What spark plugs to use / Engine Oil

Hi All,

Just wondering on the above whats the best to use as car is going for mapping in the next 2-3 weeks

1995 J-Spec with 62k miles, stock bottom end, HKS 264 cams, HKS T51 SPL Turbo Kit, AEM ecu

Just looking at getting the car prepared before it goes to dyno etc

What oil and sparkplugs would you advise?

Thanks in advance

I use BKR8EIX plugs and 10w50 oil as recommended to me on my single setup

Titan race pro oil from opie oils

Thanks for the reply Berg

Really if you are getting the car mapped it should be mapped with copper core plugs. If it dets the plug just melts and it goes off a cylinder. If you are using an iridium plug it will just keep on sparking and heating until you hole a piston

I remember someone mentioning that before regarding the copper core plugs for mapping. If i use them for the mapping what plugs then should i put in after the mapping is done?

I still use copper core in mine at 745bhp. Nothing wrong with running them thereafter just a shorter service life

Really if you are getting the car mapped it should be mapped with copper core plugs. If it dets the plug just melts and it goes off a cylinder. If you are using an iridium plug it will just keep on sparking and heating until you hole a piston

 

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Not sure where you get that idea, the only problem with iridium is that they are more fragile when encountering det, and the ceramic insulator will fracture and just like metal in the cylinder will likely cause damage.

 

Iridium plugs apart from being fragile are not some super plug and go on working after the electrode is has broken/melted. also all plugs have a copper core.

 

On a side note to the OP ask the mapper which plugs hae prefers to map with, most will request a slightly colder than what you would normally use, whether copper , platinum or iridium, for just the reasons i mentioned, so the 8s should be OK, engine oil wise the choice is yours.

Not sure where you get that idea, the only problem with iridium is that they are more fragile when encountering det, and the ceramic insulator will fracture and just like metal in the cylinder will likely cause damage.

 

Iridium plugs apart from being fragile are not some super plug and go on working after the electrode is has broken/melted. also all plugs have a copper core.

 

On a side note to the OP ask the mapper which plugs hae prefers to map with, most will request a slightly colder than what you would normally use, whether copper , platinum or iridium, for just the reasons i mentioned, so the 8s should be OK, engine oil wise the choice is yours.

Well only because its true. Copper plugs melt and stop sparking. An iridium plug has an alloy electrode and keeps on going for far longer

We will just have to disagree, Like any plug once the tip has gone it wont spark...unless you have some super powered ignition system;), that's why iridium are not favored, its the tip that breaks due to its hardness/brittleness and takes the ceramics with it, unlike copper which just melt the tip, seen it happen, and the ensuing damage...which was not a melted piston but mullered rings and skirt and barrel.

We will just have to disagree, Like any plug once the tip has gone it wont spark...unless you have some super powered ignition system;), that's why iridium are not favored, its the tip that breaks due to its hardness/brittleness and takes the ceramics with it, unlike copper which just melt the tip, seen it happen, and the ensuing damage...which was not a melted piston but mullered rings and skirt and barrel.

Correct sir