ACL Race Series main bearings are tri-metal engine bearings designed for higher RPM conditions. Their combination of design, metallurgy and engineering supports demanding engine operation and bearing load management.
This main bearing set features 0.025 mm extra clearance. Increased eccentricity helps compensate for bore distortion at high RPM and assists in the formation of hydrodynamic oil films.
- High-strength overlay plate with reduced thickness for improved fatigue properties
- Increased crush for improved bearing retention in the housing
- No flash plating on the back for improved heat transfer and increased grip in the housing
- 3/4 grooved main bearings to optimize bearing load-carrying surface area and oil flow to the conrod bearings
- Tight, consistent wall tolerances to help maintain consistent clearances
Suitable for: Alfa Romeo 145 I (930), Alfa Romeo 146 I (930), Alfa Romeo 155 I (167), Alfa Romeo 164 I (164), Fiat Coupe I (175), Fiat Croma I (154), Fiat Ducato I / II (230), Fiat Fiorino I (146) / I (147), Fiat Palio I (178), Fiat Punto I (176), Fiat Regata I (138), Fiat Ritmo I, Fiat Tempra I (159), Fiat Tipo I (160), Fiat Uno I (146), Lancia Dedra I (835) and 5 more.
Engines: 1.9 TD, 1.7 TD, 2.0 16V Turbo, 2.0 8V Turbo, 2.0 Turbo, 2.0 16V, 2.0 SOHC, 2.0 16V Integrale, 1.6 HF Turbo, 2.0 8V Integrale, 1.9 D, 1.4 TD, 2.0 Turbo 16V, 1.6 SOHC, 2.0 8V (AR33601, AR67501, AR67203, AR06476, AR67502, 175A1.000, 836A3.000, 154C6.000, 154D1.000, 154A1.000, 154C5.000, 154A2.000, 154C4.046, 834C.146, 154E1.000, 230A3.000, 230A4.000, 280A1.000, 147D7.000, 176A3.000, 176A5.000, 176B7.000, 831D1.000, 178C9.066 …). Please check your vehicle’s engine code (registration document or VIN) before ordering; if in doubt, contact us and we will check for you.
Sizes
STD is the standard size for an unground crankshaft. Undersizes (−0.25 mm, −0.50 mm …) are for a reground crank, and “+0.025 mm clearance” (X) is for highly stressed engines. Your machine shop chooses the size after measuring.
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