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Oil thermostatic by pass valves.

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waltmurphy(at)charter.net
Guest

Posted: Sun Aug 05, 2007 11:12 am Post subject: Oil thermostatic by pass valves.

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
Guest

Posted: Sun Aug 05, 2007 12:30 pm Post subject: Oil thermostatic by pass valves.

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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