Differences

This shows you the differences between two versions of the page.

--- notorquemiata-2 [2022/08/23 23:10] – imakeyoufast
+++ notorquemiata-2 [2023/09/01 03:51] (current) – imakeyoufast
@@ Line 1: / Line 1: @@
-====== Slow Boring No Torque Miata (Spring 22) ======
+====== Slow Boring No Torque Miata (Spring <del>22</del>23) ======
-In the current state, the car has around 230whp and is, at least to this point, reliable even under heavy use. Octane requirement is 95 RON / 91 AKI, this seems reasonable for 9.5:1 and 0.6 bar (9 psi). The intake air temperature is only 10 K above ambient temperature which leads to the conclusion that the current setup is somewhat efficient.
+===== Plan =====
+==== Block ====
+  * Mazda BP6D Block with 10.0:1 Pistons
+  * Oliver Conrods
+  * ARP Main Studs
+  * ARP Head Studs
+  * Boundary Stage 2 Oil Pump
+  * Oil Pan Baffles
+  * Hastings Rings | 30 Euro
+  * ACL Main Bearings | 100 Euro
+  * ACL Rod Bearings | 60 Euro
+  * Head Gasket | 30 Euro
+  * Honbürste | 80 Euro
+==== Head ====
+  * Mazda BP6D VVT Head
+  * Porting
+  * Adjustable Chinese Exhaust Cam Gear
+  * CatCams Valve Springs | 170 Euro
+  * Valve Stem Seals MAZDA!! | 200 Euro
+  *
+===== Long Story =====
+In the current state, the car has around <del>230</del>250whp and is, at least to this point, reliable even under heavy use. Octane requirement is <del>95</del>102 RON / <del>91</del>95 AKI, this seems reasonable for 9.5:1 and <del>0.6</del>0.82 bar (<del>9</del>12 psi). The intake air temperature is only 10 K above ambient temperature which leads to the conclusion that the current setup is somewhat efficient.
 The goal for the next stage should be a significant gain in power while maintaining reliability and practicability.
@@ Line 32: / Line 58: @@
 ===== Constraints and Limitations =====
   * Torque output should be under 250lb/ft / 340nm (at the wheels)
-  * Octane requirement **must** be ordinary 98 RON or lower. 100 / 102 / E85 is not an option.
+  * <del>Octane requirement **must** be ordinary 98 RON or lower. 100 / 102 / E85 is not an option.</del> fuck it
   * Engine should not be knock limited, even under harsh conditions (45 C ambient / track use)
@@ Line 38: / Line 64: @@
   * Target RPM
     * 105mm sc: 8500
-    * 100mm sc: 8100
+    * 100mm sc: 8100 - 161 mph / 259 kmh <-- current state
-    * **95mm sc: 7700**
+    * **95mm sc: 7700** (101 Euro + S&H) - 153 mph / 246 kmh
-    * 90mm sc: 7300
+    * 90mm sc: 7300 (81 Euro + S&H)
-  * Pistons: Compression Ratio, Bore, Brand/Model
-  *
+mm would be "optimal" but would limit rpm to 7700.
+Smaller pulley would lead to more belt slip probability.
 ===== Engine Block (draft) =====
-  * Pistons: Wiseco K590M84 84mm 10.0:1
+  * Pistons: Wiseco K590M84 84mm 10.0:1 OR Mazda NB2 83mm 10.0:1 used with new hastings (2C4651) rings - cost: 30 Euro
   * Conrods: Oliver A-Beam
@@ Line 53: / Line 81: @@
   * Rod Bearings: ACL Race
   * Main Bearings: ACL Race
+  * Thrust Bearing: Mazda
   * Oil Pump: Boundary Stage 2
 ===== Head (draft) =====
   * VVT
+  * Manley Intake Valves (Back-Cut)
+  * CatCams followers
+  * CatCams Springs
+  * 6mm Lash Caps
   * Tomei Cams, [[camshaftsbp|why?]]
 {{::bp-ve-252-10.8_256-10.0e.png?800|}}