ECI Valve Spring Lower Seat PN's

[apkp777]

Hey, anyone know the answer.

The Lycoming Parts Catalog shows a different part number for the intake and exhaust lower spring seats. ECI sent me all the same part number (8 total). I am assuming that the old part number is obsolete and they are now using the same part number for both valves.

The springs are identical however the valve guides are different diameters so the valve seat for one valve is pretty close on the fit but the valve seat on the other is pretty loose. (see picture)

I can't find any documentation that makes this revision (haven't really looked too hard yet). Maybe someone out in VAF knows the answer.

[IMG][/IMG]

[Radomir]

Look on ECI's website:

http://www.eci.aero/pdf/00-2.pdf

[apkp777]

Thanks Radomir, I actually looked through all my printed service instructions and skipped over that one. I appreciate your quick response. Now I can sleep tonight. (I finished all the cylinders)