FAQ’s
Do I need Oversize or Undersize bearings?
Oversized = Same inside diameter with more material added to the outside of the bearing
(Block or Rods have been increased or bored).
Undersized = Same outside diameter with more material added to the inside of the bearing
(Crankshaft journals have been reduced or cut).
What are recommended thrust (bearing) clearances (end float)?
Up to 70mm (2.756″) journal: 0.10 – 0.15 mm (.004” – .006”)
70 – 90mm (2.756″ – 3.543″) journal: 0.15 – 0.20 mm (.006” – .008”)
Over 90mm (3.543″) journal: 0.20 – 0.25mm (.008” – .010”)
Do I need Aluglide, Race Series or Duraglide?
- For OEM build use Aluglide (Bi-metal A Series)
- For performance builds with bearings running crankshafts that have fillets and where engines run in the medium to high RPM range, use the Race Series (Tri-metal H Series with chamfered edges and ¾ oil grooves).
- Duraglide (Tri-metal P is the stiffest bearing we offer without chamfered edges and ¾ oil grooves). If contact patterns obtained with the Duraglide (P series) parts are too narrow, H (Race Series) bearings should be used. Contact pattern should ideally cover 2/3 to 3/4 of the bearing surface.
If you aren’t sure which type of performance bearing to start with, the H (Race Series) will be your best choice.
What is the relative load carrying comparison of ACL materials?
