X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-d23.mx.aol.com ([205.188.139.137] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2187979 for flyrotary@lancaironline.net; Thu, 19 Jul 2007 18:08:43 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.139.137; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-d23.mx.aol.com (mail_out_v38_r9.2.) id q.ce0.1560700e (57365) for ; Thu, 19 Jul 2007 18:08:00 -0400 (EDT) From: Lehanover@aol.com Message-ID: Date: Thu, 19 Jul 2007 18:08:00 EDT Subject: Re: [FlyRotary] Re: Carbs To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1184882880" X-Mailer: 9.0 Security Edition for Windows sub 5366 X-Spam-Flag: NO -------------------------------1184882880 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 7/19/2007 3:45:57 P.M. Eastern Daylight Time, wrjjrs@aol.com writes: You should seriously consider a clear float bowl. On engines capable of pulling high vacuum WOT often will drain the float bowl if you don't run a fuel pump. The resultant lean condition isn't good for your engine! Bill Jepson This a very accurate piece of data. Years ago I was having dreadful tuning problems with my first Weber. We were at Sebring Florida. A fellow came over with a little gadget he said would explain the problem. It was a small banjo fitting with a vertical clear tube attached. It installs into the side of the Weber float bowl where the brass plug used for draining the bowl is located. We removed the plug and drained the bowl. He installed his gizmo and we fired the engine. The clear tube filled up to replicate the fuel level in the bowl. He revved the engine to 5,000 RPM. The clear tube was empty. At 4,000 RPM it filled nearly full again, and a slow increase to 5,000 RPM emptied it again. A nearly complete carb education in 45 seconds. So, the jets that come in the new carb, designed for a peak RPM of 4,000, will not work well above 4,000. Duh.......................Too lean? Yes I guess I guess so. Here is an article in VW Trends Magazine about modifying the Weber 48IDF for higher performance use. Use the forward and back arrows on the page to navigate. Lynn E. Hanover ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour -------------------------------1184882880 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 7/19/2007 3:45:57 P.M. Eastern Daylight Time,=20 wrjjrs@aol.com writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>You=20 should seriously consider a clear float bowl. On engines capable of=20
pulling high vacuum WOT often will drain the float bowl if you don't=20
run a fuel pump. The resultant lean condition isn't good for your=20
engine!
Bill Jepson

This a very accurate piece of data. Years ago I was having dreadful tun= ing=20 problems with my first Weber.

We were at Sebring Florida.

A fellow came over with a little gadget he said would explain the probl= em.=20 It was a small banjo fitting with a vertical clear tube attached. It install= s=20 into the side of the Weber float bowl where the brass plug used for draining= the=20 bowl is located. We removed the plug and drained the bowl. He installed his=20 gizmo and we fired the engine. The clear tube filled up to replicate the fue= l=20 level in the bowl. He revved the engine to 5,000 RPM.

The clear tube was empty. At 4,000 RPM it filled nearly full again, and= a=20 slow increase to 5,000 RPM emptied it again. A nearly complete carb educatio= n in=20 45 seconds. So, the jets that come in the new carb, designed for a peak RPM=20= of=20 4,000, will not work well above 4,000. Duh.......................Too lean? Y= es I=20 guess

I guess so.

Here is an article in VW Trends Magazine about modifying the Weber 48ID= F=20 for higher performance use.

Use the forward and back arrows on the page to navigate.

Lynn E. Hanover

Get a sneak pe= ek of the all-new AOL.com.

<= /BODY> -------------------------------1184882880--