Cars MX5 - superjamie/lazyweb GitHub Wiki
Mazda MX5
There is already a buttload of information out there about these cars, pretty much anything you want to know has already been done and documented, often with photographs and videos. Here is my small drop in the ocean.
Focus on first generation NA/Mk1 (1989-1997) unless otherwise specified.
Antenna Delete
- M5x20 stainless button head screw, M5 10x1 mm nylon washer. Needs the manual (non-electronic) antenna
- If you have the electric antenna, take the whole antenna out and use a grommet in the body.
Parts
- Brake Caliper Bleeder, Rear - M8 x 1.0 mm, 34mm long - Good Win Racing
- Brake Caliper Bleeder, Rear - M7 x 1.0 mm, 34mm long - Good Win Racing
- Crush Washer, brakes - ID 10mm, OD 15mm - MX5OX
- Crush Washer, Sump/Gearbox/Diff - ID 18mm, OD 24mm - Mania
- Engine Sump Plug - M14 x 1.5 mm thread
- Engine Oil Cap - M35 x 4.0 mm thread (sometimes called M36)
- Exhaust Manifold Studs (MiataRoadster Kit)
- Nine M10x1.25, 48mm long, grade 8 studs, yellow zinc
- Nine M10x1.25 flanged serrated nuts, silver zinc
- Nine M10 Nord-Lock washers
- M10x1.25 tap to chase threads (imo use a thread chaser, not a tap)
- anti-seize for nut end of studs
- Cotronics Resbond 907TS threadlock
- Sway Bar, Front 19mm - bushing NA01-34-156A (cross-ref BPS, Rockauto)
- Sway Bar, Rear 12mm - bushing FB01-28-156 (cross-ref BPS)
- Frankenstein cover side screw - M4 10mm countersunk
- Soft top / hard top screws, class 10.9 flanged black zinc oxide
- Latch - Original M6 ~18mm with JIS+3 head (Warning: do not use Phillips)
- M6 20mm - Wurth AU, McMaster USA
- Striker - Original M8 20mm with Torx T40 head
- M8 20mm - Wurth AU, McMaster USA
- Radiator Fan Switch (front of motor) - Tridon TFS114
- Rear upper mudflap clip - NA12-51-876A (huge thanks to IL Motorsport)
Springs
| Name | Front Rate & Height | Rear Rate & Height | Source |
|---|---|---|---|
| Flyin Miata(old rear bind) | 342 lbf / 6.12 kgf | 228 lbf / 4.08 kgf | Fatcat |
| Flyin Miata(2006 redesign) | 318 lbf / 5.69 kgf | 233 lbf / 4.17 kgf | Fatcat, FM |
| H&R Race | 240-270 lbf / 4.30-4.83 kgf-38mm | 220-260 lbf / 3.94-4.66 kgf-38mm | Good Win Racing |
| H&R Sport 29839-1 | 257 lbf / 4.59 kgf-35-40mm | 211 lbf / 3.77 kgf-35-40mm | OzRacer, H&REmail rates: 45 N/mm 37 N/mm |
| Tein S-Tech | 235 lbf / 4.21 kgf-19mm | 168 lbf / 3.01 kgf-29 mm | Fab9, Tein |
| Espelir Super Downsus ESM-058 | 213 lbf / 3.8 kgf-32-37 mm | 179 lb / 3.2 kgf-27-32 mm | RHDJapan |
| King Springs(KMFL-52 front, KMRL-53 rear) | 165-215 lbf / 2.96-3.85 kgf-30mm | 105-160 lbf / 1.88-2.86 kgf-30mm | |
| RSR Down Series M020D | 196 lbf / 3.5 kgf-30-35 mm | 140 lbf / 2.5 kgf-15-25 mm | RHDJapan |
| Eibach E5517-140 Kit(F5517001 front, F5517002 rear) | 191.28 lbf / 3.42 kgf-25-30mm | 114.2 lbf / 2.04 kgf-25-30mm | Eibach, ManiaEmail rates: 33.5 N/mm 20 N/mm |
| Pedders Low(2332 front, 2333 rear) | 189.2 lbf / 3.39 kgf-25mm | 167.2 lbf / 2.99 kgf-25mm | |
| Pedders Std Height(7332 front, 7333 rear) | 187 lbf / 3.35 kgf | 99 lbf / 1.77 kgf | |
| Racing Beat Street | 157 lbf / 2.81 kgf-8.5mm | 106 lbf / 1.90 kgf-25mm | Good Win Racing |
| Mazda (Showa) 91-93LE and R-pkg 93-96 | 154 lbf / 2.75 kgf | 97 lbf / 1.74 kgf | Fatcat |
Could not find rates for:
- Anything listed at DC, all seem discontinued? https://www.dcperformance.co.uk/performance/mazda/mx5.html
- Apex APX-100-4000 (-30 mm)
- Cobra CO4620 (-30mm)
- Spax S022022 (-30mm)
- V-Maxx 35 MA 08 (-30 mm) - V-Maxx
- V-Maxx 35 MA 05 (-45-50mm) - V-Maxx
- etc...
5X Racing DIY Bilstein
https://5xracing.com/pt-3308-miata-spring-rate-guide.html
| Name | Front Rate | Rear Rate |
|---|---|---|
| Street Touring | 350 lbf / 6.25 kgf | 275 lbf / 4.91 kgf |
| Sport Touring | 400 lbf / 7.14 kgf | 325 lbf / 5.80 kgf |
| Dual Purpose | 450 lbf / 8.04 kgf | 375 lbf / 6.70 kgf |
| Track Day | 550 lbf / 9.82 kgf | 400 lbf / 7.14 kgf |
| Race | 600 lbf 10.71 kgf | 450 lbf / 8.04 kgf |