Topica Loopframe_Guzzi Archive


Subject: Re: harpers electronic ignition

Author: PEHA-@aol.com

Date: May 5, 2003, 5:01 PM

Post ID: 1712876762




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In a message dated 5/5/2003 3:57:27 PM Pacific Daylight Time, mut-@msn.com
writes:


 I'am hoping to
get better timing on the second cylinder which is very dependant on a
precise points gap.

Huh? 'splain that one Lucy. And why wouldn't the first cylinder have a
similar need for precision on gap and timing?

Loopframes have one set of points and a distributor cam with two lobes. If
you get one side's timing set spot on and the other is not, there are only
two possible causes. First, the marks on your flywheel may be improper and
its just an artifact. Easily tested by putting a degree wheel on the front
of the crank and using a TDC tool to verify. If necessary, make your own new
marks for both cylinders. Second, the original machinist may have improperly
cut the two lobes on your distributor shaft and you actually do have two
different ignition hits for the two cylinders. Not impossible to imagine.
Nothing you can do about that one except chang the distributor.

Patrick

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<HTML><FONT FACE=arial,helvetica><FONT SIZE=2>In a message dated 5/5/2003 3:57:27 PM Pacific Daylight Time, mut-@msn.com writes:<BR>
<BR>
<BR>
<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">I'am hoping to<BR>
get better timing on the second cylinder which is very dependant on a<BR>
precise points gap.<BR>
</BLOCKQUOTE><BR>
<BR>
Huh? 'splain that one Lucy. And why wouldn't the first cylinder have a similar need for precision on gap and timing?<BR>
<BR>
Loopframes have one set of points and a distributor cam with two lobes. If you get one side's timing set spot on and the other is not, there are only two possible causes. First, the marks on your flywheel may be improper and its just an artifact. Easily tested by putting a degree wheel on the front of the crank and using a TDC tool to verify. If necessary, make your own new marks for both cylinders. Second, the original machinist may have improperly cut the two lobes on your distributor shaft and you actually do have two different ignition hits for the two cylinders. Not impossible to imagine. Nothing you can do about that one except chang the distributor. <BR>
<BR>
Patrick</FONT></HTML>

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