Go read up on the Fuel line mod. If somebody hasn't done it for you, do it for yourself. The factory routing is problematic.
That is a new one for me... an HEI causing pinging. Here is what could be happening:I believe the new NGK plugs with the washer removed will help another problem that the HEI started. PINGING
That is a new one for me... an HEI causing pinging. Here is what could be happening:
- HEI's create a hotter version of what is called the 'spark kernal' (the initial phase of combustion, from which all the rest of the combustion spreads)
- A hotter spark kernal will cause the initial phases of the combustion process in the chamber to move along faster.... In that aspect, it is somewhat like more timing advance in the system.
- The /6 combustion chamber is not the best for too much timing advance.
- So you may have to retard the initial timing a few degrees now. Where is it set now?
HEI is not causing pinging. It doesn't work that way (hotter spark kernel, etc etc). What's happening is that the distributor the OP put in as part of his conversion has different advance curves than the one he took out, and it's not a match for his driving conditions, his gasoline, and his base timing (wherever he set it).
Temporary solution is probably to retard the base timing as nm9 says—what's it set at now?
Long-term optial solution: get with DusterIdiot over on slantsix.org for a distributor recurve (or recurved distributor).
HEI is not causing pinging. It doesn't work that way (hotter spark kernel, etc etc). What's happening is that the distributor the OP put in as part of his conversion has different advance curves than the one he took out, and it's not a match for his driving conditions, his gasoline, and his base timing (wherever he set it).
Temporary solution is probably to retard the base timing as nm9 says—what's it set at now?
Long-term optial solution: get with DusterIdiot over on slantsix.org for a distributor recurve (or recurved distributor).
It may just need to be brought in more slowly, but not necessarily less total. I did not realize that the HEI conversion was with a different distributor.Yes it really need less centrifugal advance.
Temporary solution is probably to retard the base timing as nm9 says—what's it set at now?
Long-term optial solution: get with DusterIdiot over on slantsix.org for a distributor recurve (or recurved distributor).
Unless your cylinder head is a '60-'62 item, remove the spark plug washer rings—they are not to be used with '63-'74 heads, and using them makes the plugs run hot, which increases the tendency to ping.
Also, today's Autolite spark plugs are Chinese junk. Don't know how a 4-cylinder '90 Dakota should figure into it (shouldn't), but swap 'em out for a set of NGK ZFR5N plugs (stock № 3459).
Uggggh. I know.That plug number NGK ZFR5N is for a 1990 dodge dakota. The reason why I did this is because try and walk into an auto zone and ask for a plug with a part number. They will have no clue what you are talking about (at least around here). Hell you have to give the the engine size, is it a 4x4, what color is it for damm wiper blades. But if you give them the year make and model of the car and then ask for NGK you will not get that deer in the headlights look. Here is a screen shot to show you what it fits.
View attachment 1715123375
That plug number NGK ZFR5N is for a 1990 dodge dakota
The reason why I did this is because try and walk into an auto zone and ask for a plug with a part number. They will have no clue what you are talking about
Oh. Okeh, I didn't know they put 'em in those, too.
That's a fair point, as per this and the attached.
Take the ring washers off 'em, though, if you haven't already.
View attachment 1715123442
Cool. Also read this thread. It's long but the payoff at the end is very good.