Okay simple question. Are there any out for the HR Engines?

Ive searched and searched and found none. I know the HR and DE Spark plugs are different so using plugs for the DE motor are out of the question.

I've heard there weren't any out yet, but then again, I found a thread saying that they are out?

Does anyone know for sure? If your not 100% sure if they're out or not, please dont bother posting, this is really confusing.

Thanks,
Jay

 

ok this is the only thing I found, it was taken from the thread "Shooting a HR"

"...are you doing the install yourself? NGK Iridiums- part # LFR6AIX-11 / NGK Coppers-part # LFR6A-11.
I saw an invoice from GTM where they did a TT on an HR motor and they used the above Iridiums"

Can anyone confirm if --> NGK Coppers-part # LFR6A-11 <-- will fit the HR motors?

 

let me know how that works, because I am in the same boat.

but on some research, I went to Denso's site. The stock plugs are a FXE22HR11. The "22" designates the heat range. According to their site linked below, a 22 is equal to a NGK 7, which is actually COLDER than an NGK 6 (the part numbers you have above are 6s). So unless I'm reading something wrong, the Denso plugs that come in the HRs are already pretty cold and shouldn't need to be changed.

http://www.globaldenso.com/en/produc...pec/index.html

 

A 7 is a 2 step colder plug

 

Well, it depends on what engine, some engines come with different heat ranges.

Tomorrow I will pull a plug out to make sure they are the same, if they are gapable, I will bump them all down some.

 

Ok so if Im understanding you correctly, your saying that the stock plugs that come in our engines (HR's) are 2 step colder iridium plugs, correct?

 

certain cars are designed for certain plugs, regardless of heat range, but yes, in the realm of things, the plug should be a colder plug, ill let you know later today if these are the ones that come in the motor

 

http://gtmotorsports.com/home.php?cat=416


SAM

 

..

If the car was made to run on particular set of plugs, it's ridiculously dumb to compare that to another car and say "that's colder so I don't have to change the plugs."

You should go with colder plugs than stock, not colder plugs than this version of this car from this maker.

 

Exactly, don't compare one platform to another, plug heat range is based on a whole bunch of factors that vary from engine to engine, so figure out what your stock is and drop one or two levels.

 

k the only ones I saw on that above link were for the 2 step colder plugs for the HR, are there any 1 step plugs?

 

What happened to your admin status? Everyone is becoming/not becoming mods.. it's getting crazy..

Okay back on topic.

 

BTW, why are yall looking for colder plugs? I thought that was for FI applications..

 

Nitrous

 

It would've helped if I looked what section this was posted, thanks...

 

What are you talking about?

 

Are a set of six 2 step colder plugs (NGK Iridium's) really 179$? >.>

 

My thoughts too, when I saw that price, I was like WOW!!!!

 

you must not have read all my responses, i understand that you dont base it off the plug, but on the car. Also, by going with an NGK 6 with the part numbers that were found, would be going HOTTER than the stock plugs.

 

Trust me I read it.

Here's the quote in question:
You stated that it's "already pretty cold." No, it's not. It's just right for THIS version of the Z. By what you're stating above, you're comparing it to the previous DE Zs, where the heat range was 5 (6 for 1 step colder). You can't compare the 5 in the DE to the 7 in the HR, as they're different cars. So, no, it's not "already pretty cold," it's just right for the HR Z. In other words, you're comparing apples to oranges.

You need to go colder from the stock HR's plugs (not stock plugs in the DE Z, but the HR Z).