Ultimate Boxster S HPDE Project

[truegearhead]

Originally Posted by j.fro

Carbon fiber hood
fiberglass trunk lid & clamshell
fiberglass front fenders
lightweight flywheel
swiss-cheese the bumpers & fab lightweight solid bumper supports
Ditch all the heat shielding underneath & put vents into the rear bumper
scrape the undercoating from the car (or acid dip the body$$$)

I don't know what state inspections are like in TX, but in VA the windshield has to be glass; Lexan doesn't pass.
Also, it's gotta have working windshield wipers, but you can ditch the washer reservoir and pump.

Aside from removing the door airbags, getting weight out of the doors is tough if you still need the car to be able to sit through a rain storm or drive in the winter. I've thought about ditching the window motors and rigging up some sort of strap/pull system or just building slide-in side curtains (a la Speedster) but it's going to take some fabrication.
FWIW, my car is about what you are describing and I'm at 2600# & 250RWHP
I've got cheap headers, fabspeed pipes w/ 100 cell cats welded in, and a pair of 2.5" single chamber imitation Flowmasters. I reflashed with the Softronic product and there's no CEL. LWFW, 74mm TB, and filter/MAF sitting outside the engine bay where the tunnel housing the snorkel used to be round out the engine mods.

I've seen j. Fro's car a few times (and ran against in an autocross). He's your competition if you want the ultimate HPDE car.

[Tabbasco]

First...My Buddy and I are racers and hpde instructors. "ET" races a 996, I race WRL, Chump, LeMons in a 2nd Gen MR2...this car will have data and we will use it to hone quali skills.

So great suggestions on the exhaust, we prolly won't pull the clutch/flywheel till we break something. It makes sense to replace the flywheel and replace the IMS bearing when the clutch comes due.

Where is a good source for fg fenders, hood and trunk?

The car weighed 2850ish originally, We will post weights at every major mod interval. The doors are gutted. We came up with a trick mod for the glass...and we left the door bars in for protection, no cage. We plan on welding in a taller cross cockpit roll hoop.

Decided against the lexan windshield...decided to keep AC & Heat...Texas can be brutally hot and cold for transit to track. Was hoping to buy fg bumpers but those are no longer in production.

Why put vents to the rear bumper??

[Gilles]

Originally Posted by Tabbasco

Why put vents to the rear bumper??

Perhaps to help the trapped air to exit without additional turbulence, and help to cool the engine compartment as well..?
Curios as well

[steved0x]

Originally Posted by Gilles

Perhaps to help the trapped air to exit without additional turbulence, and help to cool the engine compartment as well..?
Curios as well

Cools the transaxle better since more air is flowing over it when you have these rear cutouts.

[The Radium King]

Originally Posted by Tabbasco

Why put vents to the rear bumper??

one of the things i've noticed - look above the transmission - that's a long flat surface that will collect air. no vents and you have a parachute. vent in the proper place and you have a rear diffuser, posing as a vent, in a class that doesn't allow rear diffusers ...

sort of like the vent the front fender liner trick - tell everyone that it is to get more airflow onto the front brakes (brake cooling allowed) but really it is to redirect air that would otherwise be going under the car and creating lift.