pinging - Tilted Forum Project Discussion Community

leftturn109 · 09-06-2003, 07:30 PM

I've got a 1965 plymouth valiant i just put a new short block in and got it running but it doesn't idle smooth on the stock timing so i moved it till it sounded good and smooth the head is about two years old so i know the parts there are pretty good but when i climb hills it is pinging my dad says its nothing to worry about but i don't always trust him id like some mo opinions on the matter.

Peryn · 09-06-2003, 07:54 PM

Dont let it ping. Go into a lower gear when climbing hills or buy higher grade gas. Pinging is BAD for the engine. i remember hearing how in more extreme cases it can totally destroy your pistons. something like destroying the top, messing up that layer on top of it ... barrier layer or someting... and the heat can actually get to the piston then and start to melt/burn holes in it...

either way, if its pinging a lot it IS something to worry about a little...

Ashton · 09-07-2003, 01:04 AM

You probally advanced the timing too far...... A few degrees is ok but any more and you're bound to ping, what you need to do it set it back to stock with a timing light and then adjust the idle mixture until it smooths out.

Moonduck · 09-07-2003, 09:56 AM

Agreed, pinging is very bad. Take a timing light and play with your carbs after it is timed. Detonation does Very Bad Things to your engine's innards. You might also consider moving to a hgiher octane rated gasoline if you cannot correct it by properly timing it ad adjusting your carbs.

FastShark85 · 09-07-2003, 10:48 AM

Ditto on the higher octane. Pinging is also known as premature detonation. The gas is igniting before it should. You can destroy an engine that way. Higher octane fuels are harder to ignite, and thus should not ignite before the spark is discharged.

Modern day cars usually have knock sensors installed that will adjust the timing to minimize pinging, allowing owners to use lower octane fuels.

Ashton · 09-07-2003, 01:47 PM

A inline 6 dosen't require high octane........ whats wrong is the timing is advanced to far, at idle it sound and run fine...... even while putting down the road it will seem fine, but when under a load like excellerating, punching the gas or going uphill it will ping because the vacuum advance is advancing the timing beyond specs......

Peryn · 09-07-2003, 02:51 PM

"A inline 6 dosen't require high octane........ "

Thats a pretty vague and inaccurate generalization. I've got an I6 i love, and timing is correct. Both vaccuum advance and mechanical advance are working properly and to specs, yet i still ping more than i would like and sometimes need to go upto 89 octane. A non high-performance i6 shouldn't require high octance in stock and perfect workin order. Any engine with any sort of wear on it or a highperformance engine may require higher octance fuel to reduce pinging if it occurs too much.

etla · 09-07-2003, 04:33 PM

Peryn is correct. You didn't say much about your build (actually you didnt say you had a slant6 but apparently it only has one head) but I had better than 250 out of the 225 in my Aspen and it required premium gas. Hard on transmissions until I found a 6/727 out of a truck.

leftturn109 · 09-07-2003, 04:50 PM

ok i have some stuff to try i will tell ya how it goes

leftturn109 · 09-07-2003, 08:31 PM

thanks everybody i put it back to stock and played with the mixture and now its good

Moonduck · 09-08-2003, 07:35 AM

Glad to hear it.

Scorps · 09-08-2003, 08:39 AM

Quote:

Originally posted by leftturn109
I've got a 1965 plymouth valiant i just put a new short block in and got it running but it doesn't idle smooth on the stock timing so i moved it till it sounded good and smooth the head is about two years old so i know the parts there are pretty good but when i climb hills it is pinging my dad says its nothing to worry about but i don't always trust him id like some mo opinions on the matter.

Advance the alternator...my van did the samething I turned it ever so little (counter-clockwise) then tighten. take for a drive see what happens...some times you have to turn it diferent wasy to get it perfect.

Ashton · 09-08-2003, 06:20 PM

Quote:

Originally posted by Pain Train
Advance the alternator...my van did the samething I turned it ever so little (counter-clockwise) then tighten. take for a drive see what happens...some times you have to turn it diferent wasy to get it perfect.

Peryn · 09-08-2003, 09:36 PM

Quote:

Originally posted by Pain Train
Advance the alternator...

im assuming alternator = distributer. In which case that whole things makes sense. Not the best way to figure it out, but it will work.

macmanmike6100 · 09-08-2003, 10:17 PM

Quote:

Originally posted by leftturn109
thanks everybody i put it back to stock and played with the mixture and now its good

congrats! and thanks - this thread added a lot to my basic knowledge of cars

leftturn109 · 09-10-2003, 12:57 AM

If i knew how to put a picture up i would post one of my car for you guys

Scorps · 09-10-2003, 09:44 AM

Quote:

Originally posted by Peryn
im assuming alternator = distributer. In which case that whole things makes sense. Not the best way to figure it out, but it will work.

oops my bad. Half asleep sry.

09-06-2003, 07:30 PM	#1 (permalink)
leftturn109 Crazy Location: Olalla washington	pinging I've got a 1965 plymouth valiant i just put a new short block in and got it running but it doesn't idle smooth on the stock timing so i moved it till it sounded good and smooth the head is about two years old so i know the parts there are pretty good but when i climb hills it is pinging my dad says its nothing to worry about but i don't always trust him id like some mo opinions on the matter.

09-06-2003, 07:54 PM	#2 (permalink)
Peryn Junkie Location: San Diego, CA.	Dont let it ping. Go into a lower gear when climbing hills or buy higher grade gas. Pinging is BAD for the engine. i remember hearing how in more extreme cases it can totally destroy your pistons. something like destroying the top, messing up that layer on top of it ... barrier layer or someting... and the heat can actually get to the piston then and start to melt/burn holes in it... either way, if its pinging a lot it IS something to worry about a little... __________________ Dont cry kid, It's not your fault you suck.

09-07-2003, 02:51 PM	#7 (permalink)
Peryn Junkie Location: San Diego, CA.	"A inline 6 dosen't require high octane........ " Thats a pretty vague and inaccurate generalization. I've got an I6 i love, and timing is correct. Both vaccuum advance and mechanical advance are working properly and to specs, yet i still ping more than i would like and sometimes need to go upto 89 octane. A non high-performance i6 shouldn't require high octance in stock and perfect workin order. Any engine with any sort of wear on it or a highperformance engine may require higher octance fuel to reduce pinging if it occurs too much. __________________ Dont cry kid, It's not your fault you suck.

09-07-2003, 04:33 PM	#8 (permalink)
etla Junkie Location: Canada eh?	Peryn is correct. You didn't say much about your build (actually you didnt say you had a slant6 but apparently it only has one head) but I had better than 250 out of the 225 in my Aspen and it required premium gas. Hard on transmissions until I found a 6/727 out of a truck. __________________ Subvert the Dominant Paradigm

09-07-2003, 01:04 AM	#3 (permalink)
Ashton PORNHOUND Location: California	You probally advanced the timing too far...... A few degrees is ok but any more and you're bound to ping, what you need to do it set it back to stock with a timing light and then adjust the idle mixture until it smooths out.

09-07-2003, 09:56 AM	#4 (permalink)
Moonduck Junkie Location: SE USA	Agreed, pinging is very bad. Take a timing light and play with your carbs after it is timed. Detonation does Very Bad Things to your engine's innards. You might also consider moving to a hgiher octane rated gasoline if you cannot correct it by properly timing it ad adjusting your carbs.

09-07-2003, 10:48 AM	#5 (permalink)
FastShark85 Psycho Location: In the garage, under the car.	Ditto on the higher octane. Pinging is also known as premature detonation. The gas is igniting before it should. You can destroy an engine that way. Higher octane fuels are harder to ignite, and thus should not ignite before the spark is discharged. Modern day cars usually have knock sensors installed that will adjust the timing to minimize pinging, allowing owners to use lower octane fuels.

09-07-2003, 01:47 PM	#6 (permalink)
Ashton PORNHOUND Location: California	A inline 6 dosen't require high octane........ whats wrong is the timing is advanced to far, at idle it sound and run fine...... even while putting down the road it will seem fine, but when under a load like excellerating, punching the gas or going uphill it will ping because the vacuum advance is advancing the timing beyond specs......

09-07-2003, 04:50 PM	#9 (permalink)
leftturn109 Crazy Location: Olalla washington	ok i have some stuff to try i will tell ya how it goes

09-07-2003, 08:31 PM	#10 (permalink)
leftturn109 Crazy Location: Olalla washington	thanks everybody i put it back to stock and played with the mixture and now its good

09-08-2003, 07:35 AM	#11 (permalink)
Moonduck Junkie Location: SE USA	Glad to hear it.

09-10-2003, 12:57 AM	#16 (permalink)
leftturn109 Crazy Location: Olalla washington	If i knew how to put a picture up i would post one of my car for you guys