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COMETIC MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for today's high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flouroelastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.
| Sizes | STD, .025, .25, .50 |
| Oil Clearance | Standard |
| Half Type | Identical Halves |
| Material | Tri-Metal |
| Min. Std Shaft Size | 2.3616in / 59.984mm |
| Max. Std Shaft Size | 2.3622in / 60.000mm |
| Min. Std Tunnel Size | 2.5197in / 64.000mm |
| Max. Std Tunnel Size | 2.5205in / 64.020mm |
| Max Wall at Crown | 0.0789in / 2.005mm |
| Max Overall Length | 0.7480in / 19.00mm (8297H/HX) 0.5953in / 15.12mm (8298H/HX) 0.8642in / 21.95mm (8299H/HX - Flange) |
| Weight | 0.31 |
| Notes | Thrust in #3 pos. |
 |
MAIN BEARING SET |
|
| Part# | ||
| 5M8309H |
5M8309HX |
|
| Sizes | STD, .025, .25, 0.5 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Identical Halves | |
| Material | Tri-Metal | |
| Min Std Shaft Size |
2.3616in / 59.984mm |
|
| Max Std Shaft Size |
2.3622in / 60mm |
|
| Min Std Tunnel Size |
2.5197in / 64mm |
|
| Max Std Tunnel Size |
2.5205in / 64.02mm |
|
| Max Wall at Crown |
0.0789in / 2.005mm |
0.0784in / 1.992mm |
| Max Overall Length |
0.748in / 19mm (8297H/HX) 0.5953in / 15.12mm (8298H/HX) 0.9035in / 22.95mm (8309H/HX - Flange) |
|
| Notes | Thrust in #5 pos. | |
|
Diagram |
|
|
| Sizes | STD, .025, .25, .50 |
| Oil Clearance | Standard |
| Half Type | Identical Halves |
| Material | Tri-Metal |
| Min. Std Shaft Size | 2.3616in / 59.984mm |
| Max. Std Shaft Size | 2.3622in / 60.000mm |
| Min. Std Tunnel Size | 2.5197in / 64.000mm |
| Max. Std Tunnel Size | 2.5205in / 64.020mm |
| Max Wall at Crown | 0.0789in / 2.005mm |
| Max Overall Length | 0.7480in / 19.00mm (8297H/HX) 0.5953in / 15.12mm (8298H/HX) 0.8642in / 21.95mm (8299H/HX - Flange) |
| Weight | 0.31 |
| Notes | Thrust in #3 pos. |
|
Bore size |
99.50mm |
|
Stroke |
79.00mm |
|
|
8.5:1 - 56cc cylinder head 9.1:1 - 50cc cylinder head |
|
OEM compression ratio (CR) |
8.0:1 |
|
Dome volume (CC) |
-19.25cm3 |
|
Compression height (CH) |
30.70mm |
|
Pin diameter |
23mm |
|
Features |
4032 material |
|
Fits for |
Subaru WRX STI 2.5 (EJ257) |
|
|
|
|||||||||||||||||||
| Quantity | 1 | 2 | 2 | ||||||||||||||||||
| Crankshaft | 60.000 / 59.985 | 60.000 / 59.985 | 60.000 / 59.985 | ||||||||||||||||||
| Housing | 64.000 / 64.021 | 64.000 / 64.021 | 64.000 / 64.021 | ||||||||||||||||||
| Max Wall | 2.004 | 2.004 | 2.004 | ||||||||||||||||||
| Max Length | 22.962 | 18.999 | 15.113 |
|
Bore size |
99.75mm |
|
Stroke |
79.00mm |
|
|
8.5:1 - 56cc cylinder head 9.1:1 - 50cc cylinder head |
|
OEM compression ratio (CR) |
8.0:1 |
|
Dome volume (CC) |
-19.25cm3 |
|
Compression height (CH) |
30.70mm |
|
Pin diameter |
23mm |
|
Features |
4032 material |
|
Fits for |
Subaru WRX STI 2.5 (EJ257) |
Kit includes:
1. Genuine Subaru 79.00mm stroke crankshaft
2. FCP Engineering H-beam connecting rod kit
3. JE Pistons kit (Bore size 92.50mm or 93.00mm CR 8.5:1)
4. King Racing connecting rod bearing set
5. King Racing main bearing set
|
Bore size |
100.00mm |
|
Stroke |
79.00mm |
|
|
8.5:1 - 56cc cylinder head 9.1:1 - 50cc cylinder head |
|
OEM compression ratio (CR) |
8.0:1 |
|
Dome volume (CC) |
-19.25cm3 |
|
Compression height (CH) |
30.70mm |
|
Pin diameter |
23mm |
|
Features |
4032 material |
|
Fits for |
Subaru WRX STI 2.5 (EJ257) |
|
Product detailed specification |
|
|
Bore size |
92.50mm |
|
Stroke |
75.00mm |
|
Mahle compression ratio (CR) |
8.0:1 |
|
OEM compression ratio (CR) |
8.0:1 |
|
Dome volume (CC) |
-12cm3 |
|
Compression height (CH) |
32.70mm |
|
Pin diameter |
23mm |
|
Features |
PowerPak Plus 2618 Alloy & Hard Anodized Top Ring Groove For Extreme Duty Applications |
|
Fits for |
Subaru Impreza WRX STI - 2.0 16V (EJ20, EJ205, EJ207) |
|
Product detailed specification |
|
|
Bore size |
93.00mm |
|
Stroke |
75.00mm |
|
Mahle compression ratio (CR) |
8.0:1 |
|
OEM compression ratio (CR) |
8.0:1 |
|
Dome volume (CC) |
-12cm3 |
|
Compression height (CH) |
32.70mm |
|
Pin diameter |
23mm |
|
Features |
PowerPak Plus 2618 Alloy & Hard Anodized Top Ring Groove For Extreme Duty Applications |
|
Fits for |
Subaru Impreza WRX STI - 2.0 16V (EJ20, EJ205, EJ207) |
