Haggard-hawk

[JOATMON]

Awesome, that looks like so much fun. Nice top speeds in the straights.

[Catmaigne]

A friend of a friend let me use his corner scales to get a baseline weight for my car before I start prepping it for TT next year. With a full tank and no driver, the car comes in at 3375lbs with a weight balance of 57/43. My guesstimate of 3400 was pretty close although the car is more nose-heavy than I thought.

According to the NASA TT4 calculator, the max avg hp I could have would be around 360whp. I want to pull my current motor and replace it with a 4-bolt 355 at some point, so I need to make a decision if I want to A) build the motor for 6.5k RPM with a larger cam, nicer lifters, etc., or B) regear the diff from stock to 3.23 and keep the revs under 6k. Part of me really just wants option A for the chop lol, but I know it's going to work the motor and accessories harder. Gonna think about it over the next couple days and before I do some black friday shopping.

Speaking of black friday, I ordered some Apex 18x10" EC7 wheels for TT use. I am also trying to pick up a big ~70 inch rear wing and some splitter quick releases since I need to shotgun a bunch of aero on the car if I want to be competitive.

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[rentedmule]

That's pretty darn close to the advertised curb weight for a 6 speed Formula. Actual numbers rarely agree with advertised ones - nice. I wouldn't have guessed it was that nose heavy! Sticking your spare tire and jack back in would probably help to even our the rear balance!

[JOATMON]

The corner weights came out wierd. Passenger side battery and engines accesories all being to the right would explain the RF increase. But why is the LR 71LBS heavier?

[Catmaigne]

That's pretty darn close to the advertised curb weight for a 6 speed Formula. Actual numbers rarely agree with advertised ones - nice. I wouldn't have guessed it was that nose heavy! Sticking your spare tire and jack back in would probably help to even our the rear balance!

Yeah it's not bad, I was guessing it would be close to stock since I knew most weight pulled out would be offset by track mods. Off the top of my head...

Weight in:
- Autopower 4pt half cage and harnesses
- Kenny Brown triangulated subframe connectors
- Oil and power steering coolers
- Huge gated oil pan
- Strut tower brace
- Catch can
- Brake ducting
- Reinforced sway bar brackets
- C7 hub adapters
- CTSV Brembos on 14" rotors
- Tubular rear LCAs, panhard, torque arm
- Diff girdle
- Tow hooks

Weight out:
- Aluminum driveshaft and flywheel
- 2x fixed back racing seats
- No rear seats
- No AC (evaporator and condenser removed, HVAC box chopped)
- No sound deadening
- No ABS block
- Lightweight stereo and only 2x door speakers
- No airbags and aftermarket steering wheel
- T/A hatch with lexan spoiler
- PC680 battery

My hood is probably the same as stock weight since Trufiber says it's 35lbs.

[Catmaigne]

The corner weights came out wierd. Passenger side battery and engines accesories all being to the right would explain the RF increase. But why is the LR 71LBS heavier?

I'm honestly not sure. I didn't measure with the sway bars disconnected so that could be influencing it. We did measure weights with me in the car and the fronts were closer.

Total 3574
LF 1014
RF 1007
LR 821
RR 732

[JOATMON]

If you still have them it would be easy to swap positions to determine whether you have one that needs a strain gauge re-calibration.
Nolan

[Catmaigne]

If you still have them it would be easy to swap positions to determine whether you have one that needs a strain gauge re-calibration.
Nolan

Nah I don't, but that's a good idea. I plan on weighing it again after all the aero and some more gutting. Hoping to keep it around the same weight but maybe shift the balance rearward slightly. I'll try swapping the plates around then.

[Catmaigne]

My black friday goodies are here already.

The 9 Lives Racing wing I got through their scratch and dent auction was an absolute STEAL at $130 + shipping. It's an EVO wing which is the newer and lighter extrusion. Wing measures 70", but I need to cut an inch off of one side since the mounts were welded slightly off center (hence the auction listing). Fixturing it in my mill is going to be interesting. Also need to have some endplates and mounts laser cut, but I'll get there.

For wheels, I went with gunmetal EC7s since the bronze ones are on production hold indefinitely. A little bummed at this because I really wanted to put a big bronze screaming chicken on my hood, but I'll have to settle for a silver one.

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[JOATMON]

NICE!