X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from omr-m03.mx.aol.com ([64.12.143.77] verified) by logan.com (CommuniGate Pro SMTP 6.0.6) with ESMTPS id 6439923 for flyrotary@lancaironline.net; Sat, 24 Aug 2013 06:23:11 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.143.77; envelope-from=Lehanover@aol.com Received: from mtaomg-da03.r1000.mx.aol.com (mtaomg-da03.r1000.mx.aol.com [172.29.51.139]) by omr-m03.mx.aol.com (Outbound Mail Relay) with ESMTP id E70E070000092 for ; Sat, 24 Aug 2013 06:22:36 -0400 (EDT) Received: from core-mod005b.r1000.mail.aol.com (core-mod005.r1000.mail.aol.com [172.29.196.17]) by mtaomg-da03.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id A87BCE000081 for ; Sat, 24 Aug 2013 06:22:36 -0400 (EDT) From: Lehanover@aol.com Full-name: Lehanover Message-ID: <361d0.44394595.3f49e36c@aol.com> Date: Sat, 24 Aug 2013 06:22:36 -0400 (EDT) Subject: Re: [FlyRotary] Re: Oil pressure To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_361d0.44394595.3f49e36c_boundary" X-Mailer: AOL 9.7 sub 1028 X-Originating-IP: [173.88.5.72] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20121107; t=1377339756; bh=6GPdU91BFvWe5OsSWBI5r9VUonsqkyq0pCMOHKRT4v8=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=CdzavZfG8vQ3QrodqJ2a7HqvxwEfq62L2oW+MxeNVy4ksgm/T5VkT3toAa3IZZsWn lHIKfDhVxcDsBQqcPnitrgHNrLvFXAGfVlp06ck6wU9AeYTT99EJQ1nTk/Im0f6ahm TqDIC1i2qgRO11mRCNYTLBtc4sUqEvttgZVArF8Q= x-aol-sid: 3039ac1d338b5218896c7192 --part1_361d0.44394595.3f49e36c_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit There is an oil supply gallery from the mating surface of the front cover forward (in the car) to a cross gallery, then to a short gallery to the OMP mounting surface. It just supplies oil to the pump. I tap that gallery for a 10-32 socket head screw used to block the gallery right where it starts. If the pump is left in place, remove the E clips and slide off the drive gear and key. Put them in a bag in case you want to use the OMP at a later date. 86 to 93 cranks have a thermal pellet in the nose that controls oil flow to the rotors for fast warm up. I just read that in my Racing Beat catalogue. I have never seen one so I do not know if it dumps excess oil, or prevents its flow to the rotors. So the effect on oil pressure is not known to me. I have read that there is a plug that can be installed to replace this system. Mistral solved one of their oil pressure / temperature, problems by removing the bug screen from the oil pick up tube. They were also using multi-grade air plane oil. It foams up badly and looses oil pressure, and cools poorly as it slows heat absorption and heat release in the cooler. They went back to a straight weight car oil and cured most of the problems. I would try a nice straight 50 or 60 weight Valvoline racing oil. If it is not the cure, at the least it won't hurt anything. It might hold enough pressure to get you home. Racing oils have more Zinc anti-scuff and more anti foaming agents. Synthetics are like cat pee when hot. Not very thick. Lap the pick up flange dead flat and install with no sealant. Torque only to spec not more. I welded a large thick washer to the tube end and radiused the wash/tube to look like a trumpet bell. The end of any tube in suction is a flow disaster. I use Weber 180 jets in the crank. The 200 size leaves you with about 10 pounds of pressure at idle. I idle at 2,000 to 2,200 RPM and only get 60 to 70 pounds with a huge Moroso oil pump. It hops up to the regulator controlled 100 PSI for racing just off idle. Don't make me drive to Houston. Lynn E. Hanover In a message dated 8/24/2013 3:58:31 A.M. Eastern Daylight Time, cbarber@texasattorney.net writes: I am not sure if the orifice is closed off. I have removed the oil metering pump as I pre-mix. I have a plate over the mounting place of the oil pump....is that what you refer to? It does not sound as if this is what you mean. The metering pump drive gear IS still in place. Can you provide more information on the orifice. A picture would be great but I know that's a long shot. --part1_361d0.44394595.3f49e36c_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
There is an oil supply gallery from the mating = surface=20 of the front cover forward (in the car)
to a cross gallery, then to a short gallery to = the OMP=20 mounting surface. It just supplies oil to the pump. I tap that gallery= for=20 a 10-32 socket head screw used to block the gallery right where it=20 starts. 
 
If the pump is left in place, remove the E clip= s and=20 slide off the drive gear and key. Put them in a bag in case you want to use= the=20 OMP at a later date.
 
86 to 93 cranks have a thermal pellet in the no= se that=20 controls oil flow to the rotors for fast warm up. I just read that in my Ra= cing=20 Beat catalogue. I have never seen one so I do not know if it dumps excess o= il,=20 or prevents its flow to the rotors. So the effect on oil pressure is not kn= own=20 to me. I have read that there is a plug that can be installed to replace th= is=20 system.
 
Mistral solved one of their oil pressure /=20 temperature, problems by removing the bug screen from the oil pick up = tube.=20 They were also using multi-grade air plane oil. It foams up badly and loose= s oil=20 pressure, and cools poorly as it slows heat absorption and heat release in = the=20 cooler. They went back to a straight weight car oil and cured most of the= =20 problems. 
 
I would try a nice straight 50 or 60 weight Val= voline=20 racing oil. If it is not the cure, at the least it won't hurt anything. It = might=20 hold enough pressure to get you home. Racing oils have more Zinc anti-scuff= and=20 more anti foaming agents.
 
Synthetics are like cat pee when hot. Not very= =20 thick.
 Lap the pick up flange dead flat and inst= all=20 with no sealant. Torque only to spec not more. I welded a large thick= =20 washer to the tube end and radiused the wash/tube to look like a trumpet be= ll.=20 The end of any tube in suction is a flow disaster. 
 
I use Weber 180 jets in the crank. The 200 size= leaves=20 you with about 10 pounds of pressure at idle. I idle at 2,000 to 2,200 RPM = and=20 only get 60 to 70 pounds with a huge Moroso oil pump.
It hops up to the regulator controlled 100 PSI = for=20 racing just off idle. 
 
Don't make me drive to Houston.=
 
Lynn E. Hanover
 
    
 
In a message dated 8/24/2013 3:58:31 A.M. Eastern Daylight Time,=20 cbarber@texasattorney.net writes:
=

I am not sure if the orifice is closed off.  I have removed the o= il=20 metering pump as I pre-mix.  I have a plate over the mounting place = of=20 the oil pump....is that what you refer to?  It does not sound as if = this=20 is what you mean.  The metering pump drive gear IS still in place.

 

Can you provide more information on the orifice.  A picture would= be=20 great but I know that's a long=20 shot.

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