You can view photos of a cylinder head service on our website under the menu option "Pictures cylinder head overhauling"

Unleaded conversion & cylinder head overhaul R45 to R100 1987 includes:

• Bead blasting of cylinder heads
• renew and hone valve guides
• replace exhaust valve seats with unleaded ones
• re-seat valves
• skim cylinder head to the cylinder site
• removal and installation of valves
• renewal of valves, guides and springs.

R45 and R65 models get valves with 8mm stems and the guides were upgraded.