Spark Plugs poll - Honda Prelude Forum

Andy93si · 01-21-2002, 06:05 PM

Which plug do you use and why? I have tried:

NGK: zfr6f-11
Denso: kj2ocr-l11

I prefer the NGK, it seems to really help my bottom end tourqe. Just wanted some other opinons, and maybe some new ones to try. Thanks, -Andy

'92PreludeSi · 01-21-2002, 08:11 PM

try the NGK ZRF7F-11s in your car. just make sure to check them once in a while.

grlielude · 01-22-2002, 07:41 AM

In just about every Honda you should use NGK's unless its an NSX and then you can shop around

H23Lude · 01-22-2002, 08:06 AM

yep i just use NGK.

Dr. James · 01-22-2002, 04:51 PM

Forget the NGK Platinums, unless you just don'y like working on your car, or getting dirty every once in awhile. Go with the NGK ZFR7F11. These are the plugs from an SI model. They are copper plugs and cost about 1.25 each. So there is a huge cost savings over the platinums, and they perform just as well.

U.K VTEC · 01-22-2002, 05:04 PM

I've got HKS Iridium plugs. I needed new ones and that was all the dyno shop had in stock.
They last for 60k miles though

'92PreludeSi · 01-22-2002, 08:11 PM

Quote:

Originally posted by Dr. James
Go with the NGK ZFR7F11. These are the plugs from an SI model.

actually...the ZFR6F-11s are stock in the Si models. they are the same heat range as the VTEC models...with the exception of being platinum. I'm not sure what exactly uses the ZFR7F-11s stock. maybe the NSX?

brendon2k · 01-23-2002, 02:44 PM

I didn't think spark spluge really gave you any more power unless the previous ones where old.

BryanS · 01-23-2002, 11:18 PM

what difference will it make if you go up or down a heat range from the stock range? My car has just an intake and exhaust... will these simple mods affect the range I should use?

JDM Lude · 01-23-2002, 11:26 PM

stick with the stock heat range unless you go FI, then go one or two levels cooler

ludeact · 01-23-2002, 11:38 PM

I am using the Denso Iridium plugs now but when I replace them I'll probably go back to NGK. But then I will most likely run a cooler plug as I will be going to the dark side. hehe...

Mike95lude · 01-24-2002, 12:19 AM

What are the benefits of using a "colder" plug? Does it reduce detonation or something? And are there benefits to just running maybe one step colder on a semi-modified NA setup?

redlude94vtec · 01-24-2002, 08:03 AM

Quote:

Originally posted by Dr. James
Forget the NGK Platinums, unless you just don'y like working on your car, or getting dirty every once in awhile. Go with the NGK ZFR7F11. These are the plugs from an SI model. They are copper plugs and cost about 1.25 each. So there is a huge cost savings over the platinums, and they perform just as well.

Platinum plugs last 5 times longer. Vtec models needs to be changed once/100.000 km. Other once/20.000 km.

ludeact · 01-24-2002, 10:43 AM

Quote:

Originally posted by redlude94vtec

Platinum plugs last 5 times longer. Vtec models needs to be changed once/100.000 km. Other once/20.000 km.

Yes, but is this under normal driving conditions? For those that like to push their motor a lil' more often. It doesn't hurt to change the plugs more often.

redlude94vtec · 01-24-2002, 12:39 PM

Quote:

Originally posted by ludeact

Yes, but is this under normal driving conditions? For those that like to push their motor a lil' more often. It doesn't hurt to change the plugs more often.

No it doen't hurt to change it more often. But to say that the only difference between the copper and platinum ones is only the price, should be reconsidered. I agree copper ones gives a better spark when both new, but copper is also more sensitive to corrosion, and that's why you should change them more often. Both should be changed more often when you're not driving under normal conditions.