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Oil thermostatic by pass valves.

 
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waltmurphy(at)charter.net
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PostPosted: Sun Aug 05, 2007 11:12 am    Post subject: Oil thermostatic by pass valves. Reply with quote

Question:

Does anyone know just exactly how far the vern a therm ( by pass valve )
is supposed to stretch when at temperature?

We have an oil temp problem and the by pass valve was replaced. ( ECI
PMA replacement part ) . It did not solve the problem. Looking at the
NEW part there was NO wear mark at all on the seating face of the valve.
Placing it into a cup of boiling water it grew 0.107 from the ambient
length. I also measured another ( old Lycoming part ) it grew 0.180

Also when I look at the ECI part in the oil filter adapter housing , it
sits deeper than the Lycoming part. ( It appears that the ECI part would
need to "grow" over 1/4 inch to make contact compared to maybe 1/16 to
1/8 inch on the Lycoming part.

Thanks,
Walt


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esmith6(at)satx.rr.com
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PostPosted: Sun Aug 05, 2007 12:30 pm    Post subject: Oil thermostatic by pass valves. Reply with quote

Walt...................Lycoming Engines, 652 Oliver St., Williamsport, Pa.
17701.........570-323-6181..........Ask for "SUPPORT CENTER." 0800-1700
EDT, Mon-Fri...I'm sure the engineers will have an answer for
you.....................................www.lycoming.textron.com/index.jsp
CHEERS!!!! and good luck.............Gene Smith.

---


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