Crankshaft Main Bearing Set Model or Series: Race Series
Year: 1983 to 2003
Make: Audi, Volkswagen
Model: A3, A4, A6, TT, 80, 90, 100, Golf, Jetta, Passat
Engine: 1.6L, 1.8L, 2.0L
Bearing Undersize: 0.250 mm
Usage: Performance
Construction: Tri Metal
Backing Layer Material: Steel
Bearing Lining or Intermediate Material: Copper, Lead, Tin
Overlay Material: Lead, Tin, Copper
Coated: No
Chamfered: Yes
Bearing Width: 0.728 in.
Standard Bearing Thickness (Without O/S): 0.099 in.
Standard Crank Pin Diameter (Without O/S): 2.124 in.
Standard Housing Diameter (Without O/S): 2.323 in.
Quantity: Sold As Set (5/pkg)
- Full (180 degree) grooved uppers with matching partial groove in lowers.
- Reduces interruption to big end oil supply.
- Tapered groove run-out.
- Smooths big end supply cut-off avoiding pressure pulsing and cavitation.
- A blend of characteristics to provide high strength and excellent seizure resistance.
- No flash plating is applied to further improve bearing retention and maximise heat transfer.
- Improved bearing retention from higher radial contact pressure.
- Locks the bearing into the housing.
- More effective heat dissipation through improved thermal transfer.
- Definition: Gradual reduction in wall thickness between the crown and parting line.
- ACL Race Series performance engine bearings feature increased eccentricity to improve shape adaptation to compensate for bore distortion at high speed operation.
- Assists in the formation of hydrodynamic oil film.
- Accommodate larger fillet radii on performance crankshafts.
ACL Race Series performance engine bearings are manufactured to exacting tolerances. Micron tolerance machining supported by precision measurement systems delivers consistent accuracy to keycharacteristics like wall thickness and crush. This ensures reliable fit and helps maintain consistent clearances.
PerformanceParts is an authorized reseller of ACL
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