nitrous spark plug question.

[jmpSHO2nd]

When I used NOS, I used cheapest plugs from Autozone which were 1-2 degrees cooler and forbid any platinum once. The more I used NOS, the sooner I had to change plugs. And I never had to take intake manifold off to change plugs. The hardest part was to change 2 plugs in the back of the engine(extra 10-15 min). COme on!!!!!!!!! Are you that lazy to spend 30-40 min to change your plugs? Or maybe screw around with the engine is easier?

I'm not lazy at all I asked a question if there is another plug out there that may last longer than a copper plug. On a good year I can put and easy 30k on my SHO and changing plugs 3-4 times a year isn't on my fun list.
Why does it bother you so much that I am looking for another plug??

 

[Art5]

I'm not lazy at all I asked a question if there is another plug out there that may last longer than a copper plug. On a good year I can put and easy 30k on my SHO and changing plugs 3-4 times a year isn't on my fun list.
Why does it bother you so much that I am looking for another plug??

I don't get one thing: Are you trying to not use nitrous of not to change plugs too often? It doesn't bother me that you're looking for plugs at all.

 

[jmpSHO2nd]

To clarify for everyone who reads this, I am installing nitrous in a high mileage 95 ATX SHO. I am not lazy and I have no problem using copper plugs and changing them out when I change my oil (every 6-10k). I am just wondering if there is another plug out there that may last longer than copper. Not sure why this question seems to bother people but it does.

 

[AREA 91]

To clarify for everyone who reads this, I am installing nitrous in a high mileage 95 ATX SHO. I am not lazy and I have no problem using copper plugs and changing them out when I change my oil (every 6-10k). I am just wondering if there is another plug out there that may last longer than copper. Not sure why this question seems to bother people but it does.

I don't know of any plug out there.
I recomend and use Autolite 3923.
Not to rub it in , but I have changed plugs between rounds at the drags.

Good Luck.

 

[Art5]

I don't know of any plug out there.
I recomend and use Autolite 3924.
Not to rub it in , but I have changed plugs between rounds at the drags.

Good Luck.

I agree, the most I got out of plugs when using Nitrous is up to 3 10lb bottles.
stronger plugs would give you maybe up to 1000 miles more or another bottle?

 

[93rev2sev]

Even if you found plugs that lasted 100K, you would still need to check the gap on them at regular intervals. Hence, the answer to your question is irrelevant due to the fact that you still need to pull them every 10k or less. Add the fact that brand new plugs will only cost $6 and it makes no sence to even look for longer lasting plugs, no matter the cost.

I would also recommend changing your oil at closer intervals. The increased cylinder pressure associated with nitrous use will cause additional blowby. Blowby causes oil contamination and a "high milage" engine already has increased blowby.

 

[jmpSHO2nd]

Now I'm getting some useful info. Thanks for all the replies.

 

[1slickRED89]

the only way to get higher mileage than a copper plug is to get a platinum/iridium enhanced electrodes. the Autolite XP3923, is a colder heat range, finewire double Pt plug and would easily handle a little nitrous and last 100K+.

for any significant increase in power i would go with the autolite racing plug though. because with any power adder you should be pulling the plugs anyway and looking at the tips and also checking compression etc etc.

 

[SHO Dude]

It seems to me that folks are missing the point.

The reason you want to run copper plugs with nitrous is so that the plug is the sacrificial component of combustion. If you don't do it right, you want the plug to fail first and not the exhaust valves.

Before I got the system ironed out, I went thru several exhaust valves and a couple of boxes of plugs. I would also pull the plugs every round to check them. Takes about 8min, even right after a pass.

After I got the system ironed out, I went 2 full seasons on one set of copper plugs (300-400lbs of nitrous). My best time to date was 13.07 at 107mph and a 2.10 60'. That's leaving on the clutch at 4500rpm. Once the clutch was hooked up I could pat the bottle twice, the shift into 2nd and run the bottle all the way out the back door (lifting into 3rd, then power shift into 4th).

 

[RStalveyARFF]

I ran denso iridiums with my nitrous setup. In there 15k plus before I took out my motor in a totally non related, non nitrous incident. Still looked new when they were pulled.

 

[Not4speed]

Ive always had good results with NGK TR55's when running juice on vehicles. Its my plug of choice. I didn't know that Zex made spark plaugs now. I'll have to check them out. Anyone know off the top of their head the main difference? Surely it can't be any different than any other copper plug on the market except that you pay for the ZEX name.

 

[jmpSHO2nd]

Ive always had good results with NGK TR55's when running juice on vehicles. Its my plug of choice. I didn't know that Zex made spark plaugs now. I'll have to check them out. Anyone know off the top of their head the main difference? Surely it can't be any different than any other copper plug on the market except that you pay for the ZEX name.

I am still looking into the Zex plug I am just not 100% sure on it yet. They don't have a specific plug for our motor but some of the cars there plugs are for share the same plug as a Gen 2 SHO. There plugs are specifically for nitrous applications so I can't see it not working properly.

 

[SHOspazz92]

the only way to get higher mileage than a copper plug is to get a platinum/iridium enhanced electrodes. the Autolite XP3923, is a colder heat range, finewire double Pt plug and would easily handle a little nitrous and last 100K+.

for any significant increase in power i would go with the autolite racing plug though. because with any power adder you should be pulling the plugs anyway and looking at the tips and also checking compression etc etc.

Do not run a platinum plug with boost or Nitrous. I know with just a little Nitrous it might not be dangerous but I would not risk it.

-Sam

 

[1slickRED89]

Do not run a platinum plug with boost or Nitrous. I know with just a little Nitrous it might not be dangerous but I would not risk it.

All Ford boosted engines that i'm aware of use Finewire platinum spark plugs from the factory, the GT500 and the Ecoboost 3.5L. if your advise with boosted engine was valid they would not do this.

But I agree on the nitrous part of it, no real reason to use finewire plugs. the main purpose of a finewire platinm electrode is to reduce the voltage it takes to spark, and i'm not aware that nitrous adds any special requirement for lowering the voltages like a boosted engine would. but on the other hand as far as I know there is no real reason not to use them either, so long as the heat range is right.

if the finewire plug is used with the incorrect heat range it will preignite and melt valves, tulip valves, melt piston ring lands and burn off various parts of the spark plug. but again, thats not due to the fact it has electrode enhancements, but that the heat range is too hot.

I've listend to alot of half-baked spark plug application logic and the only time I've ever seen data that platinum is bad, is when its used with methanol fuel, or metanol mix fuel. platinum and methanol apparently don't mix, so i'm told.