Spark Plugs ???
Thread Starter
Le Mans Master
Joined: Apr 2000
Posts: 5,981
Likes: 0
From: Houston,Tx. USA
Spark Plugs ???
Whose run their plugs for more than 60K? I'm thinking it's past time to change them (seemingly harder starts, runs OK, maybe slightly ruff idle).
What intervals are any of you using?
What intervals are any of you using?
Racer
Joined: Apr 2002
Posts: 354
Likes: 0
From: Red Oak TX
Re: Spark Plugs ??? (Chopper Larry)
Whose run their plugs for more than 60K? I'm thinking it's past time to change them (seemingly harder starts, runs OK, maybe slightly ruff idle).
What intervals are any of you using?
What intervals are any of you using?
Every 15,000 for me, and I use NGK copper.
Burning Brakes
Joined: Aug 2000
Posts: 1,132
Likes: 1
From: Morganton, NC, USA
Re: Spark Plugs ??? (RoliO)
I changed out my original AC's after 15 K of fairly mild driving with only a couple trips to the redline or over 5k rpm's. The pucks were missing from all 8 and the gaps from the tip of the center electrode to the ground piece were around .065". However, there appears to be a small crater from spark erosion, increasing the true gap slightly. The tips of the center electrodes appear to be necked down to .040" diameter, but I don't have a new AC to compare with. So ends the myth of the 100 k platinum spark plug! :bs
Advanced
Joined: Apr 2002
Posts: 85
Likes: 0
From: kansas city
Re: Spark Plugs ??? (Fang S-289)
I changed to NGK TR55 plugs at approx 15,000miles and pity anyone that has to change the plugs after putting on lots of miles on the stock plugs.
Although you are instructed to use anti-seize on the plug threads when making a change, evidently none is used at the BG assembly plant.
Fortunately, none of the pucks were missing when I pulled the original plugs.
In my area, the NGK plugs were available at O'Reilly Automotive.
Although you are instructed to use anti-seize on the plug threads when making a change, evidently none is used at the BG assembly plant.
Fortunately, none of the pucks were missing when I pulled the original plugs.
In my area, the NGK plugs were available at O'Reilly Automotive.
Team Owner
Joined: Jun 2001
Posts: 100,672
Likes: 2
From: Cleveland OH
Re: Spark Plugs ??? (Fang S-289)
I would like to use the NGK Tr55s, but can't find anyone around here who sells them! Where can I get them?? Thanks. :rolleyes:
Try NAPA. I got mine there :D
Try NAPA. I got mine there :D
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Intermediate
Joined: Apr 2002
Posts: 48
Likes: 0
From: Ktown IN
Re: Spark Plugs ??? (KC98C5)
I just changed to Beru S1K as part of BBP Stage II package. My 99 has 14K on the odometer. Stock plugs looked like I am pretty lean and gap was all over the place, 060 to 085 with pretty siginificant wear on the electrode. I will watch the Berus to see if I experience the same wear as the stock. My advice to anyone with stock plugs is to pull em and pitch em, or at very least pull em and check the gap.
Safety Car
Joined: Oct 2000
Posts: 4,949
Likes: 10
From: Monticello MN
Re: Spark Plugs ??? (2kbluestreak)
I changed out my original AC's after 15 K of fairly mild driving with only a couple trips to the redline or over 5k rpm's. The pucks were missing from all 8 and the gaps from the tip of the center electrode to the ground piece were around .065".
Ed
[Modified by C5XTASY, 8:23 AM 6/7/2002]
Burning Brakes
Joined: Aug 2000
Posts: 1,132
Likes: 1
From: Morganton, NC, USA
Re: Spark Plugs ??? (C5XTASY)
C5XTACY: The porcelin is marked "AC 41-952" and "12567455", so I assume they were manufactured by AC. (I've also heard that the AC oil filters are supplied by vendors to AC specs.) On one of the hex flats is stamped "096021", but don't know what this means. The area under the positive electrode on the ground electrode seems to have a faint circle approximately .062" in diameter where the puck should have been. If you look in the Tech Tips section on how to change plugs and wires, the very last photo shows the NGK TR55 side by side witht the AC 41-952. A small puck is clearly visible on the ground electrode. This is why I think all the pucks were missing, but things could have changed. Others had previously posted missing a couple pucks out of a set, so by implication, some plugs must have had visible pucks. Hope this helps. :cheers:
