Honda motorcycle parts
Choose your model and year to see parts listed for your bike.
Choose your model and year to see parts listed for your bike.
1982 Honda CB900C Custom · Valvetrain Parts Buying guide
Honda’s 1982 addendum updates the cold-clearance checking sequence using two marks on the exhaust camshaft. Measure between the cam and lifter shim in the specified positions, then record the installed thickness. Stem seals and inner spring seats are separate head-rebuild parts.
25mm valve shim assortmentTwenty shims in ten selected sizes, with two of each and a storage case.View part
Individual valve-stem sealSold individually; sixteen seals are specified for a complete engine set.View part
Inner valve spring seatIndividual inner spring seat referencing 14776-422-000, with 1982 Custom application.View part
The kit contains two each of 2.30, 2.40, 2.50, 2.55, 2.60, 2.70, 2.80, 2.90, 3.00 and 3.10mm. Honda’s selection method uses the measured clearance and removed shim thickness. A size missing from this assortment may need an individual purchase; do not fit the nearest convenient size.
The stem seal controls oil around the valve stem; the inner spring seat supports the inner valve spring. Inspect the valve, guide and spring hardware as separate components. Honda calls for new stem seals during head assembly, but replacing seals does not repair excessive guide clearance or damaged spring seats.
Use the cam-index sequence in Honda’s 1982 addendum, section 26-10, with the engine cold. It identifies the valve groups to measure at each position. The shared 25mm shim diameter is not a substitute for that checking procedure.
No. Compare your calculated requirements with the ten listed thicknesses and two-of-each quantities. Honda’s range extends beyond this particular assortment, and individual valves can need different sizes.
Inspect them rather than treating them as the same service item. A seal controls oil at the stem, while an inner seat supports its spring. Replace damaged hardware and keep inner and outer seats in their documented positions; the seal purchase does not include them.
Send your model and year, plus photos of your existing part and any changes to the original setup.
Select your exact model and year to narrow your results.
Choose your model and year.