Bryan,

It is not just the vernatherm. The vernatherm seat can also be the problem. Again, Lycoming has a tool to ream the "seat" in certain models of the 4 cylinder engine. I don't know about the 6 cylinder engines

Lorn

> From: Bryan Wullner <vonjet@gmail.com>
> Date: July 20, 2010 7:57:16 AM EDT
>
> Thank you guys for all the suggestions.
> How would I check the differential pressures in the cowling inflight?
>
> Craig, the oil cooler I have now is a vans aircraft 7 vane cooler. I have a feeling its not doing the job needed. I have a stewart warner 9 vane cooler I will be switching too.
>
> So for now, oil cooler changed, Vernatherm will be checked and then I will go from there.
>
> Bryan

--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,700 hrs, N31161, Y47, SE Michigan