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Spark plugs for a turbo L28?


Guest Anonymous

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Guest Tim78zt

Hi Simon! The simple answer is BPR-6ES, but the real question you want to ask everyone is what gap their plugs are set at!!! You should get some interesting replies!! BTW, to start things off, I'm pretty sure mine are set at .036"

 

Tim78zt

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quote:

Originally posted by Tim78zt:

Hi Simon! The simple answer is BPR-6ES,

 

The -6ES plugs are the stock heat range. For the application that Simon is doing, the plugs should be at least one heat range colder (BPR-7ES). I currently run the -8ES plugs with no problems. As far as gap - I run a 0.030" gap, to help minimize any misfires under boost.

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Guest Anonymous

Thanks guys. . .lots to think about.

Im running a wasted spark system.. 3 2-pole coils and 3 ignition modules controlled by my computer & a crank trigger so I can probably run with a normal gap, I was thinking of running 1 or 2 stages colder.

Has anyone tried or got any opinions about the 4 electrode plugs?

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Guest Anonymous

Thought you might be interested. . .

just got an email from NGK and they suggested using BPR9EVX on my engine.

Seems fairly cold, but they must know what they're talking about.

Going from their chart its:

B - 14mm thread diametre

P - Projected insulator type

R - Resistor type

9 - 9 heat range (6 standard for z)

E - 19mm thread reach

VX - High performance platinum

cheers - Simon

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