Differences

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

--- osspeed21vzbv-spec [2026/08/01 11:45] – [Head Button/Cooling Head Specifications] nitroadmin
+++ osspeed21vzbv-spec [2026/08/02 20:01] (current) – [Carburetor Specifications] nitroadmin
@@ Line 1: / Line 1: @@
 ====== OS SPEED 21VZ-B V-Spec ======
+This is for both the original magnesium and the AL version.
 {{http://nitroenginewiki.com/images/osspeed13893/banner.gif}}
@@ Line 13: / Line 13: @@
 | Model | 21VZ-B V-Spec |
 | Evolution of | OS MAX 21VZ-B V-Spec |
-| Part # | 13893 |
+| Part # | 13893(MAG) / 13894(AL) |
 | MSRP | $469.99 |
 | Bore | 16.6mm / 0.654in |
 | Stroke | 16.0mm / 0.630in |
 | Displacement | 3.46cc/0.211cu in |
-| Weight | 320.5g/11.3oz |
+| Weight | 320.5g/11.3oz(MAG) / 361.8g/12.46oz(AL) |
+| Instruction Manual | N/A |
+| Exploded View | [[http://nitroenginewiki.com/images/osspeed13893/13893_13894_OSS_21VSpec.pdf|Click]] |
 ==== Crank Specifications ====
@@ Line 49: / Line 51: @@
 ==== Carburetor Specifications ====
-Uses OS 21H carburetor. Carb Needle settings are default after breakin.
+Carb Needle settings are default after breakin.
 {{ http://nitroenginewiki.com/images/osspeed13893/carb.gif}}
 ^Variant ^ Notes
-| Carburetor Size | 8mm |
+| Carburetor Size | OS 21H |
+| Carburetor Size | 9mm |
 | Carburetor Style | Slide |
 | Carburetor Material |Aluminum Body with Nylon insulator |
 | Carburetor Adjustment | 3 Needle |
-| Carb LSN | Part#13893 |
+| Carburetor Restrictors | 7mm, 8mm, 9mm |
-| Carb MSN | Part#13893 |
+| Carb LSN | - |
-| Carb HSN | Part#13893 |
+| Carb MSN | - |
+| Carb HSN | - |
 ==== Head Button/Cooling Head Specifications ====
-{{ http://nitroenginewiki.com/images/osspeed13893/coolinghead.gif}}
+{{ http://nitroenginewiki.com/images/osspeed13893/coolinghead.jpg?330x337}}
 ^Variant ^ Notes
 | Head Button | Turbo |
 | Supplied Glow Plug | OS P3 |
-| Cooling Head | Black Oxide coated Magnesium |
+| Cooling Head | Black Oxide coated Magnesium/Black anodized Aluminum |
@@ Line 91: / Line 95: @@
 ==== Performance ====
 ^ ^
-| Manufacturer Claimed Peak | 15.5° ABDC |
+| Manufacturer Claimed Peak | 2.5ps @ 34,000 |
 | X-Dyno Peak Power(HP) | 1.5 @ 26,000 |
 | X-Dyno Peak Torque(oz-in) | 59.82 @ 25,000 |
 | X-Dyno Peak RPM Measured | 42,750 |
-X-DYNO GRAPH HERE
+{{ http://nitroenginewiki.com/images/ptk2500/xdyno.jpg }}
+==== Variants ====
 ^Variant ^ Notes
-| OS Speed 21VZ-B V-Spec | Original, Magnesium cooling head, 320.5g/11.3oz, Part#13893 |
+| [[osspeed21vzbv-spec|OS Speed 21VZ-B V-Spec]] | Original, Magnesium cooling head, 21H Carb 320.5g/11.3oz, Part#13893 |
-| OS Speed 21VZ-B V-Spec AL | Same as original, Aluminum cooling head, 361.8g/12.46oz, Part#13894 |
+| [[osspeed21vzbv-spec|OS Speed 21VZ-B V-Spec AL]] | Same as original, Aluminum cooling head, 361.8g/12.46oz, Part#13894 |
-| OS Speed 21VZ-B V-Spec SpecII | Same as original, Drilled Aluminum cooling head, 349g/12.32oz, Part#13811 |
+| [[osspeed21vzbspecii|OS Speed 21VZ-B SpecII]] | Same as original, Drilled Aluminum cooling head, 21J Carb 349g/12.32oz, Part#13811 |
-| Protek 321B Samurai V2 | Same as Speed, Drilled Aluminum cooling head, 355g/12.52oz, Part#PTK-2500 |
+| [[protek321bsamurai|Protek 321B Samurai V2]] | Same as Speed, Drilled Aluminum cooling head, 355g/12.52oz, Part#PTK-2500 |
-| Ninja JX21 B01 | 5 port version of speed, OS 28XZ Case, no slugs in crank, Aluminum cooling head, 361.8g/12.46oz, Part#JX21B01 |
+| [[ninjajx21bo1|Ninja JX21 B01]] | 5 port version of speed, OS 28XZ Case, no slugs in crank, Aluminum cooling head, 361.8g/12.46oz, Part#JX21B01 |
-| Ninja JX21 B01A | Same as original JX, Drilled Aluminum cooling head, 374g/13.19oz, Part#JX21B01A |
+| [[ninjajx21bo1a|Ninja JX21 B01A]] | Same as original JX, Drilled Aluminum cooling head, 374g/13.19oz, Part#JX21B01A |