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ACL Main Bearings 4M2505H-STD; Race Series Standard 2.557 in. for Nissan 3.5L, 3.7L, 3.8L VQ35HR, VQ37VHR, VR38DETT
$178.00
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Details
- 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.
- 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.
Product Description
ACL Race Series performance engine bearings are manufactured to exacting tolerances. Micron tolerance machining supported by precision measurement systems delivers consistent accuracy to key
characteristics like wall thickness and crush. This ensures reliable fit and helps maintain consistent clearances.
Specifications
- Main Bearings Series:
- Race Series
- Make:
- Nissan
- Engine:
- 3.5L, 3.7L, 3.8L VQ35HR, VQ37VHR, VR38DETT
- Bearing Undersize:
- Standard
- 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:
- 0.790 in.
- Standard Bearing Thickness (Without O/S):
- 0.099 in.
- Standard Crank Pin Diameter (Without O/S):
- 2.557 in.
- Standard Housing Diameter (Without O/S):
- 2.756 in.
- Quantity:
- Sold As Set (4/pkg)
