| From | Message |
alan
Unregistered
4/03/2001
00:39:07
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 Subject: spark plugs
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Message:
what is the performance difference between autolite 3923's and splitfire sf522d plugs. splitfire number is oem crossref.
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Mark
Forum Moderator
4/03/2001
00:42:02
| RE: spark plugs
IP: Logged
Message:
I had the splitfires in a '93 V8 and they weren't the best plugs, especially with a $4 pricetag. I prematurely yanked them. They caused too much ping and an occasional misfire.
-Mark
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Bernd
GenIII
4/03/2001
01:10:10
| RE: spark plugs
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Message:
The SF522D are a projected tip and the 3923 Autolites are a standard tip. That's the physical difference.
Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous
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alan
Unregistered
4/04/2001
00:26:02
| RE: spark plugs
IP: Logged
Message:
I guess I should have been more more specific, What are the benefits and/or reasons performance-wise of the 3923 plugs?
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RonW
Gen III
4/04/2001
02:08:18
| RE: spark plugs
IP: Logged
Message:
The 3923's are one step colder so they help to prevent detonation. They also don't stick as far into the cylinder. You'll have to go to King Bernd for the performance benefits if any.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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14wntr
GenII
4/04/2001
09:41:29
| RE: spark plugs
IP: Logged
Message:
I installed the 3923's in my 92 5.2 and would like to know if I should be running a bigger gap than the stock .035? I do not have any aftermarket ignition yet, but I am installing an MP PCM today. Any advice would be great!
Guns cause crime like flies cause garbage!
92 4x4 5.2L Auto 3"FM
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98SPRTV6
GenIII
4/04/2001
11:15:40
| RE: spark plugs
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Message:
what have ya'll heard about the bosch 4's in a 3.9L? I just bought some and I will be putting them in this weekend
'98 Sport 3.9L 5-speed 3.55. Custom CAI, ASP Pullies, Traction Bars.
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RonW
Gen III
4/04/2001
11:39:15
| RE: spark plugs
IP: Logged
Message:
On the gap of plugs, stay with the stock gap until you get an aftermarket ignition, e.g., MSD 6A.
Waste of money if you consider that the 3923's have been proven to work the best at less than $1 per plug.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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Mark
Forum Moderator
4/04/2001
11:56:49
| RE: spark plugs
IP: Logged
Message:
I used bosch platinums for a few years before recently switching to the autolites. I had excessive ping with 93 octane fuel in the rpm range of 3000-4000.
-Mark
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14wntr
GenII
4/04/2001
12:20:14
| RE: spark plugs
IP: Logged
Message:
Thanks for the reply!
Guns cause crime like flies cause garbage!
92 4x4 5.2L Auto 3"FM
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