I know that that is usually a sign of running very lean. However, I happen to know that I am NOT running lean at all, and if anything, its on the rich side(12.5:1 or so). Im using a non platinum NGK plug, same heat range as stock, with stock wires, so I dont understand why the plugs are so shot. They do have about 15K on them so maybe thats part of the problem, but I didnt think that was excessive. Maybe I should try a platinum plug? I forget the reasoning, but I was told to run a non platinum plug when my motor was built because I think they burn cooler, but dont last as long? Should I maybe try a cooler plug in the 7 heat range? Im gonna try to pick up a set of plugs tomorrow. Ill show you pics of the current ones Im running. They are so bad it almost looks like its flaking off near the tip.

 

I seem to remember that the time to check your plugs is immediatly after a WOT run. Shows the actuall conditions instead of cruising around and idleing conditions.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">I seem to remember that the time to check your plugs is immediatly after a WOT run. Shows the actuall conditions instead of cruising around and idleing conditions.</TD></TR></TABLE>

thats the same thing i have heard.

http://www.dansmc.com/Spark_Pl....html - for reference

 

How is the wear on them?
Post a pic

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">I seem to remember that the time to check your plugs is immediatly after a WOT run. Shows the actuall conditions instead of cruising around and idleing conditions.</TD></TR></TABLE>


This is correct. The car can run extremely lean at idle, and partial throttle - which is fine. But it will make the plugs look whiter than you might care for. But if they are WHITE white, I'd still be a little concerned..... Do you have a lean spot in your WOT maps? timing advanced a little too much? Post a pic!

 

nope, no lean spots at WOT. partial throttle and idle are anywhere from 13.5:1 and leaner, so maybe thats the cause. Ill post some pics when I actually figure out what plugs Im gonna go with. The plugs look like hell, but I made more power than ever 2 weekends ago on the dyno so Im not too concerned. But I will be changing the plugs anyway sometime today.

 

pre-detonations???

 

Well, to my surprise, it looks like I was running PKR6G platinum plugs. I think I ended up changing them out at one point after my motor was built to make sure I had fresh plugs for tuning purposes. Anyway, heres the pic of them below. They are pretty crappy looking.

I ended up going with NGK BKR6E-11 non platinum plugs because they didnt have the PFR6G in stock. I dont really like how these non platinums feel. The butt dyno tells me they are kinda sluggish, especially at low end where there is even a hint of a stumble/hesitation. When they get the platinums in Ill be putting those in again.

 

sorry to tell you but platnum plugs suck! running NGK V-Groves is better, if your obsessed with getting good plugs get some NGK IX Iridiums, worth the investment

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sideout &raquo;</TD></TR><TR><TD CLASS="quote">sorry to tell you but platnum plugs suck! running NGK V-Groves is better, if your obsessed with getting good plugs get some NGK IX Iridiums, worth the investment</TD></TR></TABLE>

Not sure how you can say they suck. You have any proof to back that up? They seemed to work pretty good and I made the most power with them in my car 2 weeks ago. Im looking into the Iridiums but there are 2 kinds and not sure if I really wanna switch from platinum since the non platinums I got today I do not like.

 

what brand gas you running? any additive?

 

Typically Sunoco 94 octane, or Mobil 1 93 octane. no additives. I ran race fuel once back in the day after the motor was built but I dont think that was on these plugs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by esponet &raquo;</TD></TR><TR><TD CLASS="quote">pre-detonations???</TD></TR></TABLE>

Pre-Detonation doesn't exist. I think you mean Pre-Ignition.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2 &raquo;</TD></TR><TR><TD CLASS="quote">

Not sure how you can say they suck. You have any proof to back that up? They seemed to work pretty good and I made the most power with them in my car 2 weeks ago. Im looking into the Iridiums but there are 2 kinds and not sure if I really wanna switch from platinum since the non platinums I got today I do not like. </TD></TR></TABLE>

Laser platinum (stock type) are pretty good. better than v-groove copper.
Iridium is about the same as laser platinum.

it all boils down to price:

BKR6E-11 = 2-3$
PFR6G-11 = 10-12$
BKR6EIX-11 = 6-8$

How much do you feel like spending?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sgT &raquo;</TD></TR><TR><TD CLASS="quote">

Laser platinum (stock type) are pretty good. better than v-groove copper.
Iridium is about the same as laser platinum.

it all boils down to price:

BKR6E-11 = 2-3$
PFR6G-11 = 10-12$
BKR6EIX-11 = 6-8$

How much do you feel like spending?</TD></TR></TABLE>

I spent $1.68 on the BKR6E today, so I figured I couldnt go wrong either way, especially since Trey said he was using them in another post. I figured Id give it a shot, but I dont like them. I got quoted $18/plug for the stock type plats You can get the Iridiums on GBC for $7/plug right now so I think Im gonna give those a shot.

 

http://www.sparkplugs.com

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Unsung EM1 &raquo;</TD></TR><TR><TD CLASS="quote">

Pre-Detonation doesn't exist. I think you mean Pre-Ignition.</TD></TR></TABLE>
yup i was thinking pre-ignition and detonation at the same time, my bad.

i don't think its detonating with the gas your using, seems like a hot combustion or additives (that the gastation or the refinery put in)causing it to wear like that. maybe try a step colder, or for the hell of it switch gas brand for a while then see what happens,but if you had a lot of hard milage then probly leave it if your car runs good, and just constatly check the plugs

 

thx

 

i just saw your other thread, diy plumbing, your filter is dirty *** hell, that could be dirt cookcking on the plugs. try cleaning and re-oiling your filter too.

 

Ill look into that, thanks

Im notorious for having a dirty R so sometimes I dont notice things like that haha