300zx spark plugs

[shea300zx]

Guys i have bought ngk BCR8ES spark plugs for my 300zx tt and gapped them to .044 but the car runs crap at this gap,can someone tell me what the correct gap on the plugs might be?Thanks all

[NolimitZ32]

You bought the wrong plugs, save yourself the trouble and buy OEM plugs.

[Ace2cool]

NGK PFR6B or nothing. They stick further into the head for more complete combustion. And they're pre-gapped.

[amc49]

As someone who sold plugs for years I can firmly say one should NEVER assume the plugs are pre-gapped. The boxes get dropped more times than you can count and pregapping is only done to the one spec most used by the plug as far as applications go. Meaning by far many of them can be pregapped but they will be at the wrong gap done like that. The manufacturers do NOT custom gap a certain plug to be at all the gaps that plug gets used at. As well I have seen thousands of them in great batched be set at the wrong gap.

ALWAYS physically check it and every single one of them. Out of 4 I almost always find one that is off.

[shea300zx]

Ok thanks guys so,just to be sure will these ones be ok for a jap import TT
https://amazon.co.uk/gp/product/B000GX9 ... 1OLE&psc=1

[Ace2cool]

Seems like it. Everywhere I look up 4014, it shows PFR6B, so I'd say that should be correct. Funny, Amazon says these do not fit my 1991 Nissan. lol.

[NolimitZ32]

If the picture is of the actual plug I don;t think its right, doesn't look like a projected nose. I have to agree with AMC on always checking the gap, now things get finiky with iridiums because of how easy the electrode is to damage but yes, always check.

[shea300zx]

Seems like it. Everywhere I look up 4014, it shows PFR6B, so I'd say that should be correct. Funny, Amazon says these do not fit my 1991 Nissan. lol.

It does mate,down the bottom

Ford Transit Van 2.3 16V [RWD] (2000 - 2006) 107kW
Nissan 300 ZX 3.0 Twin Turbo (1989 - 2000) 208kW
Ford Scorpio Mk II 2.9 i 24V (1994 - 1998) 152kW
Isuzu Trooper Closed Off-Road Vehicle 3.5 V6 24V (1998 - 2004) 158kW
Subaru Legacy Mk II 2.5 i 4WD (1994 - 1999) 110kW
Ford Scorpio Mk II 2.0 i 16V (1994 - 1998) 100kW
Ford Scorpio Mk II Estate 2.9 i 24V (1994 - 1998) 152kW
Subaru Legacy Mk II Estate 2.5 i 4WD (1994 - 1999) 110kW
Ford Transit Bus 2.3 16V [RWD] (2000 - 2006) 107kW
Ford Transit Platform/Chassis 2.3 16V (2000 - 2006) 107k

[NolimitZ32]

It's the wrong plug, is the right series but it's not projected. Take a look at the projection (part of plug past the thread). Also the one you posted is a -11 not a -11B, the B signifies that its projected, your car may run, it may even run ok with the plug you posted but its not the right plug for the car.

https://conceptzperformance.com/nissan- ... _19279.php

[shea300zx]

How about the denso Denso 3168 PK20PR11,i was talking to a local moter factors and they said they were exactly the same

[itsa300zx]

Give these a try; I've bee using them for over 6 years and are great alternative to the OEM -11B TT plugs.
select heat range 6 for stockish power.

https://specialtyz.com/shop/300zx/ngk-i ... plugs.html

[NolimitZ32]

All of these plugs may work, many say that they do, I'm my experience only the OEMs work well. Others may disagree.

[amc49]

As an ex-drag racer that cut fine lines on plug heat ranges I can tell you it is best to stay with the OEM plug specified as the heat range is guaranteed to be pretty much correct then. When you pick another makers' plug they tend to often split their interpretation of heat ranges to have the plug maybe in the middle of two of what the OEM specifies as the correct running temperature range. Say NGK says 7 and the plug you buy covers 6 or 8 mostly yet can span part of the 7 heat range, the life of the plug can drop there, as well as engine performance. Why I never hung with any particular brand of plug, I used whatever the OEM used and no issues at all, plugs being pretty much identical as long as the same basic type is used. When you hear a guy say this plug or that is crap you can ask and 9 times out of 10 he has used an off brand plug or incorrect type for the engine brand there.

The tip type and configuration can affect heat range as well. Multiple tips or jumping off points are the worst, say Bosch +4 or E3, the more the jumping off points the colder the plug runs as localized heating from jumping off points held in close heat the end up more. The multiple tips also block flame propagation and I don't care how many 'engineers' say otherwise.