Spark Plugs

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Oct 24, 2005 | 10:34 AM

#16

Oscar Meier

Elder User

Joined: Sep 2003

Posts: 817

Likes: 1

I have been running the Acell plugs & wires that came with my TFI Tune-up kit. Since that time I have converted over to DSII system. I just cleaned & regapped them and they are doing great.

Oct 24, 2005 | 11:24 AM

#17

whimsey

Senior User

Joined: Feb 2004

Posts: 303

Likes: 0

From: "Garden State"

In my 1989 F-150 with the 300 I changed the factory Motorcraft plugs at 36,000 miles and they were still like brand new and the truck still ran great. I used Autolite Platinum's. The truck actually ran better with the Motorcraft plugs. After 30,000 miles I changed the plugs again this time using the recommended Motorcraft plugs. Interestingly enough the Autolite platinum plugs didn't wear as well as the original non platinum Motorcraft factory plugs.

Whimsey

Oct 24, 2005 | 01:30 PM

#18

superbepro

Senior User

Joined: Jun 2004

Posts: 103

Likes: 0

FI plugs in carbureted engine/head

Has anybody tried this with success (using plugs from fuel injected 300 engines in carbureted 300 engines)? I read somewhere that the use of deeper FI spark plugs will center the spark better in the chamber of carbureted heads (it does not hit the piston in case some may wonder about clearance issues) and allow for better combustion and therefore more power and/or fuel efficiency. I also read that one guy who tried this did actaully get a lot pinging, so he went back to carbureted-type plugs (to his carbureted 300 engine). Any input will be appreciated.
Thanks, Raul

Last edited by superbepro; Oct 24, 2005 at 01:32 PM.

Oct 24, 2005 | 02:14 PM

#19

andym

Post Fiend

Joined: Mar 2002

Posts: 19,402

Likes: 38

From: Bonita Springs FL

Quote:

Originally Posted by quicklook2

then send the turbonator to andym.

What the hell?

Oct 24, 2005 | 02:35 PM

#20

77300i6

Posting Guru

Joined: Apr 2004

Posts: 1,127

Likes: 2

From: Lewistown, PA

When I bought my truck it had champions in it(which are made for lawn mowers and dodge). I knew that autolite was a Ford product, so I bought them. CRAP!!!!!!!!!!!!! That's all my truck ran like. I fiddled with everthing. After awhile I puled 'em out and put Motorcraft plugs in, it ran 10 times better.
The acceleration and idle quality was much smoother. Gas mileage improved by about 1-1.5mpg. The whole time it had autolites in it the engine felt retarded.

Oct 24, 2005 | 09:49 PM

#21

Schmids4.9l

Posting Guru

Joined: Jul 2004

Posts: 1,611

Likes: 0

From: Bored town OH

I have motorcraft "platinum" plugs. After 12k miles they still look and work good.

Oct 25, 2005 | 10:55 PM

#22

GregTruck

Elder User

Joined: Oct 2004

Posts: 556

Likes: 0

From: Ridgeway, Virginia

Quote:

Originally Posted by quicklook2

are those non-platinum? that sounds too cheap for a platinum plug from bosch.

Yes, Bosch Super is the base plug, non-platinum. I may have confused things by mentioning having trouble with platinum plugs in another vehicle. Supers are around $1 and Platinums 1's are around $2.

I have seen more than one Bosch Platinum 1 have the tiny platinum rod slip inside the insulator. What happens is the rod drops down and bridges the spark gap. Not good!!

Oct 25, 2005 | 10:59 PM

#23

Chevy_Eater

Logistics Pro

Joined: Apr 2005

Posts: 4,221

Likes: 17

I have splitfires in one of my rigs, they work fine, just not any better than a normal plug. Not really worth the extra $$.
Chumpions haven't been any good since they went to copper core, and no, I don't even use them in my Mopars.