Return-Path: <13brv3@bellsouth.net> Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3054309 for flyrotary@lancaironline.net; Tue, 02 Mar 2004 09:04:30 -0500 Received: from rad ([65.0.129.176]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.06.05 201-253-122-130-105-20030824) with ESMTP id <20040302140430.TBYK1865.imf17aec.mail.bellsouth.net@rad> for ; Tue, 2 Mar 2004 09:04:30 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] overflow connections Date: Tue, 2 Mar 2004 08:04:32 -0600 Message-ID: <005f01c4005f$49518970$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0060_01C4002C.FEB71970" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0060_01C4002C.FEB71970 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I understand that the bottom of the tank should have a hose running to the top of the water = pump, and I have installed a fitting just underneath the thermostat for this. Where would be the best place run/connect the hose that connects to the side of the expansion tank? =20 Hi Paul, =20 You want one fitting on the engine at the highest point you can, which = also has pressure from flow. That connection goes to the fitting that's on = the side of the tank. The other connection will be on the suction side of = the radiator, such as that port that you had on your water pump housings = lower hose. That hose goes to the bottom of the exp tank. =20 =20 You set up a flow between these two points. Water flows from the high pressure point (at your thermostat housing) in through the side of the = exp tank, out the bottom of the tank, then back to the lower radiator hose. = The idea is that the high point may have pockets of air which get forced out (the whole idea). When this hose goes into the side of the tank, the = air goes up, and the coolant stays in the bottom. What returns from the = tank to the engine is all coolant since it comes from the bottom of the tank. = You don't really want big hoses, since it's just moving some air bubbles, = and the flow is bypassing the radiator. =20 =20 Did that help? =20 Rusty (need more coffee, then off to Muscle Shoals) ------=_NextPart_000_0060_01C4002C.FEB71970 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

I understand that the
bottom of the tank should = have a hose=20 running to the top of the water pump, and I have installed a fitting = just=20 underneath the thermostat for this. Where would be the best place=20 run/connect  the hose that connects to the side of the expansion=20 tank?

 
Hi=20 Paul,
 
You want = one fitting on=20 the engine at the highest point you can, which also has pressure from=20 flow.  That connection goes to the fitting that's on the side of = the=20 tank.  The other connection will be on the suction side of the = radiator,=20 such as that port that you had on your water pump housings lower = hose. =20 That hose goes to the bottom of the exp tank. 
 
You set = up a flow=20 between these two points.  Water flows from the high pressure point = (at=20 your thermostat housing) in through the side of the exp tank, out the = bottom of=20 the tank, then back to the lower radiator hose.  The idea is that = the high=20 point may have pockets of air which get forced out (the whole = idea).  When=20 this hose goes into the side of the tank, the air goes up, and the = coolant stays=20 in the bottom.  What returns from the tank to the engine is all = coolant=20 since it comes from the bottom of the tank.  You don't really want = big=20 hoses, since it's just moving some air bubbles, and the flow is = bypassing the=20 radiator.  
 
Did that = help?
 
Rusty = (need more coffee,=20 then off to Muscle Shoals)


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