X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ispmxmta05-srv.alltel.net ([166.102.165.166] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 888245 for flyrotary@lancaironline.net; Mon, 19 Dec 2005 11:39:22 -0500 Received-SPF: pass receiver=logan.com; client-ip=166.102.165.166; envelope-from=montyr2157@alltel.net Received: from Thorstwin ([4.89.244.215]) by ispmxmta05-srv.alltel.net with SMTP id <20051219163835.SVZN8731.ispmxmta05-srv.alltel.net@Thorstwin> for ; Mon, 19 Dec 2005 10:38:35 -0600 Message-ID: <002001c604ba$b0a1cde0$d7f45904@Thorstwin> From: "Monty Roberts" To: Subject: Heat exchangers Date: Mon, 19 Dec 2005 10:38:48 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01C60488.65655180" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_001D_01C60488.65655180 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Monty; I'm using the Ford cores and I did just what you are thinking. I = drilled through the baffles with a 7/8" bit. Common wisdom seems to say = that the GM cores flow better than the Fords, but I believe that is = because someone cut one open at sometime and said "that can't flow = enough", and concluded that further testing was not needed. (sorta like = someone's official test of the EWP). I did some actual flow tests of the = 2 different types using an EWP and a mag tube flowmeter and found = slightly better flow with the Ford cores. (the full report can be found = in the archives). I believe I blew out the metal shavings using compressed air and it = took a little effort. Todd Todd, One test is more valuable than an infite number of theories. :-)=20 Did you drill out the side holes on the baffle or just down the center? = I'll look up your post in the archive. I am also thinking that with = these things in the wings with the tank on top and bottom it might be a = bit challenging to get all the air out of the top tank. Most of you guys = are running them with the tanks on the side so the air can migrate to = the top. Thanks, Monty ------=_NextPart_000_001D_01C60488.65655180 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi=20 Monty;

I'm using the Ford cores and I did just what = you are=20 thinking. I drilled through the baffles with a 7/8" bit. Common wisdom = seems to=20 say that the GM cores flow better than the Fords, but I believe that is = because=20 someone cut one open at sometime and said "that can't flow enough",=20 and concluded that further testing was not needed. (sorta like = someone's official test of the EWP). I did some actual flow tests of the = 2=20 different types using an EWP and a mag tube flowmeter and found slightly = better=20 flow with the Ford cores. (the full report can be found in the=20 archives).

I believe I blew out the metal shavings using = compressed=20 air and it took a little effort.

Todd

Todd,

One test is more valuable = than an=20 infite number of theories. :-)

Did you drill out the side holes = on the=20 baffle or just down the center? I'll look up your post in the archive. I = am also=20 thinking that with these things in the wings with the tank on top and = bottom it=20 might be a bit challenging to get all the air out of the top tank. Most = of you=20 guys are running them with the tanks on the side so the air can migrate = to the=20 top.

Thanks,

Monty

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