I thought all cars ping at high load and low revs ie when you are slugging along in 5th up a hill when you should be in third say. Obviously your problem is worse than this though
It still just sounds a bit wierd. Have you got the vacuum advance hooked deep into the inlet manifold instead of just at the throttle plate? Nick > > From: "Rowe, Adam" <[EMAIL PROTECTED]> > Subject: RE: blue bird dizzy, re-mapping > Date: 22/02/2002 15:29:16 > To: [EMAIL PROTECTED] > > You are right. It sounds like the advance curve of the Dizzy no longer > matches what is best for your motor. Stiffer springs would mean the advance > comes in over a longer rev range, and this in conjunction with lower static > timing should give you a better advance. > > > -----Original Message----- > > From: Justin Friedrichs [SMTP:[EMAIL PROTECTED]] > > Sent: 22/02/2002 13:57 > > To: '[EMAIL PROTECTED]' > > Subject: RE: blue bird dizzy, re-mapping > > > > Nick, > > Only high load at low RPM, more noticable when its hot. > > I've retarded the timing and there's no sign of it. So It shouldn't be > > lean. > > I always run PULP. > > I doubt it pings at high rpm, because the car doesn't ping at speeds over > > about 60kph, if I have had it ping for a second and I've held it at the > > higher revs it stops, its quite audible, and my motors not that loud. > > I just know that its the dizzy, as they have an aggresive advance curve > > standard, and the motor is worked, so it makes sense. > > > > Regards > > Justin > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]] > > > Sent: Friday, February 22, 2002 12:52 PM > > > To: [EMAIL PROTECTED] > > > Subject: Re: blue bird dizzy, re-mapping > > > > > > Justin, > > > > > > Does it ping under no-load, part-load or full-load conditions at low > > RPM? > > > How do you know that it isn't pinging at High RPM? > > > > > > Perhaps you are leaning out at low RPM? > > > > > > Anyway, just some thoughts, > > > Good luck > > > Nick > > > > > > > > From: Justin Friedrichs <[EMAIL PROTECTED]> > > > > Subject: RE: blue bird dizzy, re-mapping > > > > Date: 22/02/2002 12:34:55 > > > > To: "'[EMAIL PROTECTED]'" > > <[EMAIL PROTECTED]> > > > > > > > > Thanx everyone for their replies, I would have thought stiffer springs > > > would > > > > be needed, to reduce an aggressive advance curve. My motor has head > > and > > > > piston work done to it, so it pings down low but not in the high rev > > > ranges. > > > > > > > > > -----Original Message----- > > > > > From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]] > > > > > Sent: Friday, February 22, 2002 12:24 PM > > > > > To: [EMAIL PROTECTED] > > > > > Subject: Re: blue bird dizzy, re-mapping > > > > > > > > > > You need to increase the static advance > > > > > This is done by turning the dissy assembly ( using timing light). > > > > > > > > > > You need to limit the total advance. > > > > > This is done by putting in extra stops for the bob-weights or > > bending > > > the > > > > > stops that are already there. > > > > > > > > > > You also need to get the dissy to advance faster to the new, lower, > > > limit. > > > > > This is done with softer springs. > > > > > > > > > > Sounds easy, but there is a lot of trial and error > > > > > > > > > > Nick > > > > > > > > > > > > From: "mark krawczuk" <[EMAIL PROTECTED]> > > > > > > Subject: Re: blue bird dizzy, re-mapping > > > > > > Date: 22/02/2002 11:59:14 > > > > > > To: <[EMAIL PROTECTED]> > > > > > > > > > > > > hi, i`m not really sure but what isint here some slots in the > > > weights , > > > > > ? > > > > > > what about if u reduce the length of the slots? > > > > > > make the springs tighter/smaller? > > > > > > > > > > > > > > > > > > any one else? > > > > > > > > > > > > mark k > > > > > > > > > > > > ----- Original Message ----- > > > > > > From: "Justin Friedrichs" <[EMAIL PROTECTED]> > > > > > > To: <[EMAIL PROTECTED]> > > > > > > Sent: Friday, February 22, 2002 10:33 AM > > > > > > Subject: RE: blue bird dizzy, re-mapping > > > > > > > > > > > > > > > > > > > So no-one knows how to re-graph the dizzy?? > > > > > > > > > > > > > > > -----Original Message----- > > > > > > > > From: Justin Friedrichs [SMTP:[EMAIL PROTECTED]] > > > > > > > > Sent: Thursday, February 21, 2002 8:13 AM > > > > > > > > To: '[EMAIL PROTECTED]' > > > > > > > > Subject: blue bird dizzy, re-mapping > > > > > > > > > > > > > > > > > > > > > > > > Morning Listers, > > > > > > > > I am having trouble with my electronic ignition timing. The > > > timing > > > > > is > > > > > > > > running too retarded now, to stop pinging and I run PULP. I am > > > > > obviously > > > > > > > > losing power and response, so I'll have to adjust the dizzy. I > > > know > > > > > its > > > > > > > > just > > > > > > > > a matter of adjusting the springs in the dizzy, but does > > anyone > > > have > > > > > any > > > > > > > > details of how to reduce the advance curve, because it seems > > to > > > > > > aggressive > > > > > > > > at the moment. > > > > > > > > > > > > > > > > Regards > > > > > > > > Justin > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > This message was sent through MyMail http://www.mymail.com.au > > > > > > > > > > > > > > > > > > > > > > > > This message was sent through MyMail http://www.mymail.com.au > > > > > > > > > > This message was sent through MyMail http://www.mymail.com.au --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------Title: RE: blue bird dizzy, re-mapping
You are right. It sounds like the advance curve of the Dizzy no longer matches what is best for your motor. Stiffer springs would mean the advance comes in over a longer rev range, and this in conjunction with lower static timing should give you a better advance.
-----Original Message-----
From: Justin Friedrichs [SMTP:[EMAIL PROTECTED]]
Sent: 22/02/2002 13:57
To: '[EMAIL PROTECTED]'
Subject: RE: blue bird dizzy, re-mapping
Nick,
Only high load at low RPM, more noticable when its hot.
I've retarded the timing and there's no sign of it. So It shouldn't be lean.
I always run PULP.
I doubt it pings at high rpm, because the car doesn't ping at speeds over
about 60kph, if I have had it ping for a second and I've held it at the
higher revs it stops, its quite audible, and my motors not that loud.
I just know that its the dizzy, as they have an aggresive advance curve
standard, and the motor is worked, so it makes sense.
Regards
Justin
> -----Original Message-----
> From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]]
> Sent: Friday, February 22, 2002 12:52 PM
> To: [EMAIL PROTECTED]
> Subject: Re: blue bird dizzy, re-mapping
>
> Justin,
>
> Does it ping under no-load, part-load or full-load conditions at low RPM?
> How do you know that it isn't pinging at High RPM?
>
> Perhaps you are leaning out at low RPM?
>
> Anyway, just some thoughts,
> Good luck
> Nick
> >
> > From: Justin Friedrichs <[EMAIL PROTECTED]>
> > Subject: RE: blue bird dizzy, re-mapping
> > Date: 22/02/2002 12:34:55
> > To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
> >
> > Thanx everyone for their replies, I would have thought stiffer springs
> would
> > be needed, to reduce an aggressive advance curve. My motor has head and
> > piston work done to it, so it pings down low but not in the high rev
> ranges.
> >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]]
> > > Sent: Friday, February 22, 2002 12:24 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: blue bird dizzy, re-mapping
> > >
> > > You need to increase the static advance
> > > This is done by turning the dissy assembly ( using timing light).
> > >
> > > You need to limit the total advance.
> > > This is done by putting in extra stops for the bob-weights or bending
> the
> > > stops that are already there.
> > >
> > > You also need to get the dissy to advance faster to the new, lower,
> limit.
> > > This is done with softer springs.
> > >
> > > Sounds easy, but there is a lot of trial and error
> > >
> > > Nick
> > > >
> > > > From: "mark krawczuk" <[EMAIL PROTECTED]>
> > > > Subject: Re: blue bird dizzy, re-mapping
> > > > Date: 22/02/2002 11:59:14
> > > > To: <[EMAIL PROTECTED]>
> > > >
> > > > hi, i`m not really sure but what isint here some slots in the
> weights ,
> > > ?
> > > > what about if u reduce the length of the slots?
> > > > make the springs tighter/smaller?
> > > >
> > > >
> > > > any one else?
> > > >
> > > > mark k
> > > >
> > > > ----- Original Message -----
> > > > From: "Justin Friedrichs" <[EMAIL PROTECTED]>
> > > > To: <[EMAIL PROTECTED]>
> > > > Sent: Friday, February 22, 2002 10:33 AM
> > > > Subject: RE: blue bird dizzy, re-mapping
> > > >
> > > >
> > > > > So no-one knows how to re-graph the dizzy??
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Justin Friedrichs [SMTP:[EMAIL PROTECTED]]
> > > > > > Sent: Thursday, February 21, 2002 8:13 AM
> > > > > > To: '[EMAIL PROTECTED]'
> > > > > > Subject: blue bird dizzy, re-mapping
> > > > > >
> > > > > >
> > > > > > Morning Listers,
> > > > > > I am having trouble with my electronic ignition timing. The
> timing
> > > is
> > > > > > running too retarded now, to stop pinging and I run PULP. I am
> > > obviously
> > > > > > losing power and response, so I'll have to adjust the dizzy. I
> know
> > > its
> > > > > > just
> > > > > > a matter of adjusting the springs in the dizzy, but does anyone
> have
> > > any
> > > > > > details of how to reduce the advance curve, because it seems to
> > > > aggressive
> > > > > > at the moment.
> > > > > >
> > > > > > Regards
> > > > > > Justin
> > > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > > This message was sent through MyMail http://www.mymail.com.au
> > >
> > >
> >
> >
>
> This message was sent through MyMail http://www.mymail.com.au
>
>
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