[Diy_efi] Re: OT - platinum plugs burning up wires (Rick McLeod)

[Daniel R. Nicoson]

I went the other way with my BMW.  Straight six, over 10:1 compression, coil
on plug.  I thought the BMW prices were silly for platinum plugs ($12 or
so/plug).  It has run just fine with standard $2.50 NGK plugs.

FWIW,

Dan Nicoson


> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
> Behalf Of Stuart Hall
> Sent: Monday, September 12, 2005 7:07 PM
> To: diy_efi at diy-efi.org
> Subject: [Diy_efi] Re: OT - platinum plugs burning up wires (Rick
> McLeod)
>
>
>
> >I have to agree on the turbo w/ plat's, I have 4
> >gas/turbo cars, and ALL of them (3 Volvos and a GM)
> >HATE plat's, stock OEM plugs w/ large electrodes seem
> >to create the best light-off of the mix under higher
> >boosts, which relates to higher compression. I don't
> >have a 'hi-comp' engine to relate to (my GM v8's are <
> >9:1) and plat's weren't around when I built my 10.5:1
> >GM BB nearly 30 years ago, so no experience there, but
> >would be interested to hear what folks running hi-comp
> >have learned.
> >
> >Thanks, everyone, for the great disscussions so far.
> >And, what's even better, no flames! Thanks
>
> Hey guys, my first post here so I hope I get this right!
>
> I drive a 1990 300ZX NA and if memory is correct it has a reasonably high
> compression ratio of around 10.5:1... the factory plugs are
> platinum and a
> sticker under the hood says to only replace with platinum plugs every
> 100,000ks... so I guess they last longer than regular plugs, and work in
> high comp engines, but I think the ignition circuit is probably different
> for them, if there is an actual resistance difference as people
> have pointed
> out here... the Z engine has individual coil packs on the top of
> each plug,
> so no real high tension leads to speak of either... not sure if this all
> helps anyone or just causes more confusion :p
> cheers,
> Stu
>
>
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