
|
Product detailed specification |
|
|
Bore size |
81.50mm |
|
Stroke |
87.20mm |
|
MAHLE compression ratio (CR) |
12.4:1 |
|
OEM compression ratio (CR) |
10.0:1 |
|
Dome volume (CC) |
9.1cm3 |
|
Compression height (CH) |
30.00mm |
|
Pin diameter |
21mm |
|
Features |
4032 alloy |
|
Fits for |
Honda - 1.8 16V (B18C1) |

| ENGINE BEARINGS | ||
![]() |
MAIN BEARING SET |
|
| Part# | ||
| 5M1644H |
5M1644HX |
|
| Sizes | STD, .25, .50 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Upper & Lower | |
| Material | Tri-metal | |
| Min Std Shaft Size | 2.1243in / 53.958mm | |
| Max Std Shaft Size | 2.1251in / 53.978mm | |
| Min Std Tunnel Size | 2.3228in / 59.000mm | |
| Max Std Tunnel Size | 2.3236in / 59.019mm | |
| Max Wall at Crown | 0.0985in / 2.502mm | 0.0980in / 2.489mm |
| Max Overall Length | 0.728in / 18.49mm | |
| Notes | Set contain 6 x 1648H and 4 x 1644H shells. Use 1648H shell in #4 position as upper and lower. | |
|
Diagram |
|
|

|
Product detailed specification |
|
|
Bore size |
83.50mm |
|
Stroke |
83.60mm |
|
Wiseco compression ratio (CR) |
8.5:1 |
|
OEM compression ratio (CR) |
8.0:1 |
|
Dome volume (CC) |
-0.5cm3 |
|
Compression height (CH) |
29.75mm |
|
Pin diameter |
20mm |
|
Features |
Accepts Turbo and Nitrous |
|
Fits for |
Nissan 180SX (S13) 1.8 16V (CA18DET) |

| Sizes | STD, .025, .25, .50 |
| Oil Clearance | Standard |
| Half Type | Upper & Lower |
| Material | Tri-Metal |
| Min. Std Shaft Size | 2.6373in / 66.987mm |
| Max. Std Shaft Size | 2.6378in / 67.000mm |
| Min. Std Tunnel Size | 2.8346in / 71.999mm |
| Max. Std Tunnel Size | 2.8352in / 72.014mm |
| Max Wall at Crown | 0.0981in / 2.491mm |
| Max Overall Length | 0.8858in / 22.5mm (8088H/HX) 0.7677in / 19.5mm (8089H/HX) |
| Weight | 0.45 |
| Notes | This part has no notch. |

The GenV HyperGate45 HP external wastegate is a Motorsport proven, cost effective external wastegate with base spring pressure options of up to 50psi! Add to that some reference signal manipulation and you have some serious boost! The GenV provides extensive user configurability, world leading extended thermal performance, fatigue resistance and best in class flow performance for optimum control and longevity.
The GenV External Wastegate from Turbosmart was a ground up rework of a classic and the only feature that rolled over from the Gen4 range was the mounting orientation. CFD optimized and validated in-house for maximum flow and thermal management, the GenV range has more features, options and performance than any other gate like it.
A direct fit upgrade to all Gen4 Turbosmart wastegates and feature our unique collar-locking system, variable actuator cap and base for easy, 360 degree optional routing of reference hoses, strap-type V-band clamps, optional liquid-cooling provision and 1/8″ NPT reference ports.



|
|||||||
| Quantity | 4 | ||||||
| Crankshaft | 48.019 / 48.001 | ||||||
| Housing | 51.587 / 51.600 | ||||||
| Max Wall | 1.775 | ||||||
| Max Length | 20.470 |
