please read my plugs
Drifting
Joined: Dec 2003
Posts: 1,755
Likes: 88
From: Pearland Texas
Nothing to read on those plugs bud. To read a plug you need to install a new plug and make a pull, then pull it and inspect it. Those are plugs you were just driving around on. Doesn't really tell you anything useful other than they weren't burnt or cracked porcelain.
Thread Starter
Drifting
Joined: Nov 2014
Posts: 1,980
Likes: 111
From: Switzerland
well, i was surprised when i saw them. i have never seen a completely clean and white porcelain on a plug before. it has seen anything from 10.8 to 11.8 in mixture. im still tweaking the tune. on the pass i did before pulling them i saw 11.3 @ 5000 rpm and after they went back in i saw 11.2 @ 6000 rpm. also i have never seen a "tiger pattern" on an electode like this. where does that come from?
im using shell 100 octane (ron) gas. on their site they mention additives that lube the rings and clean the engine. did they clean the plugs to like new colour?
the particles/debris in the picture must come from the chamber. i pulled them carefully and the threads were clean. so i wonder if thats due to the cleaning action and what it does to the engine, which btw runs just fine. (everything stock, novi 1500.)
im using shell 100 octane (ron) gas. on their site they mention additives that lube the rings and clean the engine. did they clean the plugs to like new colour?
the particles/debris in the picture must come from the chamber. i pulled them carefully and the threads were clean. so i wonder if thats due to the cleaning action and what it does to the engine, which btw runs just fine. (everything stock, novi 1500.)
Last edited by romandian; Nov 2, 2016 at 01:32 AM.
Drifting
Joined: Dec 2003
Posts: 1,755
Likes: 88
From: Pearland Texas
Yeah anything that looks like that is just additives or carbon. The Ring your looking for on the porcelain isn't always visible. I was surprised how clean parts of it was and figured it wasn't regular 93 pump gas like you mentioned earlier or you had some kind of additives in it. Again though, none of that means anything when talking about the tune up. it will have multiple timing marks and no dedicated fuel ring on the porcelain, and the color will not be accurate because of the different AFR's and idle conditions etc... All you can say with those is that they don't look bad lol!
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
Nothing to read on those plugs bud. To read a plug you need to install a new plug and make a pull, then pull it and inspect it. Those are plugs you were just driving around on. Doesn't really tell you anything useful other than they weren't burnt or cracked porcelain.
Only true way to read a plug.. Man the white in the porcelain is really white.
Last edited by robert miller; Dec 5, 2016 at 03:49 PM.
Thread Starter
Drifting
Joined: Nov 2014
Posts: 1,980
Likes: 111
From: Switzerland
i talked to a shell tech and he said thats exactly what v-power would do, clean the plugs. its supposedly the same stuff they use in formula 1.
Last edited by romandian; Dec 5, 2016 at 01:44 PM.
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Joined: Apr 2012
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From: Forney TX
The porcelain is white because you're running a projected-tip plug that's too hot for your setup. I recommend switching to a non projected BR7EF NGK part# 3346. Gap them a little tighter at or around .030". Like others already mentioned, it's best to install the plug, start the car, make an immediate pull, shut it down and pull over to the side of the road and put a different plug back in the hole and take the plug home to read it. If you're running methanol, it'll also clean the plugs and remove the fuel ring, forcing you to learn a different way of reading plugs.
Reading your plug based on all the information you've provided and considering it's too hot of a plug, I would back the timing down, lean the car out some and then slowly bring the timing back. As you lean it out, the max timing should be lower than it was when it was richer. I've run even high boosted cars as lean as 12.5:1 because that's what the plug reflected should be done and the car responded by going faster than it had ever gone before.
Bret
Reading your plug based on all the information you've provided and considering it's too hot of a plug, I would back the timing down, lean the car out some and then slowly bring the timing back. As you lean it out, the max timing should be lower than it was when it was richer. I've run even high boosted cars as lean as 12.5:1 because that's what the plug reflected should be done and the car responded by going faster than it had ever gone before.
Bret
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Thread Starter
Drifting
Joined: Nov 2014
Posts: 1,980
Likes: 111
From: Switzerland
for comparison: old ngk ptr5c-13 (0.050") and new (colder) ngk tr6 (came with 0.040" gap, now 0.035"), same tune:
foto upload
the "old" plugs came with the car as i bought it and have seen some v-power and boost, but not much. engine runs very well, btw.
foto uploadthe "old" plugs came with the car as i bought it and have seen some v-power and boost, but not much. engine runs very well, btw.
Last edited by romandian; Dec 6, 2016 at 04:22 AM.
Supporting Vendor
Joined: Apr 2012
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From: Forney TX
for comparison: old ngk ptr5c-13 (0.050") and new (colder) ngk tr6 (came with 0.040" gap, now 0.035"), same tune:
foto upload
the "old" plugs came with the car as i bought it and have seen some v-power and boost, but not much. engine runs very well, btw.
foto uploadthe "old" plugs came with the car as i bought it and have seen some v-power and boost, but not much. engine runs very well, btw.
The oil or heavy soot on the base of the plug that isn't getting burned off
Run whatever you choose, but I recommend at least a NGK 3346 or equivalent non-projected #7 with 14mm thread, tapered seat and .708 reach.
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From: Forney TX
Drifting
Joined: Apr 2008
Posts: 1,687
Likes: 86
From: De Pere, WI
I would say the plug is waay too hot for that set up. Looks like the ground strap blistered from the heat. Like BlownBlue said, I would go to a BR7EF and make a pull and check them again. You could also cut the threads off so you can get a really good look at the fuel ring.
Drifting
Joined: Apr 2008
Posts: 1,687
Likes: 86
From: De Pere, WI
Thread Starter
Drifting
Joined: Nov 2014
Posts: 1,980
Likes: 111
From: Switzerland
yes, clean all the way as the rep said it would be. (thats what i was trying to show in the pics.)
oh, and would i have to run more timing with the br7fe plugs, as they have a shorter reach?
oh, and would i have to run more timing with the br7fe plugs, as they have a shorter reach?
Drifting
Joined: Apr 2008
Posts: 1,687
Likes: 86
From: De Pere, WI
Having a shorter reach isn't so much a timing issue, it is more to prevent the spark from getting blown out.
I would ditch those TR6s. Even with a 500+ whp NA car I didn't need TR6s. TR55 copper was spot on.
Also, Iridium plugs are horrible for performance. Iridium isn't nearly as conductive as copper. The reason OEMs use Iridium is because it is so hard it last a long *** time.
I would ditch those TR6s. Even with a 500+ whp NA car I didn't need TR6s. TR55 copper was spot on.
Also, Iridium plugs are horrible for performance. Iridium isn't nearly as conductive as copper. The reason OEMs use Iridium is because it is so hard it last a long *** time.