Any and all advice is greatly appreciated

 

Stock NGK's or some Denso Platnums.

 

I run the OEM S2000 plugs. They are made by NGK and are a 7 heat range as opposed to a 6. They are also the stock plugs found in the JDM ITR motors.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98 Spec R &raquo;</TD></TR><TR><TD CLASS="quote">I run the OEM S2000 plugs. They are made by NGK and are a 7 heat range as opposed to a 6. They are also the stock plugs found in the JDM ITR motors. </TD></TR></TABLE>

Do these plugs have the same gap spec as for the R? Why do you think it's beneficial to run colder plugs (I'm assuming this is a street driven car)?

 

&lt;-- OEM NGK's.

 

The NGKs are WAYYYYYYY cheaper than the Denso Irid.
(I paid around 60 for the densos, about 8 for the NGKs.)
So you could change the NGKs 7 times for what the Iridium costs.
On my stock ITR I could not really tell a difference between them.
I returned the Densos
NGK all the way...

 

Stock NGK plugs...
Part #: NGK PFR6G-11

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TPB &raquo;</TD></TR><TR><TD CLASS="quote">Do these plugs have the same gap spec as for the R? Why do you think it's beneficial to run colder plugs (I'm assuming this is a street driven car)?</TD></TR></TABLE>

I made sure the gap was within spec, I dont think I had to change the gap but, I dont remember, its been a few months.
I have had 3 other JDM ITR motors in the past, one RHD JDM ITR and 2 in Civic hatchbacks, these were the stock plugs for those JDM ITR motors, part # NGK PFR7G-11. I believe this is due to the higher compression on the JDM motors.
I never said I thought that the colder plugs were beneficial. I used these plugs on my USDM ITR because I had them sitting around, new on my shelf, and didnt want to go spend more money on platnium plugs that were just one heat range colder. Also, I live in AZ and in the summer my IAT temps can go well over 130 F due to the ambient air being 110-120 F so I figured the colder plugs can't hurt. The car runs like a raped ape in the summer and winter so I dont see a point in changing them to the PFR6G-11 until I need new plugs.

 

Lots of turbo cars use the BKR7E (7 heat range) to avoid hotspots/detonation. They're cheap, you can replace them at oil changes if you like. I moved up to the 8 heat range racing NGK's.


-Chris

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98 Spec R &raquo;</TD></TR><TR><TD CLASS="quote">

The car runs like a raped ape in the summer and winter </TD></TR></TABLE>

Pure gold! Thanks for the vision that conjures up (and the laugh)

 

I run NGK's (7 heat range)

 

Denso IK22's here (heat range 7) and no problems summer or winter.

 

Thank you for the advice it is greatly appreciated