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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 |
| ENGINE BEARINGS | ||
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CON ROD BEARING SET |
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| Part# | ||
| 4B1956H |
4B1956HX |
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| Sizes | STD, 025, .25 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Identical Halves | |
| Material |
Tri-metal Hardened steel backs |
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| Min Std Shaft Size |
1.7709in / 44.98mm |
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| Max Std Shaft Size |
1.7717in / 45mm |
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| Min Std Tunnel Size |
1.8898in / 48mm |
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| Max Std Tunnel Size |
1.8906in / 48.02mm |
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| Max Wall at Crown |
0.0592in / 1.504mm |
0.0587in /1.491 mm |
| Max Overall Length |
0.7283in / 18.5mm |
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| Notes | ||
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Diagram |
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Product detailed specification |
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Bore size |
84.00mm |
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Stroke |
89.60mm |
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JE Pistons compression ratio (CR) |
9.5:1 |
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OEM compression ratio (CR) |
10.2:1 |
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Dome volume (CC) |
-21.3cm3 |
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Compression height (CH) |
31.60mm |
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Pin diameter |
22mm |
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Features |
Accepts Turbo and Nitrous; Ultra series |
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Fits for |
BMW - 3.0 24V Turbo (N54B30) |
