new spark plugs

[doom26464]

ok SO i need new spark plugs. After my car gets its hg fixed I need a new set of these. So what shoudl I get. MY car currently has NGK irduims in them wich I hear are pretty damn good. I have looked at websites like Suprasport and MVPmotorsport as well. help point me in the right direction guys. I want a good plug at a good price. Also I don't have a gapping tool so I need some that come pre gapped(though I hear irduims already come pre gapped as they can not be gapped). Any info would be great guys!

 

[PunaMKlll]

you get what you pay for, ngk v-power perform just as well and cost much cheaper than irduims, but do not perfom for as long as irdiums will. ive used v-power for a whyle now and prefer them over irdiums as far as what you get for your money.

 

[abustiffy]

Ive had great luck with the tried and true ngk copper bcpr6es. A gapping tool is like a buck and at the counter of the autoparts store, get one. I believe stock ap spec is .32" IIRC. I gapped mine at .30 running 16psi with no issues.

 

[shaeff]

1) NEVER trust 'pre-gapped' spark plugs. a gapping tool/feeler gauge is like $2 at the local auto store. just get one!

2) autolite 3923. they're damn cheap (like $2.80 for a two pack) and work very well. (these spark plugs are where the saying "you get what you pay for" does NOT apply)

-shaeff

 

[doom26464]

hahah wow im soo confused seems like everyone one has there different opion on everything.

 

[abustiffy]

Yes, that is how it works in the real world. You have to research and make a decision based on your needs. If everyone liked the same stuff, this board probably wouldn exist.

 

[MKIIINA]

i currently have the autolite coppers and they are just ok. i loved my ngk irids and plan on going back to ngk coppers now. 18psi on sp61gt

 

[mrnickleye]

I run Autolite Platinums, $5.96 full retail. You can get them cheaper. I ran non-platinums for a while, no problems, but platinums will last 3x longer. So you don't have to do the change-out as often. Iridiums are too $$$ for the spark.

We only use Autolite at the shop, as we have seen different types of problems with other brands. We NEVER use Bosch, seen too many problems over the years.

Also...if you use an MSD ignition box, do NOT use regular plugs, as the multiple sparks will wear them out in a hurry.

And...do NOT pull out the plugs when the engine is hot (warm is ok), as the threads in the head may want to come out too. Put a squirt of lube spray on the new plugs threads first.

When I was moto-crossing (Yamaha & Hondas) I tried all kinds of plugs. A 2-stroke MX bike will really let you know if a plug is any good. I ended up running Nippon- Denso's with the 'fireball groove' in the ground electrode because they did NOT foul out.

PS. 2-strokes have oil mixed with the gas, so they might foul out in the most inconvient times.

 

[IJ.]

Lots of posts over at MSD about not using Platinum's with their multispark ignitions!

I'm using Irridiums with my MSD Dis4's and so far no signs of it missing or breaking down but I have to wait until it's tuned before I can boost so maybe the "issue" will show up then.

 

[doom26464]

Ok I have made up my mind to go with NGK Irdiums. I was looking at supra sports website and saw them on there but also they have it listed funny

http://www.suprasport.com/product.asp?itemid=90

They have 2 different irdiums listed
BCPR6EIX 5689
BCPR5EIX11 3306

Wich one do I get>???????



Also can u gap irdiums?? and how do u gap a spark plug??? is it easy can a noob like me do it???

 

[tlo86]

http://www.sparkplugs.com/faqmain.asp

this will help

 

[IJ.]

From TLO's link>>

Should I gap my Iridium Plugs?

The manufacturers say NO.
This is because most people do not know how to properly gap a spark plug, and the center electrodes on the ultra-fine iridium can easily snap if mishandled. There is no warranty for snapped center electrodes. The manufacturers say an iridium spark plug will run so much better than a traditional plug, even if it is not gapped for that motor, that they would prefer you just leave it rather than risk snapping the center electrode.
Personally, we at sparkplugs.com, gap our iridium plugs for our own vehicles (we’re rebels). If you insist on gapping your iridium plug, please refer to Proper Gapping for instruction


I did mine when I got em and as long as you don't touch the centre electrode they're fine!

 

[doom26464]

From TLO's link>>

Should I gap my Iridium Plugs?

The manufacturers say NO.
This is because most people do not know how to properly gap a spark plug, and the center electrodes on the ultra-fine iridium can easily snap if mishandled. There is no warranty for snapped center electrodes. The manufacturers say an iridium spark plug will run so much better than a traditional plug, even if it is not gapped for that motor, that they would prefer you just leave it rather than risk snapping the center electrode.
Personally, we at sparkplugs.com, gap our iridium plugs for our own vehicles (we’re rebels). If you insist on gapping your iridium plug, please refer to Proper Gapping for instruction


I did mine when I got em and as long as you don't touch the centre electrode they're fine!

I wonder though do they come pre gapped though????

 

[IJ.]

Yep they do but it's something like 32 thou from memory.

 

[doom26464]

ok but i still don't know wich one to order from suprasport though.

 

[jt2ma71]

You posted two plugs you saw on suprasport. One at stock heat range and one hotter. Are you running higher boost than stock? Then it is best to run the BCPR7EIX, I think that's not one of the two you're choosing from. But if you want one of the two get the BCPR6EIX(stock heat range) The BCPR5EIX11 is a hotter plug than stock. Ron

 

[doom26464]

You posted two plugs you saw on suprasport. One at stock heat range and one hotter. Are you running higher boost than stock? Then it is best to run the BCPR7EIX, I think that's not one of the two you're choosing from. But if you want one of the two get the BCPR6EIX(stock heat range) The BCPR5EIX11 is a hotter plug than stock. Ron

Actually i found the same one in town at napa for like 12 buxs Canadian a plug. So im just going to buy some from there. Hope this Irudiums are worth the $$$. Think this could end my missing at high boost problem???

 

[mrnickleye]

Lots of posts over at MSD about not using Platinum's with their multispark ignitions!

I'm using Irridiums with my MSD Dis4's and so far no signs of it missing or breaking down but I have to wait until it's tuned before I can boost so maybe the "issue" will show up then.

We recommend that you try and stay away from any platinum, iridium, or "trick" plugs. These tend to run too hot with CD ignitions like the MSD and can prematurely fail. Bosch plugs are fine, just use a copper type that is a heat range or two colder than stock.

--------------------
MSD Tech Support
915-855-7123

 

[doom26464]

We recommend that you try and stay away from any platinum, iridium, or "trick" plugs. These tend to run too hot with CD ignitions like the MSD and can prematurely fail. Bosch plugs are fine, just use a copper type that is a heat range or two colder than stock.

--------------------
MSD Tech Support
915-855-7123

Im not using any sorta of CD igntions like msd or nothing pretty much all stock as far as I can c.

 

[Dirgle]

I've hear that copper is the best material for a sparkplug in a turbo charged engine. I've heard it has something to do with the way the copper dissipates the additional heat in boosted applications. Can anybody confirm or deny this and perhaps elaborate a little more on the subject.