Subject: Re: Harpers Electronic Ignition for Loopframes
Author: Allan Johnson
Date: May 5, 2003, 4:13 PM
Post ID: 1712876289
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There are new advance springs in the distributer and the kit from Harper's does use them. I am not sure what is causing the pinging but when I want the goose to move I mean right now. The timing is dead on the marks according to my timing light. The only difficult thing for me is getting the point gap exactly right thus getting the timing for the second cylinder exactly right. The hope is it will have to be done just one more time with the electronic ignition. I don't know for sure how many miles are on the bike there were only a couple of thousand on the speedo when I bought it. The engine had been upped to 1000cc and I have the reciepts for many parts and machine work the PO had done. Probably not a super job like you guys out west get but enough for me. Rat bikes forever!
----- Original Message -----
From: Patrick Hayes
To: Loopfram-@topica.com
Sent: Monday, May 05, 2003 2:12 PM
Subject: Re: Harpers Electronic Ignition for Loopframes
In a message dated 5/4/2003 3:41:52 PM Pacific Daylight Time, mut-@msn.com writes:
when the bike gets good and hot in
traffic in Georgia it detonates when the throttle is applied quickly
First, how old are your valve guides. Many Guzzis have problems with guide wear after about 30K miles. Just a little oil leakage past the intake guide on the suction stroke and you really deteriorate the relative octane rating of the air/fuel mixture. Might be thinking about a valve job. Not enough for smoke or for significant oil usage, but enough to alter the mixture properties.
Second, how old are the advance springs in your distributor? And, does Harpers use their own advancing mechanism or rely on your original? As the springs age, they get weak and allow the advance to happen to soon at too low an rpm. Thus pinging.
Third, I sure hope you're using premium grade fuel.
Patrick
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<DIV>There are new advance springs in the distributer and the kit from Harper's
does use them. I am not sure what is causing the pinging but when I want the
goose to move I mean right now. The timing is dead on the marks according to my
timing light. The only difficult thing for me is getting the point gap exactly
right thus getting the timing for the second cylinder exactly right. The hope is
it will have to be done just one more time with the electronic ignition. I don't
know for sure how many miles are on the bike there were only a couple of
thousand on the speedo when I bought it. The engine had been upped to 1000cc and
I have the reciepts for many parts and machine work the PO had done. Probably
not a super job like you guys out west get but enough for me. Rat bikes
forever!</DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="FONT: 10pt arial"><B>From:</B> <A title=p-@aol.com
href="mailto:peha-@aol.com">Patrick Hayes</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=Loopf-@topica.com
href="mailto:Loopfram-@topica.com">Loopfram-@topica.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 05, 2003 2:12 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Harpers Electronic Ignition
for Loopframes</DIV>
<DIV><BR></DIV>
<DIV><FONT face=arial,helvetica><FONT size=2>In a message dated 5/4/2003
3:41:52 PM Pacific Daylight Time, <A
href="mailto:mut-@msn.com">mut-@msn.com</A> writes:<BR><BR><BR>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px"
TYPE="CITE">when the bike gets good and hot in<BR>traffic in Georgia it
detonates when the throttle is applied quickly</BLOCKQUOTE><BR><BR>First, how
old are your valve guides. Many Guzzis have problems with guide wear
after about 30K miles. Just a little oil leakage past the intake guide
on the suction stroke and you really deteriorate the relative octane rating of
the air/fuel mixture. Might be thinking about a valve job. Not
enough for smoke or for significant oil usage, but enough to alter the mixture
properties.<BR><BR>Second, how old are the advance springs in your
distributor? And, does Harpers use their own advancing mechanism or rely
on your original? As the springs age, they get weak and allow the
advance to happen to soon at too low an rpm. Thus pinging.<BR><BR>Third,
I sure hope you're using premium grade fuel.<BR><BR>Patrick</FONT></FONT></DIV></BLOCKQUOTE></BODY></HTML>
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