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  #1  
Old 06-30-2006, 10:23 PM
430MEL 430MEL is offline
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Default Pinging

My 430 in my 60 pings harshly when I apply the gas steadly, if I punch it it does not. What type gas are you guys running. The gentleman I purchased it from said he ran regular ever since it was rebuit. What range of timing are you guys running.
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  #2  
Old 07-01-2006, 06:35 AM
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Default RE: Pinging

I rebuilt my 352 this winter. I have the stock timing (6 BTDC) and have only been using regular with no problems.

Is your cooling system in good shape? Does your temp gauge read accurately?

going to a colder range spark plug can be a fairly easy way to cut down on the chance of pre-ignition.

An overly lean mixture can also be a cause of hotter cylinders.

If it runs ok when you punch it then one suspects the accelarator pump is providing enough gas to make for a reasonable mix but without that perhaps its' too lean?

How do your plugs look?

john
'58 Hardtop
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  #3  
Old 07-01-2006, 12:46 PM
KULTULZ
 
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Default RE: Pinging

I would check initial timing, that the breaker plates in the distributor move freely, that the vacuum advance cannister holds vacuum and finally the mechanical/vacuum advance curves.

The 430 has a higher CR than the 352. With this new formulated gas (methanol mix), it may be necessary to go to premium fuel.
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  #4  
Old 07-01-2006, 05:28 PM
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byersmtrco byersmtrco is offline
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Default RE: Pinging

DEFINENTLY run premium gas in it. Maybe even octane booster. Those motors were under rated at 10-1 Comp. Those "wedge" chambers were not the most efficient thing (It's why Ford did away with em.)
I would also recommend finding a way to juice up the voltage at the plugs. The easiest (cheapest) fix is the Pertronix (spl/chk) ign conversion. It does way with the points using the stock dist. They also recommend the "Flame thrower" coil. It's available in black, so if you're going for the stock look, it's hardly noticeable.
Both my TBirds have that setup and (so far) no problems, pinging or any other drive ability issue. It will also improve gas mileage.

John
No Replacement for Displacement
I'll find a 430 Bird (someday)
Hopefully, it'll have a hole in the
roof (1 of 377)
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John Byers
1960 Convertible (Orig owner)
Pic of car with my son Justin (15 Y/O 6'1")
Poss 3rd Gen T/B owner
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  #5  
Old 07-01-2006, 09:27 PM
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Default RE: Pinging

getting the best possible spark is always a good move!

If you make those kinds of substantial improvements in the ignition system, consider also widdening the plug gap as well as indexing the plugs (this amounts to rotating them so that the gap points towards the intake valve. Just mark the plug with some ink before installing).
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  #6  
Old 07-01-2006, 11:34 PM
KULTULZ
 
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Default RE: Pinging

PERTRONIX II is a very good idea. I just had another thought that the combustion chambers may be heavily carbonized, increasing the static CR.
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  #7  
Old 07-03-2006, 11:49 AM
Travlin Travlin is offline
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Default RE: Pinging

Something else you might wanna consider is changing to a Ford Durospark II electronic ignition. This was written for a Mustang conversion but I'm sure doing a Thunderbird isn't out of the question.

From: http://www.mustangsteve.com/conversion.html

http://www.mustangsteve.com/durasparkfinal.jpg

The white wire connection is not absolutely necessary, but it's function is to energize the "retard while starting" function of the Duraspark II module. When cranking the engine, the module actually retards the spark so the engine can crank easier. This allows you to run additional initial advance
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  #8  
Old 07-07-2006, 02:08 PM
Strange Strange is offline
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Default RE: Pinging

>PERTRONIX II is a very good idea. I just had another thought
>that the combustion chambers may be heavily carbonized,
>increasing the static CR.

K,

Could you tell us how difficult the PERTRONIX II conversion was? Did you go with the flamethrower coil? Even better how about a picture?

Thanks!

Strange Square
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  #9  
Old 07-07-2006, 06:56 PM
KULTULZ
 
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Default PERTRONIX II

http://www.rodandcustommagazine.com/techarticles/73738/

(Cut And Paste Into Browser)
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  #10  
Old 07-08-2006, 06:42 PM
Strange Strange is offline
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Default RE: PERTRONIX II

>http://www.rodandcustommagazine.com/techarticles/73738/
>
>(Cut And Paste Into Browser)

KULTULZ

Thanks! It looks somewhat easy. How long have you been running it? I just recall all the problems I had with the electronic ignition in my '76 Cutlass. **** modulator would heat up and fail. The '76 had an overheat problem a little akin to what people say the squarebirds can have. I almost considered converting back to points. I should have looked at the pertronix system instead if it resists heat better.

Cheers,
Strange Square
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