
Product detailed specification
Manufacturer: FCP Engineering
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Product detailed specification |
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Bore size |
84.00mm |
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Stroke |
75.00mm |
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Wiseco compression ratio (CR) |
8.8:1 / 9.3:1 |
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OEM compression ratio (CR) |
10.5:1 |
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Dome volume (CC) |
-13.5cm3 |
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Compression height (CH) |
33.20mm |
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Pin diameter |
22mm |
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Features |
Accepts Turbo and Nitrous; FSR piston skirt |
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Fits for |
BMW E36, E34 - 2.5 / 2.8 24V (M50B25 / M50B28) |


COMETIC MLX (Multi-Layer Stopper) gaskets utilize an integrated stopper layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. MLX technology can be found in some head gaskets and are made from the same materials as our MLS Head Gaskets. No sealants or re-torque required.

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Part number starting with 330 |
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Athena advantages |
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Reinforced material |
Asbestos free composite raw material OE approved |
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Stainless steel ring (AISI304) |
Separate stainless steel rings assure maximum sealing around cylinder bore also on NOS and/or turbo charged engine where boost is over 2 bars. No head and block machining required |
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Silicon beading |
Silicon-based beading is applied on critical areas to improve sealing around all cooling water and oil passages |

Spring data:
Seat pressure [email protected]
Open (lift) pressure 215lbs@12mm
Max lift. 18.30mm
Rate 11.20lbs/mm
Spring coil bind 22.00mm
Outer spring outer diameter: 30.0mm
Outer spring inner diameter: 21.80mm
Inner spring outer diameter: 21.00mm
Inner spring inner diameter: 15.50mm
Set includes:
Dual springs: 16 pcs. SPR-H1022D
Titanium retainers: 16 pcs. RET-K20A2/T2
Seats: 16 pcs. SEAT-H1020D

| Sizes | STD, .025, .25 |
| Oil Clearance | |
| Half Type | |
| Material | |
| Min. Std Shaft Size | 42,971 |
| Max. Std Shaft Size | 42,987 |
| Min. Std Tunnel Size | 46,000 |
| Max. Std Tunnel Size | 46,013 |
| Max Wall at Crown | 1.495 |
| Max Overall Length | 16.63 |
| Weight | 0.12 |
| Notes |


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Product detailed specification |
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Bore size |
83.00mm |
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Stroke |
92.80mm |
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JE Pistons compression ratio (CR) |
9.5:1 |
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OEM compression ratio (CR) |
10.5:1 |
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Dome volume (CC) |
-8.10cm3 |
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Compression height (CH) |
29.30mm |
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Pin diameter |
20mm |
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Features |
Ultra series |
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Fits for |
Audi / VW - 2.0 TFSI EA113 (AXX, BGB, BPJ, BPY, BWA) |

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.
