Approved by the EXPERT

Reamers

The mechanical reamer is essential to ensure the adjustment and calibration of the guide hole after its installation in the cylinder head and correct deformations resulting from machining, ensuring perfect clearance between the guide and the valve stem.

Benefits of RIO reamers for valve guides

  • Developed with carbide inserts, the reamers come with parallel edges with flutes to avoid cutting grooves.
  • Self-centering guides for manual adjustment.
  • Service life up to 10 times longer than competitors: treated alloys for greater durability.
  • Table with indication of size and length in the product portfolio.

Did you know?

RIO valve guide reamers are precise and reliable to ensure the finishing of the guide’s internal diameter, thus ensuring the ideal clearance for the correct performance of the valves. This extends the service life of the parts connected to the cylinder head and avoids the waste of oil and fuel.

Practically all RIO valve guides have a compatible reamer, indicated in the product portfolio, with a length and diameter ratio that match the standard of the guides.