Tarmac 88 "Button" GLTC/ST5/TT5
#248
List for Sonoma is:
1. Replace broken trans. My 5th gear has been dead for several events. I only need 5th at one track, so i've run Buttonwillow and Chuckwalla with a "4 speed".
A 6spd and MiataRoadster shifter are going in.
2. Relocate my killswitch. NASA tech did not require it to be within drivers reach while belted. Easiest place to install it was passenger b pillar area. It is now moved to the center of my new 'dash'.
3. Delete my keyed ignition. I removed the lock pin from the the steering column over the winter, but hadn't made the leap to wiring in my Longacre starter panel. That's now done, thanks to John.
4. Aerocatch latches. PITA, everybody warned me. I procrastinated, but now they're done.
5. Seat and seat mount finalization. I've settled on the Sparco Circuit II and Jerfspeed mounts. Rear humps removed, seat sits on the floor. Stellar.
Battery wire along PPF now runs through rear bulkhead and into passenger side of cabin.
Old location of ignition cylinder left of gauge cluster is now deleted:
Dual USB charger is hardwired for GoPro and/or AIM Solo charging, or whatever else comes up.
I had to cut even more crap out of my hood.
I am considering how much deleting of the OEM latch to do. Wasn't ready to make to make the jump last night with the cut off wheels. I'll probably drill the rivet, cut the loop in half an fish it out, leaving most of that aluminum material there to box the front bow of the hood for stability.
1. Replace broken trans. My 5th gear has been dead for several events. I only need 5th at one track, so i've run Buttonwillow and Chuckwalla with a "4 speed".
A 6spd and MiataRoadster shifter are going in.
2. Relocate my killswitch. NASA tech did not require it to be within drivers reach while belted. Easiest place to install it was passenger b pillar area. It is now moved to the center of my new 'dash'.
3. Delete my keyed ignition. I removed the lock pin from the the steering column over the winter, but hadn't made the leap to wiring in my Longacre starter panel. That's now done, thanks to John.
4. Aerocatch latches. PITA, everybody warned me. I procrastinated, but now they're done.
5. Seat and seat mount finalization. I've settled on the Sparco Circuit II and Jerfspeed mounts. Rear humps removed, seat sits on the floor. Stellar.
Battery wire along PPF now runs through rear bulkhead and into passenger side of cabin.
Old location of ignition cylinder left of gauge cluster is now deleted:
Dual USB charger is hardwired for GoPro and/or AIM Solo charging, or whatever else comes up.
I had to cut even more crap out of my hood.
I am considering how much deleting of the OEM latch to do. Wasn't ready to make to make the jump last night with the cut off wheels. I'll probably drill the rivet, cut the loop in half an fish it out, leaving most of that aluminum material there to box the front bow of the hood for stability.
#251
Originally Posted by doward
1. Replace broken trans. My 5th gear has been dead for several events. I only need 5th at one track, so i've run Buttonwillow and Chuckwalla with a "4 speed".
A 6spd and MiataRoadster shifter are going in.
#252
We'll see. I only did 3 SPM races last year, zero so far this year. The car is really fun with the wing and splitter, especially on Hoosiers. The 6spd and more power will only make it even more funner, and even more not SPM S2 legal. I still go to the majority of the SPM events to drive something or give ridealongs or whatever, and will maybe rent a ride if if i get a craving.
It is the age-old SPM Spec class vs tinker toys in ST. I like the project-ness of an ST car. I get to be a ricer and the car goes faster. If the new cylinder head doesn't make >15 more whp, I might reevaluate.
Sonoma is an SPM weekend, but I'm just trying to win HPDE, as it will my first on-track action since my TBI. If it goes well, I'll race again with NASA ST5 at Buttonwillow.
Last edited by doward; 08-13-2018 at 08:17 PM.
#253
Back at the end of 2017 I shattered 5th gear in this $100 NB 5spd.
I flushed the fluid a few times and ran my car as a 4 speed for 3 events, ultimately crunching something else in the box at Buttonwillow when my throttle body asploded.
Today, I fixed things to nearly wrap up my prep for Sonoma. While I was in there, I found a super crunchy pilot bearing, and while replacing the pilot bearing I stripped one of the threads in the 10 yr old Fuji Racing flywheel. So I decided to upgrade from my eBay clutch...
1.6 Puck Rigid Supermiata Clutch
1.6 Aluminum Supermiata flywheel
MazdaRoadster short shifter
NB2 6 spd
Slave, pilot and throw out bearings
Amsoil MTL
...and there was one casualty
Should be getting close to my goal of 2100lb comp weight. Still need to swap my cut rear bumper, remove the factory hood latch and loop stuff, and cut the crash beams out of my doors. Then unbolt my ST5 ballast for the HPDE championships at Sonoma and Laguna.
I flushed the fluid a few times and ran my car as a 4 speed for 3 events, ultimately crunching something else in the box at Buttonwillow when my throttle body asploded.
Today, I fixed things to nearly wrap up my prep for Sonoma. While I was in there, I found a super crunchy pilot bearing, and while replacing the pilot bearing I stripped one of the threads in the 10 yr old Fuji Racing flywheel. So I decided to upgrade from my eBay clutch...
1.6 Puck Rigid Supermiata Clutch
1.6 Aluminum Supermiata flywheel
MazdaRoadster short shifter
NB2 6 spd
Slave, pilot and throw out bearings
Amsoil MTL
...and there was one casualty
Should be getting close to my goal of 2100lb comp weight. Still need to swap my cut rear bumper, remove the factory hood latch and loop stuff, and cut the crash beams out of my doors. Then unbolt my ST5 ballast for the HPDE championships at Sonoma and Laguna.
Last edited by doward; 08-21-2018 at 11:40 AM.
#259
I drove it tonight. Man. It rips.
6spd and 4.3 is a hoot.
The car is a rat, and my buddy Dave, the previous owner, would absolutely love its current config.
I am more excited to drive this version, than any previous version of Button, including the 2016 NASA Championship engine with the fancy OsGiken.
143whp
~2000lbs (2200 with me in it)
2014 “headgate” Spec Miata motor.
Racing Beat header
Racing Beat exhaust
DiY intake
OEM squaretop manifold
DW450 fuel injectors
Walbro 190 fuel pump
Megasquirt pnp2
Supermiata QMax coolant reroute
Koyo 37mm radiator
Amsoil Dominator 10w30
e85
OEM 6spd
Miataroadster 6spd shifter kit
OEM 4.3 Torsen II
Supermiata 1.6 Puck Rigid Sport Clutch
Supermiata 1.6 Aluminum flywheel
Supermiata driveshaft
Supermiata clutch line
Energy Suspenion urethane diff bushings
Amsoil MTL in the trans
Amsoil SVG in the diff
1000/500 Gen2 Supermiata Xida Race
Racing Beat 54103 front swaybar
Supermiata adjustable rear swaybar
Supermiata swaybar endlinks
Energy Suspension urethane bushings
Sadfab offset front lower control arm bushings
Supermiata brake lines
G-Loc R18/R12 brake pads.
OEM 94-00 1.8 calipers
Centric blank 94-00 rotors
Motul RBF600 brake fluid
Singular Motorsports 5pc hood louver kit
Singular Motorsports AeroWing
-APR GT250 airfoil, APR endplates cut down to <12” length.
DiY Alumalite front splitter, 4” blade
DiY HDPE plastic airdam
CCP Fab OEM shape hardtop.
DiY poly rear window, 1/8”
DiY poly front windshield, hard coated outer, anti fog inner. 1/4”
15x8 949 Racing 6UL with 205/50/15 Hoosier R7
15x9 949 Racing 6UL with 225/45/15 Maxxis RC-1
6spd and 4.3 is a hoot.
The car is a rat, and my buddy Dave, the previous owner, would absolutely love its current config.
I am more excited to drive this version, than any previous version of Button, including the 2016 NASA Championship engine with the fancy OsGiken.
143whp
~2000lbs (2200 with me in it)
2014 “headgate” Spec Miata motor.
Racing Beat header
Racing Beat exhaust
DiY intake
OEM squaretop manifold
DW450 fuel injectors
Walbro 190 fuel pump
Megasquirt pnp2
Supermiata QMax coolant reroute
Koyo 37mm radiator
Amsoil Dominator 10w30
e85
OEM 6spd
Miataroadster 6spd shifter kit
OEM 4.3 Torsen II
Supermiata 1.6 Puck Rigid Sport Clutch
Supermiata 1.6 Aluminum flywheel
Supermiata driveshaft
Supermiata clutch line
Energy Suspenion urethane diff bushings
Amsoil MTL in the trans
Amsoil SVG in the diff
1000/500 Gen2 Supermiata Xida Race
Racing Beat 54103 front swaybar
Supermiata adjustable rear swaybar
Supermiata swaybar endlinks
Energy Suspension urethane bushings
Sadfab offset front lower control arm bushings
Supermiata brake lines
G-Loc R18/R12 brake pads.
OEM 94-00 1.8 calipers
Centric blank 94-00 rotors
Motul RBF600 brake fluid
Singular Motorsports 5pc hood louver kit
Singular Motorsports AeroWing
-APR GT250 airfoil, APR endplates cut down to <12” length.
DiY Alumalite front splitter, 4” blade
DiY HDPE plastic airdam
CCP Fab OEM shape hardtop.
DiY poly rear window, 1/8”
DiY poly front windshield, hard coated outer, anti fog inner. 1/4”
15x8 949 Racing 6UL with 205/50/15 Hoosier R7
15x9 949 Racing 6UL with 225/45/15 Maxxis RC-1