Re: Pinging six pack
[Re: charger RTSE]
#933380
02/21/11 01:13 AM
02/21/11 01:13 AM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Quote:
Car now pings when i step on it
where was the timing b 4. Will need more octane or stiffer springs. You used the vac gauge method for the initial then w that figure in hand shortened the slots to get 38 total w vac adv disconnected/plugged? EDIT if so might back off the total to 36 & if still pinging at WOT then octane/springs
Last edited by RapidRobert; 02/21/11 01:50 AM.
live every 24 hour block of time like it's your last day on earth
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Re: Pinging six pack
[Re: charger RTSE]
#933381
02/21/11 12:38 PM
02/21/11 12:38 PM
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Joined: Jun 2008
Posts: 3,916
usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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Quote:
Basically a stock motor.
Mopar performance dissy adjustable set at 18 deg.with brown and silver springs.Timing set at 20 deg before. I set it with a vacuume guage and it idles realy good.
Rear carbs are factory 1/8 turned out on the idle screws.
6.5 power valve.
Jets in cenre carb are 63.
Car now pings when i step on it should i up the jet size to 65 what are others running or do i have to do something with the rear carbs.
a stock engine does not need that kind of timing. 8-10 degrees intitial is plenty. some of the "ignition advice" on this website is pure crap.
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Re: Pinging six pack
[Re: charger RTSE]
#933383
02/21/11 02:30 PM
02/21/11 02:30 PM
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Joined: Jan 2003
Posts: 75,058
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,058
U.S.S.A.
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Quote:
Basically a stock motor.
Mopar performance dissy adjustable set at 18 deg.with brown and silver springs.Timing set at 20 deg before. I set it with a vacuume guage and it idles realy good.
Rear carbs are factory 1/8 turned out on the idle screws.
6.5 power valve.
Jets in cenre carb are 63.
Car now pings when i step on it should i up the jet size to 65 what are others running or do i have to do something with the rear carbs.
Do you have the vacuum advance connected ? If so disconnect and try it again .
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Re: Pinging six pack
[Re: 6PKRTSE]
#933385
02/21/11 04:51 PM
02/21/11 04:51 PM
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Joined: Feb 2003
Posts: 10,219
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,219
Someplace you aren't
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I'm going to guess he has over 40 degrees all in. Way too much.
If it pings only with the vac advance, try adjusting it.
I want my fair share
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Re: Pinging six pack
[Re: lewtot184]
#933386
02/21/11 06:15 PM
02/21/11 06:15 PM
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Joined: May 2007
Posts: 106
Australia
charger RTSE
OP
member
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OP
member
Joined: May 2007
Posts: 106
Australia
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Quote:
Quote:
Basically a stock motor.
Mopar performance dissy adjustable set at 18 deg.with brown and silver springs.Timing set at 20 deg before. I set it with a vacuume guage and it idles realy good.
Rear carbs are factory 1/8 turned out on the idle screws.
6.5 power valve.
Jets in cenre carb are 63.
Car now pings when i step on it should i up the jet size to 65 what are others running or do i have to do something with the rear carbs.
a stock engine does not need that kind of timing. 8-10 degrees initial is plenty. some of the "ignition advice" on this website is pure crap.
Interesting may be i should set it at 8-10 deg initial and disregard the other advice on the net.
It pings with vac advance disconnected and plugged.
My diisy is adjustable set at 18 deg and initial 20 equaling 38.
Should i try stepping up the center car jet from a 63 to a 65.
thanks Steve
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Re: Pinging six pack
[Re: charger RTSE]
#933387
02/21/11 06:27 PM
02/21/11 06:27 PM
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Joined: Jan 2007
Posts: 153
Wpg, Mb, Canada
six-barrel
member
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member
Joined: Jan 2007
Posts: 153
Wpg, Mb, Canada
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If it truly a stock motor thats likely too much initial timing.
Have you tried the max vacuum test to see what the engine requires. (up the advance until max vacuum is established then back it down 1". While doing this you will need to keep adjusting the idle rpm).
Whats the cam duration @50?
If it's truly stock then 10-14 initial would be more appropriate. Depending on which heads but 38 degrees may be too high and depending on which springs are in the distributor your curve may be too aggressive.
Last edited by six-barrel; 02/21/11 06:28 PM.
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Re: Pinging six pack
[Re: charger RTSE]
#933388
02/21/11 10:03 PM
02/21/11 10:03 PM
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Joined: Feb 2005
Posts: 4,316
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,316
Prospect, PA
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Quote:
Basically a stock motor.
Mopar performance dissy adjustable set at 18 deg.with brown and silver springs.Timing set at 20 deg before. I set it with a vacuume guage and it idles realy good.
Rear carbs are factory 1/8 turned out on the idle screws.
6.5 power valve.
Jets in cenre carb are 63.
Car now pings when i step on it should i up the jet size to 65 what are others running or do i have to do something with the rear carbs.
"Car now pings...." Did it not ping before the 6 pack?
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Re: Pinging six pack
[Re: BSB67]
#933389
02/21/11 10:49 PM
02/21/11 10:49 PM
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Joined: May 2007
Posts: 106
Australia
charger RTSE
OP
member
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OP
member
Joined: May 2007
Posts: 106
Australia
|
Quote:
Quote:
Basically a stock motor.
Mopar performance dissy adjustable set at 18 deg.with brown and silver springs.Timing set at 20 deg before. I set it with a vacuume guage and it idles realy good.
Rear carbs are factory 1/8 turned out on the idle screws.
6.5 power valve.
Jets in cenre carb are 63.
Car now pings when i step on it should i up the jet size to 65 what are others running or do i have to do something with the rear carbs.
"Car now pings...." Did it not ping before the 6 pack?
It use to run realy rich before and rough never idled smoothly.
Have you tried the max vacuum test to see what the engine requires. (up the advance until max vacuum is established then back it down 1". While doing this you will need to keep adjusting the idle rpm).
I adjusted the timing this way with a vac guage.
Car now idles smooth as and more responsive.
Will it make a differance is i up the jet size on the centre carb.? from 63 to 65 ?
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Re: Pinging six pack
[Re: charger RTSE]
#933390
02/22/11 09:42 AM
02/22/11 09:42 AM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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on the timing I'd set initial w the vac gauge method (max vac then back off 1 in hg while resetting your idle speed) then shorten the slots to get 36 total (vac adv disconnected/plugged) then play w springs staying just under the pinging point at WOT up thru the gears on your hottest/driest day) THEN plug in vac adv & work w it staying just under the pinging point at PART throttle (high vacuum) above the RPM where the springs (mech adv) are fulled advanced (3/32" allen wrench & CCW delays the start of the slope (needs higher vac to start it but the amt stays the same) and may need to further limit the arm travel (the amt) into the can by soldering strips of feeler gauge on either side of the notch or source a can w less vac (it's stamped on the arm (in dist degrees) & a can w ~7-9 might be a good start. You want the can for better mileage/cleaner plugs but it will take the most work of all the dist subsystems to get it spot on as it has 2 adjustments. Get the timing right THEN on to mixture (A/F meter-best, plug reading-so so). Want no pinging/overheating & better too rich (to a point) than too lean so yeah I'd exp w bumping the jets up
live every 24 hour block of time like it's your last day on earth
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