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Spark Plugs for R33 GTST

NYL83R

By NYL83R,
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NYL83R Proficient

NYL83R

Posted
Posted

I know there has been other post on spark plugs, but i'm still a bit confused....

A number of plugs have been recommended, but i'm not sure which type to use.

My car currently has NGK-R BKR7E 11

Is this the right plug for a stock RB25DET running stock boost?

only mod is a 3" exhaust with dump pipe.

Repco recommended NGK-R PFR5G-11

what is the correct gap?

Any help would be apreciated

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https://www.sau.com.au/forums/topic/49351-spark-plugs-for-r33-gtst/
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locosam Contributor

locosam

Posted
Posted

I just changed spark plugs last week. Using NGK BPR6ES-11 These are just standard copper plugs

Was a bit of a pain to change since i didnt really have the right tools though.

I gapped them down to 0.8mm

Everything runs fine.

Edit: (A year later 16/5/05)

Turned out that everyone is not fine. Since that time, ive added a fmic and boosted it. After a few weeks i started to get misfires under load. I thought that it was my sparkies going out, so i replaced them (with the same bpr6es). But unfortunately, the problem still existed.

Not knowing what the problem was, took it down to a reputable mechanic who discovered in the end that all along that the bpr6es were the wrong spark plugs for the rb25. Physically, they are bigger and longer. Turned out that it was squashing the spring tensioner inside the coil which caused the misfire somehow.

Anyway, no serious damage afaik. The spark plugs youre meant to use are NGK BKR7E-11 (or maybe another heat range if you prefer, gapped down if needed)

Compared side to side, the new plugs are smaller and is the samel size as the ones that came with the car when it first came from japan.

Goes to show that you shouldnt believe everything you read on the forums :(

Anyway, ill report back if there are anymore issues with the plugs

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