X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m21.mx.aol.com ([64.12.137.2] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2106654 for flyrotary@lancaironline.net; Sat, 16 Jun 2007 13:52:57 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.2; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-m21.mx.aol.com (mail_out_v38_r9.2.) id q.bd6.143bb50e (14501) for ; Sat, 16 Jun 2007 13:51:14 -0400 (EDT) From: Lehanover@aol.com Message-ID: Date: Sat, 16 Jun 2007 13:51:13 EDT Subject: Re: [FlyRotary] Re: RV-7A cooling To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1182016273" X-Mailer: 9.0 Security Edition for Windows sub 5366 X-Spam-Flag: NO -------------------------------1182016273 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 6/16/2007 12:17:23 P.M. Eastern Daylight Time, clouduster@austin.rr.com writes: Lynn, Thanks for all the oil pump, inlet tube etc. information. My engine is a stock RX-8 engine pulled out of a wreck with about 9500 miles. The pan and oil pick-up are stock with a 1/2 inch spacer on the oil pick-up. The crankshaft oil bypass has been disabled and the oil pick-up is the stock plastic item. From the information you sent it appears I could really improve my oil pick-up system! On start-up my oil goes to 85 psi. After warm-up it is slightly slower. On take-off it goes to 85 but as the oil temp exceeds 200 the oil pressure comes down some. I will open the filter and check it when I change to Redline straight 40 W racing oil. I compared the oil dip stick from a 1997 13 B and the Renesis. It looks like the oil level in the Renesis is about 1 1/2 inch lower in the Renesis. I have never seen the Renesis apart, and have no data about their pickups. I would hope that they fixed everything, but I am often disappointed. The 85 pounds you see at first, is being controlled by the relief valve. So, normal oil pressure is 85 pounds. It may be less than that at idle, where pump output is at it's lowest. Lower pressure at RPM, indicates much thinning from over heated oil, and oil foaming. So the pump looks to be in good shape. If, before the oil gets to full temperature, you can still get 85 PSI, then the pickup must be close to adequate. Racing Beat says 210 degrees is the very highest oil temp allowed. I have been to 200 degrees on a real hot day but never more than that. Oil in the wedge is much hotter than the sump oil temps. So even 200 makes me buy more coolers. Racing Beat says oil foaming can take off as much as 10 PSI. So there is another cause at work as well. Getting the water temp down to 180 tops will help a bunch. Lynn E. Hanover ************************************** See what's free at http://www.aol.com. -------------------------------1182016273 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 6/16/2007 12:17:23 P.M. Eastern Daylight Time,=20 clouduster@austin.rr.com writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000=20 size=3D2>Lynn,
Thanks for all the oil pump, inlet tube etc.=20 information. My engine is
a stock RX-8 engine pulled out of a wr= eck=20 with about 9500 miles. The
pan and oil pick-up are stock with a=20= 1/2=20 inch spacer on the oil
pick-up. The crankshaft oil bypass has be= en=20 disabled and the oil
pick-up is the stock plastic item. From the= =20 information you sent it
appears I could really improve my oil pick-up=20 system! On start-up my
oil goes to 85 psi. After warm-up i= t is=20 slightly slower. On take-off
it goes to 85 but as the oil temp=20 exceeds 200 the oil pressure comes
down some. I will open the fi= lter=20 and check it when I change to Redline
straight 40 W racing oil. =20= I=20 compared the oil dip stick from a 1997 13 B
and the Renesis. It=20 looks like the oil level in the Renesis is about 1
1/2 inch lower in t= he=20 Renesis.

I have never seen the Renesis apart, and have no data about their picku= ps.=20 I would hope that they fixed everything, but I am often disappointed.

The 85 pounds you see at first, is being controlled by the relief valve= .=20 So, normal oil pressure is 85 pounds. It may be less than that at idle, wher= e=20 pump output is at it's lowest.

Lower pressure at RPM, indicates much thinning from over heated oil, an= d=20 oil foaming. So the pump looks to be in good shape. If, before the oil gets=20= to=20 full temperature, you can still get 85 PSI, then the pickup must be close to= =20 adequate.

Racing Beat says 210 degrees is the very highest oil temp allowed. I ha= ve=20 been to 200 degrees on a real hot day but never more than that. Oil in the w= edge=20 is much hotter than the sump oil temps. So even 200 makes me buy more cooler= s.=20

Racing Beat says oil foaming can take off as much as 10 PSI. So th= ere=20 is another cause at work as well.

Getting the water temp down to 180 tops will help a bunch.

Lynn E. Hanover

See w= hat's free at AOL.= com.

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