| From | Message |
SharpV6
GenII
4/15/2001
12:50:32
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 Subject: Autolite Plugs
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Message:
New to this great info board. Just bought a set of autolite 5224's to try out. I have been running 3924's and thought I would try a set of 5223's or 5224's since I currently do not have a pinging problem. Tried to get a set of 5223's and no one could find a listing for them. I have a MSD 6A MSD Blaster SS Coil MSD 8.5 Wires 180 Thermostat K&N Drop In Filter Dynomax Super Turbo Kit 3.55 L/S. Looking for suggestions on the spark plug gap to start with. I was thinking about .040.
93 CC 4X4 V6 AUTO
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RonW
*GenIII*
4/15/2001
13:17:12
| RE: Autolite Plugs
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Message:
I did .045 but with 3923's.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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Ray Thompson
Unregistered
4/15/2001
23:05:02
| RE: Autolite Plugs
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Message:
Crap, did I just screw up?
I just replaced my spark plugs, and used the 3923s. I swear I read somewhere that the gap should be set to .035? The truck seems to run fine, but I've really only taken it around the block. Is this something I should be concerned about and go back and re-gap them?
99 CC Sport 4X4 5.2V8 Auto
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RonW
*GenIII*
4/15/2001
23:08:41
| RE: Autolite Plugs
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Message:
You should gap yours to whatever it says under your hood (factory specifications) unless you have installed an MSD ignition. Then you can increase your gap by .005-.010.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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Ray Thompson
Unregistered
4/15/2001
23:17:50
| RE: Autolite Plugs
IP: Logged
Message:
So what affect will a .05 decrease in gap have on my engine? Should I not drive it?
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RonW
*GenIII*
4/15/2001
23:33:19
| RE: Autolite Plugs
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Message:
Careful, I said .005. There's a lot of difference between .005 and .050. Anyway, just kidding. Here's the deal. A gap of .035 to .040 is quite a gap to begin with. The spark from a coil has to jump that gap to ignite the air/fuel mixture. The ignitions of today increase the voltage from ~12 volts to ~24K-28K volts at the gap. That's what it takes to jump that .040 gap.
In comes the MSD ignition. The MSD ignition takes the 12 volt ignition input and jumps the primary side to 470 volts. That primary side at 470 volts is what collapses and brings about a secondary voltage of 45K volts. That's why a Blaster SS coil and 8.5 mm plug wires are recommended. That kind of a spark will jump a .045 gap fairly easily. Some people even go .050 without a problem.
As for your stock gap, if your gap is too wide then there's a chance the spark might not make it all the time. If the fuel can't ignite, then you get no power for that cycle of that cylinder. Next time around you'll have excessive air/fuel in that cyl. Anyway, you get the idea. It's not that you shouldn't drive it. If it's running ok, then go ahead. As soon as you get a chance you should bring them back to whatever it says on your hood, though.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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SharpV6
GenII
4/16/2001
00:10:31
| RE: Autolite Plugs
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Message:
Thanks for the info. I am going to try .045 after I get the belt tensioner replaced, the bolt that holds it on broke last night, luckly I was only about 1/2 mile from home.
93 CC 4X4 V6 AUTO
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durtydog
GenIII
4/16/2001
18:28:33
| RE: Autolite Plugs
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Message:
good info ron!learning a lot from all these posts!thanks steve
98 4x4 club cab sport 5.2
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95DakotaV8
*GenII*
4/16/2001
20:09:31
| RE: Autolite Plugs
IP: Logged
Message:
Ray, .035 is the correct gap for stock ignitions.
Ron, I don't have the MSD yet but I have a 42k volt Accel Super coil. When I installed that, I opened the plug gap to .040, I assume that the coil is capable of briding that gap? It is running really well at that gap. I assume from your earlier post that the stock coil produces about 24-28k volts?
Kevin Rants
95 CC SLT 4x4, 5.2L, 5spd
Family Man!
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RonW
*GenIII*
4/16/2001
20:14:55
| RE: Autolite Plugs
IP: Logged
Message:
If it works that's great. You have to be careful about coils because the number they give you is what it can get up to but they never tell you what they need to get there. On the MSD coils, they're rated at 45K volts and they won't come close if there's only 12 volts on the primary side. I'm sure the Accel is the same way. There's got to be something to boost the primary voltage. I believe the stock ignitions and coils of today do well to get 12 volts to 24K volts.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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Jonas Janek
Unregistered
4/17/2001
00:20:31
| RE: Autolite Plugs
IP: Logged
Message:
Ok will someone sum this up for me? I have a 2000 4.7 V8. I want to change to these plugs for the expected 4 horse power. What modle and number do i need, what gap, and do I need the 180 therm. too?
Jonas
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RonW
*GenIII*
4/17/2001
01:11:05
| RE: Autolite Plugs
IP: Logged
Message:
Hi Jonas,
I think we lost you in the translation somewhere. First of all the 4 hp requires the MSD 6 ignition which will not work on your 4.7 but take it easy. Your setup requires a "stacker" ignition. MSD is planning on releasing one by summer. Now that could be the end of summer, don't know for sure yet. Right now the best plugs for your engine seem to be the Bosch platinums, 4418's what's stock for your truck but 4417's are one step colder if you have pinging problems. Now, a warning: By the time MSD releases the new ignition, they may recommend against platinum plugs in which case you'll need to change them along with the ignition. The 180º t-stat is also mainly for pinging. Some like to run that because supposedly, the engine runs best at 183º coolant temperature.
Sorry we lost you and I hope this clears things up. If not, ask away and we'll try to make it less muddy for you.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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dakotapta
Unregistered
4/17/2001
19:22:58
| RE: Autolite Plugs
IP: Logged
Message:
Hey can someone direct me to some info on this
"stacker system" that MSD is developing for the
4.7L engine??? I am curious to see how they are
goign to improve upon this system!!!
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dakotapta
Unregistered
4/17/2001
19:24:11
| RE: Autolite Plugs
IP: Logged
Message:
Hey can someone direct me to some info on this
"stacker system" that MSD is developing for the
4.7L engine??? I am curious to see how they are
goign to improve upon this system!!!
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RonW
*GenIII*
4/17/2001
20:04:08
| RE: Autolite Plugs
IP: Logged
Message:
There may not be any information on their website yet but you're welcome to try.
http://www.msdignition.com
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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RonW
*GenIII*
4/17/2001
20:05:27
| RE: Autolite Plugs
IP: Logged
Message:
There may not be any information on their website yet but you're welcome to try.
http://www.msdignition.com
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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big G
GenIII
4/23/2001
13:02:52
| RE: Autolite Plugs
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Message:
Just installed a set of 3923's in my V-6 gaped at .040 (hood spec's) and I don't see much of a difference in performence (no pinging). My truck otherwise is currently stock and I'm a little dissapointed in the results of the plug change... Anyone else have better results with a 3.9?
2001, 3.9, 2WD Auto, Loaded SLT Club Cab, Sport Suspension
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RonW
*GenIII*
4/23/2001
13:35:39
| RE: Autolite Plugs
IP: Logged
Message:
Like I said, you're not likely to see a performance gain just changing to a colder plug. If you want gains you have to pay more than $8. An MSD ignition would do that, ~$135, but it isn't going to buy you much. If you want more power then, you'd better start saving because price per hp is not cheap. That colder plug will eliminate some pinging though which will let you keep your engine longer. I guess you could call that performance.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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big G
GenIII
4/23/2001
13:40:26
| RE: Autolite Plugs
IP: Logged
Message:
Thanks Ron..... Would an Accel Supercoil help? And reguarding the MSD Ignition, which one would your recomend and how simple are they to install.
; )
2001, 3.9, 2WD Auto, Loaded SLT Club Cab, Sport Suspension
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RonW
*GenIII*
4/23/2001
13:46:52
| RE: Autolite Plugs
IP: Logged
Message:
The MSD 6A is sufficient. How simple to install is relative. If you're mechanically inclined, pretty simple. The Accel coil is good. When you get the ignition get the universal harness and MSD 8.5 mm super conductor plug wires as well. That'll make it easier and better. Cheapest place to get it is summit racing
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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SharpV6
GenII
4/23/2001
23:03:34
| RE: Autolite Plugs
IP: Logged
Message:
Got my belt tensioner replaced along with changing over to the 5224's and relocating the IAT to the factory air intake hose. The truck runs great and no pinging on 87 octane fuel. Now to take a road trip to check the gas mileage.
93 CC 4X4 V6 AUTO
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???
Dodge Dakota
JOIN HERE
6/27/2002
16:29:25
| RE: Autolite Plugs
IP: Logged
Message:
Anyone recommending Autolite's ???
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