[jmderyke]

I have always changed my vehicles spark plugs over to copper core plugs and faced them in the combustion chamber with sometimes great results. The only plugs that I've found to out perform copper cores are silver core plugs but often do not have resistors in the plug so electrical interference is a problem.
Iridium plugs are only good if you hardly ever want to change your plugs, since they last a long time. Iridium creates a lot of resistance that must be over come. I'd rather spend that resistance on a wider gap like bullfrog is doing running .55 gap.

 

[jmderyke]

Has anyone side gapped their plugs in the 2.4?

 

[Darth_Strife]

im running the .55 gap. i called rrm because the car lost power at the track from what i ran stock. rrm told me to put the stock .47 gap back on the plugs because the stock ignition may not have enough spark to handle that wide a gap. call rrm and ask Boe for better explination. if i try to explian imma screw it up.

 

[grampete]

Compared to Iridium, how often are you guys changing the plugs?

 

[youngsmith53]

Compared to Iridium, how often are you guys changing the plugs?

Iridium's you wouldn't need to change the plugs ever (well, "practically" ever, more like the life of owning the vehicle)... as far as coppers I've seen and read the highest of 30k. So, more than likely would just be a good rule of thumb to get into the habit of checking them once a year or every-other oil change and you should be good.

 

[Bobcubs08]

Autolite 5325 Gapped to .55(point five five) 2.0 manual

A half inch gap is rather large.

 

[jmderyke]

Compared to Iridium, how often are you guys changing the plugs?

I check them at 7000, if your driving habits have been good they will last longer than that but if not prob time to replace them.

 

[jmderyke]

im running the .55 gap. i called rrm because the car lost power at the track from what i ran stock. rrm told me to put the stock .47 gap back on the plugs because the stock ignition may not have enough spark to handle that wide a gap. call rrm and ask Boe for better explination. if i try to explian imma screw it up.

Yeah I thought that was a little far to jump spark. 47 is a big gap anyway, that will do.

 

[Darth_Strife]

all plugs regapped to .o47. yay me.

 

[Darth_Strife]

coppers are every 25000-30000 miles depending on driving habits. i have 10000 miles left before i need to change them. oil change every 5ooo-7ooo miles.

 

[jmderyke]

coppers are every 25000-30000 miles depending on driving habits. i have 10000 miles left before i need to change them. oil change every 5ooo-7ooo miles.

Coppers 30,000.....? They would last that long, but would probably cost you more in fuel that the 11 dollars it would take to replace them. You could check them and regap them to stretch them out that far, as for me I wouldn't sleep at night. Lol I may have problems:wink:

 

[jammer41]

So where is everyone getting these plugs? Seems that no one carry them around me.

 

[Darth_Strife]

ok. sincey last post i have contacted several shops to help me test my theory. alas none have said they would assist in the tests. i jave went back and checked the gap for my stock plugs. they where .o44 to one as large as .o53. i then took my coppers back out of the box after running the stocker plugs again for a week. i regapped the coppers from my original .o53 back to .o47. and the car runs better again. but still no 1/4 mile results to nack this up as of yet.

 

[darttime]

I to gapped away on my plugs for years...the only difference I noticed was psychological honestly...wider is better tho cause you get a better arc...I also ran the goofy brands including the one with the split tip for "double" the power...factory is just fine...and hey if your tiger has less than 10 k on it then its gonna shake rattle and humm while it settles in..this is normal.

 

[Darth_Strife]

Coppers 30,000.....? They would last that long, but would probably cost you more in fuel that the 11 dollars it would take to replace them. You could check them and regap them to stretch them out that far, as for me I wouldn't sleep at night. Lol I may have problems:wink:

first off, why do you think they would make your gas mileage go down? a better burn and more efficient burn make the MPG's better. i have not seen a difference in mileage outside of getting around 36-39 hwy for me. how does regapping them stretch them out in terms of longevity? 30K is the max that you can use them and 25K is what im gonna change mine at sooo 40+ for the crappy iridium or 33 for the coppers? its your own prerogative on the situation. i chose coppers because im still testing them. as for DD they are great as long as you keep the gap at the stock .o47(which ill be testing again at the track.)

 

[Darth_Strife]

I to gapped away on my plugs for years...the only difference I noticed was psychological honestly...wider is better tho cause you get a better arc...I also ran the goofy brands including the one with the split tip for "double" the power...factory is just fine...and hey if your tiger has less than 10 k on it then its gonna shake rattle and humm while it settles in..this is normal.

how can the stock plugs be good when they are not even gapped to factory spec? they are just picked up from a bin and shoved into your car. thats not good either.
@jammer41 you have to order them from the parts place autolite copper 5325.

 

[lmcstockdart]

Just for reference my stock plugs on my 2.0 were gapped at .043. Replaced with the autolite 5325 capped at .045.

After doing the plugs It Seems my motor is running much better all through the rpm range but more so at the top. It's so much happier to be revved out up top and hangs revs a little less than before. No power gained but everything is way smoother and my motor is happy to be alive now.

 

[youngsmith53]

After doing the plugs It Seems my motor is running much better all through the rpm range but more so at the top. It's so much happier to be revved out up top and hangs revs a little less than before. No power gained but everything is way smoother and my motor is happy to be alive now.

Exactly what the copper plugs are designed to do, not increase power, but smooth out the power...

 

[SolNine]

Just in I got some MSD plugs that will work for our car, really well made iridium plug! Hope to put them in this week, my torque wrench is on the way.

 

[youngsmith53]

Just in I got some MSD plugs that will work for our car, really well made iridium plug! Hope to put them in this week, my torque wrench is on the way.

Which ones did you go with the 9IR5L or 9IR5Y from MSD?