ask the question and wanted the real answers. Just don't make any assumptions on how well, or how cheap, a DSM races.

Rick - '91 GSX - Autocrosser looking to step up.

 

[leet]

the wing creates downforce, but more importantly it creates drag and essentially drags the rear of the car behind the front of the car through the corner. it's more a stability issue than grip. then it's a matter of balancing drag to HP for top end speed.

Wrong. Drag is the enemy.

Wings hold the car to the ground, which will improve the grip of the car, hence the term 'downforce'. Most wings work off of Bernoulli's principle, although the newer style wings in F1 use a combination of Bernoulli and Newton theories. Wings (well, competition styled ones) produce a maximum amount of downforce, with as little drag as possible.

It does not 'drag' the rear end of the car.

http://www.formula1.com/insight/technicalinfo/11/468.html read.

 

[polarmoment]

Wrong. Drag is the enemy.

Wings hold the car to the ground, which will improve the grip of the car, hence the term 'downforce'. Most wings work off of Bernoulli's principle, although the newer style wings in F1 use a combination of Bernoulli and Newton theories. Wings (well, competition styled ones) produce a maximum amount of downforce, with as little drag as possible.

It does not 'drag' the rear end of the car.

http://www.formula1.com/insight/technicalinfo/11/468.html read.

hey, thanks for the link.

however, having been a part of the design and construction of 2 formula race cars myself, i'm well aware of how a wing works. i'm also well aware of the dynamics necessary to induce stability to counter high speed oversteer. downforce is obviously the cat's ass, but since downforce is never, ever generated without drag, we might as well focus on the effect it has on the car. while "drag is the enemy, it's one we cannot live without, and thus it is in our best interest to use it for what advantages we can. the very fact that you have something in the airflow off the back of the car redirecting air creates a fair amount of drag, regardless of its shape.

downforce increases traction, yes. but in this case, drag increases stability due to where it's applying the force. i would agree with you more if we were talking about cars with front and rear wings, or with underbody diffusers/venturis, and that went 200mph (download/drag increase as a square function of speed) but we're not. we're talking about a single piddly wing on the back of a 150mph touring car. fact is, the drag it generates is just as beneficial to the stability of the car as downforce it creates, being that it doesn't produce all that much (since it only has ~350 in^2 of area), even at 150mph. yes, it's still the enemy, due to touring cars being drag limited by nature, but given the benefit to stability it's not nearly the enemy it is in racing like F1, champ car, etc. most teams set up the car's aero by starting out with a lot of wing/drag for stability, then backing it off to gain straight line speed. eventually, lap times will begin to rise as the instability of the car in the corners outweighs teh top speed advantage on the time sheets.

so yes, it most certainly DOES "drag" the rear end of the car for stability. it would be nice if the wings on those cars were big enough to generate enough aero load to substantially increase grip, but they're not.

you cannot compare aero balance of a touring car to that of a formula one car. hell, an R/C car is a closer comparison aero-wise to a touring car.

I would not recomend your mr2 they don't usually do well in this becuase they have a tendency to over steer. So if you do I would harden up those front shocks first.

fast drivers like a lil oversteer

i have to agree as well with the comment posted earlier about BRAKES. this is possibly the first thing you should buy. not necessarily anything blingy like drilled or slotted, but DEFINITELY good pads (hawk, porterfield etc.) and flush the fluid, steel lines and see if you can make some ducts from the front of the car to feed the rotors. try racing on stock brakes and i'd be astonished if they lasted more than 2 laps- especially at BIR. i've run at road america with my MR2 and they lasted about 10 laps there, so i know i need to upgrade (and MR2's actually have some of the best production brakes). worry about being able to stop before you worry about how fast you can go.

 

[leet]

You do have a good point. Thanks for the information!

 

[blight]

Well what do you all think of am old 944s? (porche) Could sell the laser and buy one of these (not from how much we could sell the laser though) and then use what ever money left to build this up instead. What do you think?

 

[karbon]

Old 944s are sexy. I would personally love one to build up.

 

[blight]

then what about insead of all this mess; just a good 12.8 or second dsm car. What do I don't need or what do I need from that list? Forget the autocross and Le mans. I think I am going to go for a mid 12's daily drivr instead.-If no one replies to this post in a day I am going to start a new thread.