Sparkplug Recommendation

[MNBoxster]

Hi,

As mentioned, stick with the OEMs. You can get them at NAPA for about $6. Hope this helps...

Happy Motoring!... Jim'99

[CJ_Boxster]

well i bought bosch platinum 2's, suport adviser at porsche told me its what they use but are lot labeled like the store bought type...but they are bosch plugs with 2 tips.

[MNBoxster]

Originally Posted by CJ_Boxster

well i bought bosch platinum 2's, suport adviser at porsche told me its what they use but are lot labeled like the store bought type...but they are bosch plugs with 2 tips.

Hi,

My advice is to return them. There have been several reports of the platinum tips breaking off and causing internal engine damage. I believe there is even a TSB out on it. I'll look for it and post the # if I find it. Platinum plugs do no more than any other plug except they cost more and have the potential to do harm. Hope this helps...

Happy Motoring!... Jim'99

[CJ_Boxster]

ok ill do that, what the brand/type that i would get from napa?

[MNBoxster]

Originally Posted by CJ_Boxster

ok ill do that, what the brand/type that i would get from napa?

Hi,

You don't mention your model year or type (a no-no when asking for advise), the following plugs can be had from NAPA and match the following:

• 2.5L engine / 2.7L engine / 3.2L Engine
  
  Bosch FR7 LDC4 / Bosch FGR 6KQC / Bosch FGR 7KQC

You want to torque them to 30+3Nm or 22+2 Ft.Lbs. to insure the proper indexing. Also, the Gap s/b 0.35". Hope this helps...

Happy Motoring!... Jim'99

[blue2000s]

Originally Posted by MNBoxster

Hi,

My advice is to return them. There have been several reports of the platinum tips breaking off and causing internal engine damage. I believe there is even a TSB out on it. I'll look for it and post the # if I find it. Platinum plugs do no more than any other plug except they cost more and have the potential to do harm. Hope this helps...

Happy Motoring!... Jim'99

Platinum is used on spark plug electrodes to extend the service life of the plug. Platinum reduces electrode vaporization over conventional materials therefore increasing the number of firings before the ignition system can no longer support a sufficient spark. There is certainly a difference.

Having said that, there are also differences in the quality of any manufacturer's plug. By using OEM plugs, you are ensuring that the plug you use has been tested to perform to Porsche's specificaions, actually operates within the correct heat range, and will hopefully be manufactured a high quality standard.

[MNBoxster]

Originally Posted by blue2000s

Platinum is used on spark plug electrodes to extend the service life of the plug. Platinum reduces electrode vaporization over conventional materials therefore increasing the number of firings before the ignition system can no longer support a sufficient spark. There is certainly a difference.

Having said that, there are also differences in the quality of any manufacturer's plug. By using OEM plugs, you are ensuring that the plug you use has been tested to perform to Porsche's specificaions, actually operates within the correct heat range, and will hopefully be manufactured a high quality standard.

Hi,

Agreed on the extended service. But, most Platinum Plugs are marketed as a Performance enhancer which they certainly are not.

Platinum may extend the service life, but on a Performance Car you shouldn't be looking for that at all.

There are many reasons a Spark Plug can fail such as cracked electrodes or arcing and considering that they are perhaps the cheapest item to replace, especially on a Porsche, you should change your plugs every 25k mi. or 2 years whichever comes first. Stick with the OEM to preserve the proper indexing (something most don't consider or even know about).

Not doing so won't make the engine explode, but you should take the opportunity to inspect the CoilPak and the Sparkplugs and their Tubes and 'O' rings long before the 30k or 60k mi. intervals spec'd. Since you're already there so far as changing them is concerned, it's most practical to do so then. Fresh Plugs will aid in gaining max performance and max MPG, so the payback's there as well...

Happy Motoring!... Jim'99

[blue2000s]

Originally Posted by MNBoxster

Hi,

Agreed on the extended service. But, most Platinum Plugs are marketed as a Performance enhancer which they certainly are not.

Platinum may extend the service life, but on a Performance Car you shouldn't be looking for that at all.

There are many reasons a Spark Plug can fail such as cracked electrodes or arcing and considering that they are perhaps the cheapest item to replace, especially on a Porsche, you should change your plugs every 25k mi. or 2 years whichever comes first. Stick with the OEM to preserve the proper indexing (something most don't consider or even know about).

Not doing so won't make the engine explode, but you should take the opportunity to inspect the CoilPak and the Sparkplugs and their Tubes and 'O' rings long before the 30k or 60k mi. intervals spec'd. Since you're already there so far as changing them is concerned, it's most practical to do so then. Fresh Plugs will aid in gaining max performance and max MPG, so the payback's there as well...

Happy Motoring!... Jim'99

Although you could consider them a performance enhancement in that the performance of the plug does not degrade as quickly as a conventional plug, keeping up a consistant spark for far more miles.

[MNBoxster]

Originally Posted by blue2000s

Although you could consider them a performance enhancement in that the performance of the plug does not degrade as quickly as a conventional plug, keeping up a consistant spark for far more miles.

Hi,

While your arguement makes sense, if you swap the plugs at 25k/2 yr intervals, the point is moot...

Happy Motoring!... Jim'99