View Full Version : PLUGS for a rb20DET ????
03-06-02, 12:20 PM
What is a good plug for a RB20DET
Price V Preformance, any help is good help
03-06-02, 01:02 PM
The NGK PFR-5A-11 1.1mm Gap Platinum @ $17.95ea are what mine came with standard. If you have wound up the boost go for a 0.8mm gap such as those below:
NGK BCPR6ES 0.8mm Gap Copper $3.00ea (Currently using these with no problems)
NGK BCPR7ES 0.8mm Gap Copper $3.50ea
The 6 heat range Platinums will also work:
NGK PFR-6A-11 1.1mm Gap Platinum $17.95ea
Bosch Platinum 4's #4417 @ close to 24.95ea are meant to be good but I have not tried these yet.
03-06-02, 02:41 PM
OI i heard that if your engine in running rich that it shouldn’t make a difference using a cheaper plug, is this true....?????
platinums are the recomended plug for RB20s because of the additional hassle of servicing them, and because they are under reasonable load. The fact that they really should last as least 5 times as long as a copper plug should encourage youto use them anyway.
Many people who run leaded fuels (like avgas) need to sub out platinum plugs for copper because the platinum ones foul.
Platinums will (should) foul less than copper plugs when running rich.
03-06-02, 04:00 PM
What kind of plugs for a rb25det huh? :) I have some pretty HKS plugs that came with the engine, but what could I replace them with? :D
05-06-02, 09:30 AM
the same plugs for the rb20,25,26
the guy at Independant motor mart had a NZ catalogue and it showed different part listings for rb20 and rb25, would there be a gap difference?
05-06-02, 03:09 PM
"What kind of plugs for a rb25det huh? I have some pretty HKS plugs that came with the engine, but what could I replace them with? "
wait for it
HKS 300klm plugs
05-06-02, 03:56 PM
yeah it would be a gap difference.
sitting in front of me on my desk I have
ngk BCPR^EY-11 coppers
once you get over the the mystery of removing the covers and coil packs a plug change isn't that hard
hell even I can do it
05-06-02, 04:14 PM
what do you recomend copper or the $18 Platinum
05-06-02, 04:23 PM
I use the copper why beacsue if the car is running rich the platium plugs foul coper ar only around $3 each and mine have been on for 15000 klms :-)
05-06-02, 04:31 PM
you have a rb20 right
what gap would you use for normal boost and for higher boost
you wouldnt be able to give me the part number
05-06-02, 04:37 PM
just gap them to .08 I listed the part number a couple of posts ago and yeah its for an rb20. pull your ones out they might be ok but just need to be regapped.
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