Reed Stops & Reed Valve Inspection

[boatmon345]

Rebuilding 1997 Yamaha 150HP 2 stroke S150TXRV powerhead.<br />( Click here to view blog with pictures )<br />(first time rebuilder here)<br /><br />I inspected the intake. The reed valves themselves look clean and shiny with the exception of 2 which each have a tiny eigth inch area of surface rust. All reed valves are stiff against their seats (no deformaties).<br /><br />All my reed stops are unevenly dulled which I am not too concerned about. 3 reed stops have some rust on them, mostly surface, but the stops have pits in them also. <br />For Picture Click Here <br /><br />I assume I can use fine sandpaper and remove the rust. Will these reed stops be OK or is it recommended that I replace them, and what about the reed valves?<br /><br />Thanks.

 

[rodbolt]

Re: Reed Stops & Reed Valve Inspection

the stops can be cleaned and measured, any rust/pitting other than stains I would replace the reed. rust/pits are stress cracks.<br /> all the stops do is limit the amount of reed opening, if they open to far they break. not enough and engine performance can suffer.