Spectre Super 7 (locofinn's D Mod Seven)

[locofinn]

After completing my first track day and autocross, I think it can be posted in this section. I had to name the car make and model for event entries so I am calling it a Spectre Super 7. Spectre meaning "fearsome apparition or ghost" in an effort to intimidate my competition.

It will never be "done" but here is the info and pics as it sits today. More can be found on my build page.

2013 Spectre Super 7

Chassis
• Custom scratch built “Book” sized Mig welded with Std Mig Mix Argon/CO2
• 1” 16ga mild steel square and round tube with 16ga stitch welded floor and various extra strengthening tubes.
• 1½” .095 wall DOM Seamless Roll hoop front and rear integrated into frame per SCCA Solo rules and SCCA GCR rules
• Two 2” x ¼” steel drive shaft hoops (required for Modified SCCA rules)
• Completed bare frame is 240 lbs

Body
• Handmade .040 half hard aluminum sheet panels
• Nose cone fiberglass S2 repoduction
• 10” Front cycle fenders from Coveland
• Rear fenders handmade .040 aluminum with integral rear spoiler/boot deck
• Dash Gauge Plate 1/8” 5052 aluminum plate
• Aero Belly pans .040 aluminum

Suspension
• UB Machine Front lower strut type with spherical bearing mounts to chassis and upright (Asphalt stock car type design)
• Speedway Front upper wishbone swedge tubes with spherical bearing mounts to chassis and std ball joint to upright. (Asphalt stock car type design)
• Mustang II spindle/uprights
• Front coilover aluminum single adjustable shocks with 350 lb springs
• Rear custom 3 link trailing arm live axle with swedge tubes, panhard bar and spherical bearing mounts to chassis
• Rear coilover aluminum single adjustable shocks with 90 lb springs
• Diamond spun steel race wheels custom offset 13” x 10” rear and 13” x 8” front
• Hoosier race slick tires rear 22” x 10” x 13”, front 20.5” x 8” x 13” R25B compound

Driveline
• Mazda 12A stock port rotary with carb
• 2” Custom 2 primary header design .180 wall mild steel and titanium wrap
• Stainless Racing Beat 3” presilencer, to 3” Racing Beat stainless muffler
• Oil system with 2 qt Accusump with factory oil cooler and manual valve all AN braided stainless lines
• Cooling Honda Civic 3 core radiator with manual electric Spal fan
• Mazda RX-7 stock 5spd gearbox & clutch
• Custom driveshaft fabricated by Action Machine, South Bend, IN
• Mazda RX-7 GSL live axle with LSD

Steering
• Coleman 2.5 quick ratio manual rack & pinion
• 10” steering wheel with Coleman quick mount

Brakes
• Front Ford stock car type vented disc with GM metric calipers from Speedway
• Rear Mazda RX-7 stock disc
• Dual Wilwood master cylinders with remote cockpit adjustable balance bar.
• Neal CNC pedals
• Combined Nylon and braided steel lines
• Hawk Pads

Ignition/Fuel
• Weber 48IDA downdraft mounted on Racing Beat intake
• Holley electric fuel pump with high capacity filters and fuel pressure regulator
• 3 gallon RCI aluminum fuel cell
• All braided stainless lines and AN fittings
• Mallory HyFire 6AL dual CD ignition for trailing and leading wasted spark set up with rev limiters.
• Innovative Tech LC-1 Air Fuel sensor mounted in header with heat sink and digital A/F gauge
• Lightweight battery mounted in boot
• 8 circuit basic electrical harness and fusebox

Safety/Interior
• Kirkey aluminum race seat
• G Force 5 point SFI harness with camlock
• AutoMeter & Rebco Pro Comp gauges and water resistant switches & Master switch
• Two .25” x2” steel driveline hoops & SFI Flexible safety blanket/scattersheild

[locofinn]

A few links to videos I've posted elsewhere:

First Drive
http://youtu.be/Mn5QhnzWHOw

First Track Day
http://youtu.be/3zvp27XIuSQ

First Autocross
http://youtu.be/WDyuSzeFwtE

Yes it is fun to drive!

[locofinn]

Gave it a bath and snapped "completed" pics.

[GonzoRacer]

*Drool, Drool* *Slobber*
DAMN, that thang is pretty! Fast too, huh?
Congrats on finishing up in such a fine fashion!

JDK

[locofinn]

I just changed the jets in the carb and took it for a quick spin. It scares me. This is a good thing.

[rx7locost]

Oh Yeah! looking great!!!

Now that you have those fancy numbers on that aluminum, how you gonna polish that all up nice an purdy like?

Just kidding.

I don't think you ever mentioned, are you premixing? I didn't see any mention of the OMP delete option. If so, what ratio? I am using TCW3 at 124:1; but I only run on the street.

[snookwheel]

That is beautiful! I hope someday to give building a Se7en a shot. You set the bar pretty high!

[Earley Motorsports]

Looking good and good job. What track was your track day at and where do you run the autocross. They are fun.

[locofinn]

Yes running 100:1 premix. Standard 2 cycle oil from WalMart! Remember this is Lowcost.

[locofinn]

Track Day was a Gingerman Raceway in South Haven, MI http://www.gingermanraceway.com/. Great sports car circuit only about an hour from home.

The Tire Rack Vehicle Dynamic test track for most of our local SCCA solo (autocross) events.http://www.tirerack.com/tires/tests/testingProgram.jsp We also run at Grissom Aeroplex in Peru, IN http://en.wikipedia.org/wiki/Grissom_Aeroplex. Both are in our region. We are a bit lucky here to have 2 great autocross venues to play on.

[gregV]

Like much..
This is up my ally for sure. Great job on this car.

[locofinn]

Had huge fun at Chicago Region autocross on Father's Day. The youtube vids are attached.

http://youtu.be/XRZYAPpHzAU

http://youtu.be/Q6SH-T6RUkU

[a.moore]

Nice driving - it looks like a good day of autocrossing.

[locofinn]

Getting used to the car. I am learning that things happen much faster in a Mod class car than a stock class car. I gotta look WAY ahead! Big fun though.

[GonzoRacer]

Getting used to the car. I am learning that things happen much faster in a Mod class car than a stock class car. I gotta look WAY ahead! Big fun though.

AMEN to that, Brother!
I had a rather humbling experience the other day, when James stopped by with a GoPro recording he'd made of me and the Slotus on Sunday. My driving is HORRIBLE! Timing is off, coasting too much, braking too early, etc, etc.

A part of it is just out of practice after missing a couple of years worth of events whilst working on the car. The other factor, I believe, is that this car is just that much quicker than the MGB I was running before. The B was no slouch, as MGBs go, but still... I recall calculating that the MGB was good for about 48 mph at redline in 2nd gear. The Slotus, according to my calc's, is right at 70 in 2nd redlined. No F'ing wonder I'm behind!!! Stuff is comin' at me a lot faster than it used to!

Cool, ain't it? Enjoy!

JDK