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Old 11-21-2012, 11:53 PM   #1
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SR20 spark plugs
Just got a quick question, which spark plugs on my SR20DET Notchback? I heard the 93 Nissan SER?


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Old 11-22-2012, 01:19 AM   #2
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Search guy, plenty of information out there.

Or you can pull out an old spark plug and read the number on the plug.
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Old 11-23-2012, 03:06 PM   #3
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bkr7e

dont get iridium

get that exact part number
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Old 11-26-2012, 10:41 PM   #4
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Quote:
Originally Posted by s13mikesr20 View Post
bkr7e

dont get iridium

get that exact part number
I don't mean to split hairs, but the new NGK part number is 4644 for that plug. I know a lot of the new systems don't agree with the BKR numbers anymore but love that 4644 number

But aside from that, totally agree. Love the plugs!
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Old 11-28-2012, 12:33 AM   #5
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Heat range 7, 6 are ok too thought.
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Old 11-28-2012, 08:49 PM   #6
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What ive noticed on SR20's with OEM coil packs, if you run it up around 400-500 horsepower sometimes plugs become an issue and need a serious de-gapping. Same with 2jz-gte engines.

but iridiums seem to fix that issue. I can count at least three times that changing plugs to iridiums on the dyno fixed a breakup/misfire. I dont like it, but it does work in a pinch.
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