X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 17 Feb 2006 00:38:57 -0500 Message-ID: X-Original-Return-Path: Received: from imo-m18.mx.aol.com ([64.12.138.208] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 988553 for lml@lancaironline.net; Fri, 17 Feb 2006 00:24:05 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.208; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m18.mx.aol.com (mail_out_v38_r7.3.) id q.1c9.3a7a0c04 (62976) for ; Fri, 17 Feb 2006 00:23:17 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <1c9.3a7a0c04.3126b7c4@aol.com> X-Original-Date: Fri, 17 Feb 2006 00:23:16 EST Subject: Oil blackened spark plug tips. X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1140153796" X-Mailer: 9.0 Security Edition for Windows sub 5300 X-Spam-Flag: NO -------------------------------1140153796 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Some may remember the pix of my Iridium spark plugs that showed both cyl # 3 plug blackened by burnt oil (not fouled) while the other 6 plugs were a nice grayish tan color. Well, the cylinder was pulled and the following noted: 1. The piston ring gaps were just inside the limit, but the piston sides above the bottom ring contained an awful lot of burnt oil. 2. 2 metal flakes were pounded into the piston skirt and the resulting bumps burnished nicely. 3. The ECI "plasma" ring face exfoliated 2 rectangular particles (1.5mm x 3mm x a smidge deep) that matched item 2 above. 4. The exhaust valve had some wobble to it and the guide was just out of specs. ECI was kind enough to warranty replace the piston and rings after commenting something like "I thought we had seen the end of that problem...", and that after only 270 engine hours. Everything is back together, just waiting for the weather to lift so I can test run the thing with the LSE crank sensor. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) -------------------------------1140153796 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Some may remember the pix of my Iridium spark plugs that showed both cy= l #=20 3 plug blackened by burnt oil (not fouled) while the other 6 plugs were a ni= ce=20 grayish tan color. Well, the cylinder was pulled and the following=20 noted:

1. The piston ring gaps were just inside the limit, but the piston side= s=20 above the bottom ring contained an awful lot of burnt oil.

2. 2 metal flakes were pounded into the piston skirt and the resul= ting=20 bumps burnished nicely.

3. The ECI "plasma" ring face exfoliated 2 rectangular particles (1.5mm= x=20 3mm x a smidge deep) that matched item 2 above.

4. The exhaust valve had some wobble to it and the guide was just out o= f=20 specs.

ECI was kind enough to warranty replace the piston and rings after= =20 commenting something like "I thought we had seen the end of that problem..."= ,=20 and that after only 270 engine hours.

Everything is back together, just waiting for the weather to lift so I=20= can=20 test run the thing with the LSE crank sensor.=20

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

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