I saw them listed at Checkers around 3 bucks each...any comments?
Any Autolite 3293 users try the "Double Platnum" yet?
waka
1 - 20 of 21 Posts
Re: Any Autolite 3293 users try the "Double Platnum" yet? (waka)
Haven't tried them, but in theory platinum and multiple grounds are not good for a forced induction car. Reason being that platinum doesn't conduct as will as copper, and multiple grounds split the spark (meaning 2 weaker sparks). Under boost, there is more resistance to arcing, so you're more likely to get misfires, put a greater load on the coilpacks, and not get as good a "boom" in the cylinder.
Haven't tried them, but in theory platinum and multiple grounds are not good for a forced induction car. Reason being that platinum doesn't conduct as will as copper, and multiple grounds split the spark (meaning 2 weaker sparks). Under boost, there is more resistance to arcing, so you're more likely to get misfires, put a greater load on the coilpacks, and not get as good a "boom" in the cylinder.
Re: Any Autolite 3293 users try the "Double Platnum" yet? (jamesb)
quote:[HR][/HR]Alternativly, plats handle heat better so they last longer. Its a weird tradeoff.[HR][/HR]
i would rather have the correct spark then longer plug life. http://****************.com/smile/emthup.gifRe: Any Autolite 3293 users try the "Double Platnum" yet? (dbrowne1)
![Image]()
quote:[HR][/HR]multiple grounds split the spark (meaning 2 weaker sparks).[HR][/HR]
I don't think you will actually get two sparks. Electricity likes to take the path of least resistance so, it will tend to arc only on the shortest path, all other things being equal. So, if you have 2 or 3 or 4 electrodes, the supposed advantage is as the tips wear down and the gap gets bigger, the spark will move to a different electrode to keep the gap smaller for longer. Even Splitfire's own propoganda only shows one spark happening at a time:
Re: Any Autolite 3293 users try the "Double Platnum" yet? (wob337)
But you're right. None of this matters unless you're competing and need that extra 1-2hp.
quote:[HR][/HR]It's just a spark, I don't get it when people go out and buy these super platinum plugs for no reason?[HR][/HR]
It's more complicated than that. Ideally you want a single ground copper plug (least resistance, single powerful spark, less shielding of the spark by extra electrodes) that is gapped JUST close enough to prevent misfire. That way the largest possible spark and exposure area is created. Then you want to index it so the ground electrode is opposite the intake valves, so that the fuel/air flys right into it.But you're right. None of this matters unless you're competing and need that extra 1-2hp.
Re: Any Autolite 3293 users try the "Double Platnum" yet? (Andy@Ross-Tech.com)
quote:[HR][/HR]multiple grounds split the spark (meaning 2 weaker sparks).
I don't think you will actually get two sparks. Electricity likes to take the path of least resistance so, it will tend to arc only on the shortest path, all other things being equal. [HR][/HR]
You're probably right, although eventually those paths will equal out as the spark path shifts around, and you may get multiple sparks. Multiple ground electrodes also shield the spark more from the FA mixture.I don't think you will actually get two sparks. Electricity likes to take the path of least resistance so, it will tend to arc only on the shortest path, all other things being equal. [HR][/HR]
Re: Any Autolite 3293 users try the "Double Platnum" yet? (dbrowne1)
dbrowne1, thanks for the reply. I remember all those past autolite posts of yours http://****************.com/smile/emthup.gif
I guess plats are more for durability then.
Andy, thanks for the great info http://****************.com/smile/emthup.gif
Edit: spelling
[Modified by waka, 10:10 PM 7-11-2002]
dbrowne1, thanks for the reply. I remember all those past autolite posts of yours http://****************.com/smile/emthup.gif
I guess plats are more for durability then.
Andy, thanks for the great info http://****************.com/smile/emthup.gif
Edit: spelling
[Modified by waka, 10:10 PM 7-11-2002]
Re: Any Autolite 3293 users try the "Double Platnum" yet? (dbrowne1)
Sorry to bump this right from the graveyard, but I was doing some reading on spark plugs and came upon this comment...
Anyone care to explain how I'd go about doing this? I'm changing plugs this weekend and I don't mind spending the extra minutes to index them to the valves, but I have no idea how to make sure they end up in the correct orientation. Anyone have a trick they could share?
![Image]()
Sorry to bump this right from the graveyard, but I was doing some reading on spark plugs and came upon this comment...
| Quote, originally posted by dbrowne1 » |
| ... Then you want to index it so the ground electrode is opposite the intake valves, so that the fuel/air flys right into it. |
Anyone care to explain how I'd go about doing this? I'm changing plugs this weekend and I don't mind spending the extra minutes to index them to the valves, but I have no idea how to make sure they end up in the correct orientation. Anyone have a trick they could share?
... okay, and then put it in all the way and see if it lines up. If it doens't I guess just back it out and start it again with 1/2 turn clocked in.. trial and error until it lines up. Cool, thanks for the idea. http://****************.com/smile/emthup.gif
Joined
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905 Posts
Re: (fsds1234)
No.
If you are indexing the plugs there are different thickness washers that you use until you get the plug just right. To torque to the specifics doesn't line the electrode up
| Quote, originally posted by fsds1234 » |
| But if you tighten it to a certain torque setting, won't the tip allways face the same way? |
No.
If you are indexing the plugs there are different thickness washers that you use until you get the plug just right. To torque to the specifics doesn't line the electrode up
Re: (-Pascal)
Use indexing washers. They sell them.
I went to a moto shop. They didn't know what they were, but I picked up crush washers for a suzuki/kawasaki oil drain plug. This washer is the same exact one that come with spark plugs. Instead of crushing down a 1/4 turn, it will crush 1/2 turn with a second washer. Mark the plug as chris said. I use a marker. Then, test one plug into each cylinder and find which plug indexes best. Then, if need to use a another crush washer and index.
It might be a more ghetto way to index plugs, But I have found no ill affects doing it this way. I indexed the autolites, and they felt just as good as my denso ik22s. Now I just index a set of denso ik22, I will report back with more info.
If anyone else has a better way to index plugs, please let me know. http://****************.com/smile/emthup.gif
| Quote, originally posted by -Pascal » |
| ... okay, and then put it in all the way and see if it lines up. If it doens't I guess just back it out and start it again with 1/2 turn clocked in.. trial and error until it lines up. Cool, thanks for the idea. http://****************.com/smile/emthup.gif |
Use indexing washers. They sell them.
I went to a moto shop. They didn't know what they were, but I picked up crush washers for a suzuki/kawasaki oil drain plug. This washer is the same exact one that come with spark plugs. Instead of crushing down a 1/4 turn, it will crush 1/2 turn with a second washer. Mark the plug as chris said. I use a marker. Then, test one plug into each cylinder and find which plug indexes best. Then, if need to use a another crush washer and index.
It might be a more ghetto way to index plugs, But I have found no ill affects doing it this way. I indexed the autolites, and they felt just as good as my denso ik22s. Now I just index a set of denso ik22, I will report back with more info.
If anyone else has a better way to index plugs, please let me know. http://****************.com/smile/emthup.gif
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