X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 15 Nov 2005 21:41:10 -0500 Message-ID: X-Original-Return-Path: Received: from imo-m17.mx.aol.com ([64.12.138.207] verified) by logan.com (CommuniGate Pro SMTP 5.0.1) with ESMTP id 831404 for lml@lancaironline.net; Tue, 15 Nov 2005 10:27:26 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.207; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m17.mx.aol.com (mail_out_v38_r6.3.) id q.27.7ed2743d (17377); Tue, 15 Nov 2005 10:26:30 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <27.7ed2743d.30ab5825@aol.com> X-Original-Date: Tue, 15 Nov 2005 10:26:29 EST Subject: Re: [LML] Re: What Should My CHTs and Oil Temps Be? X-Original-To: lml@lancaironline.net X-Original-CC: MikeEasley@aol.com MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1132068389" X-Mailer: 9.0 Security Edition for Windows sub 5300 X-Spam-Flag: NO -------------------------------1132068389 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 11/15/2005 8:39:11 A.M. Central Standard Time, MikeEasley@aol.com writes: The jump in temps occurred in the middle of an oil change, the first run with regular oil, after the break-in oil was removed. I used the Phillips Multigrade break-in oil. I am using Shell 15W-50 Multigrade oil now. Mike, Some years ago there was a problem with the plastic seal inside the cap making it into the oil being poured in the filler and blocking the flow internally. Shouldn't happen theses days unless you used some really old 15W/50 bottles of oil. <<< Oil pressure has remained constant at around 45 in cruise. >>> That seems too low. In my Lyc I try to keep it in the 70-80 psi range. What is the range in your engine manual? is 45 at the low end? Do you have an oil pressure adjustment? If the pressure is too low, certain areas may not be getting the oil they should be receiving. <<< So the birds nests must be a coincidence. >>> Hmmmmm...... Grayhawk is suspicious! Have you flown through heavy rain to clean out the engine compartment? How about nesting materials blocking cylinder base fins? Baffling should be pretty tight around the bottom (underside) of the cylinders to force air thru the fins - I could imagine blockage in the fins close to the base that might not be indicated in CHTs, but in higher oil temps. Maybe hi pressure air could be used there to clean it out. Maybe water could clean everything up. <<< So do you consider my CHT's of 365 to 385 to be normal or ideal? >>> Normal. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) -------------------------------1132068389 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 11/15/2005 8:39:11 A.M. Central Standard Time,=20 MikeEasley@aol.com writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>

The jump in temps occurred in the middle of an oil change, the first=20= run=20 with regular oil, after the break-in oil was removed. I used the=20 Phillips Multigrade break-in oil. I am using Shell 15W-50 Multigrade= oil=20 now.

Mike,

Some years ago there was a problem with the plastic seal inside the cap= =20 making it into the oil being poured in the filler and blocking the flow=20 internally. Shouldn't happen theses days unless you used some really o= ld=20 15W/50 bottles of oil.

<<<

Oil pressure has remained constant at around 45 in cruise.

>>>

That seems too low. In my Lyc I try to keep it in the 70-80 psi=20 range. What is the range in your engine manual? is 45 at the low=20 end? Do you have an oil pressure adjustment? If the pressure is=20= too=20 low, certain areas may not be getting the oil they should be receiving.

<<<

So the birds nests must be a coincidence.

>>>

Hmmmmm...... Grayhawk is suspicious! Have you flown through= =20 heavy rain to clean out the engine compartment? How about nesting=20 materials blocking cylinder base fins? Baffling should be pretty tight= =20 around the bottom (underside) of the cylinders to force air thru the fins -=20= I=20 could imagine blockage in the fins close to the base that might not be indic= ated=20 in CHTs, but in higher oil temps. Maybe hi pressure air could be=20= used=20 there to clean it out. Maybe water could clean everything up.

<<<

So do you consider my CHT's of 365 to 385 to be normal or ideal?

>>>

Normal. =20

Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL=20 (KARR)

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