Just an add-on to your post Al:
For the standard plug design, make sure they are the double platinum - 1
platinum ball on each of the center wire and side wire. They are classified
as APP3923 (2 P's for 2 platinum balls) vs. AP3923 (1 P for single platinum
on the side wire). If not, the gap will still change on you as the center
wire is the material is substantially softer than platinum. The sparking
will eat away at it thus changing the gap.
The AP3923 does provide better protection from gap erosion than the standard
3923. The center wire can transfer the heat away from the spark better than
the side wire and prolong the gap. The APP3923 obviously provides the best
long-term solution.
Does anyone know how the Bosch +4 look? Is there a platinum ball on the
inside of each of the legs and one on the center wire? I haven't looked at
them yet. I still debating what to do on my 4.7L. Thanks all!
Sean
'92 RC Sport 3.9L 5spd - 250,000mi!
'01 CC SLT+ 4.7L 5spd 3.92 LSD Mobil-1!
-----Original Message-----
From: Al & Jeanna Figols [mailto:ALJF@mhonline.net]
Sent: Monday, April 02, 2001 9:23 PM
To: dakota-truck@buffnet.net
Subject: Re: DML: Re: RE: 4.7L Spark Plug Info
The coil over plug design has been around for several years with several
auto manufactures. I can't remember ever hearing or reading from any
experienced source NOT to use platinum plugs. As a matter of fact, some
GM models with the coil over plug system come originally equipped with
platinum plugs. If you want longevity from a spark plug, then you
should go with the platinums. Many GM and Ford vehicles with the 100K
mile tune-up interval can claim that becasue of the use of platinum
plugs as original equipment.
Al
Kyle Kozubal wrote:
>
> > Bosch double platinums, Kyle.
> >>
> >
> >
> >>Hey Kyle, I currently run the Bosch +4's, #4418. Yeah, they're a little
> >pricey, but it does run a bit smoother now, a little more responsive as
> >well as a tad more mpg. But, as always. ymmv :)
>
> How come I keep reading about how NOT to use platinum tipped plugs o nthe
> 4.7L, due to the "coil over the plug" design? I think I read about it
within
> the Dakota section on moparchat.com as well as in the DML archives. Any
> insight on this? I was already leaning towards getting a good solid
platinum
> designed plug, this way I wont have to mess with the plugs for along time.
> This would be good cause it looks like its a job just getting to the
plugs.
> I dont mind spending the money/time on good plugs, as long as they will
make
> her Durango run good. I mean, it definately isnt a $7 Autolite Copper
spark
> plug change on my Dakota, which takes a mere 10 minutes. Like I said, I
> juist want to make sure I get a great darn plug, reguardless of the price.
I
> want to do this once, and not have to worry about it for a loooooong time.
> THANKS ALL!
> Kyle
> 93 Dakota 4x4 V6....working on a wicked 2000 4.7L Durango 4x4.....
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