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bad memory
Dodge Dakota
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6/14/2006
16:46:50
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 Subject: colder plugs
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Message:
hey can someone please post the #'s for the NGK & autolite plugs (1 range colder) for the 3.9's
Thanks
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cuzindoug
GenIII
 
6/15/2006
00:02:49
|  RE: colder plugs
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Message:
Autolite 3923's
If it doesn't fit, force it. If it breaks...well...it needed to be replaced anyway.
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NGKs
Dodge Dakota
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6/15/2006
22:41:49
| RE: colder plugs
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My memory is bad also. What is the plug number for the NGK's for one range colder?
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Good Memory
Dodge Dakota
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6/16/2006
00:50:05
| RE: colder plugs
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Message:
FR-5
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Baller04B
Dodge Dakota
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6/16/2006
07:11:48
| RE: colder plugs
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Message:
I think the NGK might depend on the year of the truck, too. When I go to NGK website and search for my truck (2003 3.9)the stock number is ZFR6F-11 and then that would make 1 range colder be ZFR7F-11. When I search for my dad's truck (1998 3.9) the they say the stock number is FR5-1 and then the 1998's 1 range colder would be FR6-1.
If I am missing something someone please let me know.
Thanks
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Um
Dodge Dakota
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6/16/2006
09:11:58
| RE: colder plugs
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If i remember correctly, cause my memory is bad too, the NGK's number system is in reversed. So, the one heat range colder for the FR6 would be the FR5.
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ahahaha
Dodge Dakota
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6/16/2006
09:14:27
|  RE: colder plugs
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LOL good memory,
i got a good laugh out of these posts
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Baller04B
Dodge Dakota
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6/16/2006
09:31:11
| RE: colder plugs
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Message:
The colder heat ranges are higher numbers for NGK. Check out their website.
And either way you look at it it would still depend on the year of the truck. (At least as far as their website is concerned) The 1998 states that the stock is FR5 - 1 range colder is FR6. My 2003 states the stock is FR6 - 1 range colder would be FR7. This information is just coming from their website not trying to prove anyone wrong I just want to understand completely.
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Um
Dodge Dakota
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6/16/2006
10:48:45
| RE: colder plugs
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Message:
Baller, you may be right. I'm trying to go from memory and my memory is BAD. I'll have to check out the sight and refresh my memory.
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J and J Auto
GenII
6/19/2006
22:12:08
| RE: colder plugs
IP: Logged
Message:
The dif is in length of the electrode
stock 12 champ
Autolite 3924, extended 5224
1 colder
3923
the 3923 exact cross over to NGK is the FR5
3924 FR4
yes ngk is backwards for heat range but the FR5
we have been installing in all the V6 V8 92 threw
03 and run fine
going 1 colder in the plug code listed for your
truck at NGK.com will also have the same resaults
1 colder
The feed back to the cmputer with the resistor
type ngk works better than the non resistor
autolite they do run a little better
1 other thing here be sure your not getting a plat
or standard electrode plug the FR is the v power
plug plat plugs must be gaped larger or they have
a tendancy to ping .005 bigger with plat
Get the FR5 or FR5-1
obd1 .035
obd2 .040
you will not be disipointed they run great the only
other plug that will run better is the halo at
$8 each in these motors
Larry
J&J Auto
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