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mike n
Unregistered
4/19/2001
17:54:20
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 Subject: platinum plugs
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Message:
I've been told not to use platinum spark plugs in Dakotas. First of all, why is that? And second, the few people i've talked to had V8's, and i have a six. I wouldn't think that would matter since the engines are pretty much the same minus two cylinders, but i wanted to double check before i bought the plugs. thanks
mike
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dakotapta
Unregistered
4/19/2001
18:00:55
| RE: platinum plugs
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Message:
if you have a six'r, then it probably won't hurt
yours. I have the 4.7L v8 with the coil over
plugs. I tried them and it hurt performance, and
plus after i did that i got word from a friend
that works at a dealership that the 4.7L's should
not take platniums, unless you plan on eventually
changing all 8 coils b/c it will eventually
destroy the coils due to the change in resistance
between copper and platnium. I guess new design,
is slightly flawed!?!?!? i like the autolites the
most, i use them in my dodge and all the fords in
the family and possibly my rebuilt pontiac gto.
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RonW
*GenIII*
4/19/2001
18:35:55
| RE: platinum plugs
IP: Logged
Message:
Hmmm...that seems to be the opposite of what I've heard. If you have other than the 4.7 or 2.5 your plug of choice would be the Autolite 3923 coppers, else, people have had luck with the Bosch 4417 platinums with the 4.7's.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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sandman
Unregistered
4/29/2001
00:24:10
| RE: platinum plugs
IP: Logged
Message:
If you are going to use a platnium plug get one that has dual platinum electrodes. You can run dual platinum plugs for 60000-100000 miles. The older single platinum designs are good for about 40000 miles. Leave your plugs and wires alone. Once you unhooks your wires from your plugs you drasticly shorten the life of your plug wires. This will also shorten the life of the plugs. P.S. Never try to regap a Platinum plug after it has been used in an egine it will cause the electrode to crack and it can come apart in your engine which is not a good thing.
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Patrick ODay
GenIII
4/30/2001
14:22:49
| RE: platinum plugs
IP: Logged
Message:
The latest, greatest ignition, is the coil on plug setup (COP). This method uses a small inductive discharge coil clipped directly to each spark plug. It eliminates plug wires entirely and does not usually use the waste spark strategy so it has twice the amount of time available to saturate. This basically doubles the RPM capability of the system over other ignition systems. This is the system used in FI and Indy Car engines which generate outputs of over 300hp/L and 16,000 rpm.
Split electrode plugs are a waste of money because the spark will only jump to one of the electrodes at a time.
A platinum tipped plug will easily last twice as long on most engines. There just isn't any rocket science here.
Thin wire Platinum plugs can't carry heat away as fast as a larger copper core in a more conventional plug. There is a difference is resistance but it's nill, forget about that issue. If you want to go to platinum, get a 180Deg t-stat go for it.
Patrick ODay
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Piglet Panda
GenI
5/05/2001
11:45:52
| RE: platinum plugs
IP: Logged
Message:
I have had great success with Bosch Platinum
Plus 4s. I had them in my '87 Jeep 4cyl and all
my SAABs (no SAAB story!) - that includes both
points and electronic ignition.
I had heard warnings that these plugs in the
newer DI (direct ignition) systems (COP-type
setup) destroyed DI cassettes, but ours is still
rockin' on after a couple of years of combo
driving (husband/wife). I have noticed the
mileage is starting to fall off; time to change
the plugs, I reckon.
The original-style single-electrode Bosch
Platin[um]s were crap; I had better luck with
NGK.
As soon as I find them on sale (srp: $6 ea),
I'm going to jump on a set and report back to
the group
'98 DakSport C/C 3.9 2WD
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