Yamaha Xs400 Xs360 Cylinder Head Rebuild Service Valve Job on 2040-parts.com

This listing is for cylinder head rebuild services provided on customer supplied cylinder heads. Price includes parts and labor for disassembly, cleaning and inspection of all parts, all 4 valve guides, valve seat machining, re-grinding the valves, final assembly with new viton valve seals. The price of this listing of for the head only and does not include work on the rocker cover or components. Head will be shipped back ready to install.

GUIDES- Phosphor bronze liners provide excellent heat conductivity and wear resistance exceeding the OEM guide specifications. It also provides an economical alternative to solid bronze guides, especially in applications where they are not available from the aftermarket. The process involves boring the stock guide and pressing in the phosphor bronze sleeve. It is then swaged in place and precision diamond honed to the correct clearance.

SEATS- Valve seats are cut using carbide cutters in Serdi equipment. This provides a precision multi-angle valve job which far exceeds the performance of the factory seat profiles. Valve faces are re-ground in centerless valve grinding equipment and the tips are ground to remove pitting from tappets. Final vacuum testing ensures a quality valve job.

ASSEMBLY- All parts are carefully cleaned and inspected. Only serviceable parts will be re-used. Heads are re-assembled with new quality viton seals and assembly lube. Deck surfaces are checked for flatness and dressed.

Performance upgrades are also available including porting and custom valves in both standard and oversize.

Once this service is purchased simply ship your fully assembled head to our shop and they will be completed and sent back within one week. We offer complete cylinder head machine services and custom valve train components specializing in vintage Japanese applications. Thanks for looking!