[s-cars] Which spark plugs

[Mike Miller]

I ran F5DP0R's in my 91 200q's without issue - swapped one set out after 
100k+ miles just because. They still looked good and ran fine.

In the current UrS6, running over 25psi boost, I'm using FR5DTC which 
seem to be doing OK. Not a lot of miles on them yet - maybe 5k.

--mike

On 3/21/2014 10:21 PM, Scott Justusson wrote:
> Er, ok add me to the list of those *not* using FD5POR *ever* again, because when I had my shop, I have seen too many fail from the box, blow a pin hole in the ceramic and or just lose the electrode all together on high boost.  I had really good luck with NGK Iridiums for a while, but have recently just been content with a plain old Porsche Turbo app triple copper plug.
>
> FYI, that FD5 is supposed to have a 25k service interval in a stock 20vt engine, so beyond 30k (IME) you are asking for coil pack issues from a resistance problem.  I know I am not the exception to the opin that the FD5POR is hardly first prize at the spark plug county fair.  Bet you won't find m-any I5 tuners using that plug.  Lose and electrode once, you won't swear *by* them ever again.
>
> Just sayin
>
> Scott J
> 7 x 20vt engines = 0 x FD5POR equipped
>
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> -----Original Message-----
> From: Tom Green <trgreen at comcast.net>
> To: s-car-list <s-car-list at audifans.com>
> Sent: Fri, Mar 21, 2014 4:47 pm
> Subject: Re: [s-cars] Which spark plugs
>
>
> If you are operating the car with the stock turbo and stock or
> modified chip sets producing ~ 21psi boost, there have been no
> reported problems with the Bosch F5DPOR plugs.  These plugs cost more,
> but there are aftermarket sellers online that have them for ~$10 ea.
> These plugs also last for at least 30K miles.  These are what I use in
> my cars RS2 and MTM 1+ and my neighbors 2 UrS6 vehicles, 95.5 and 97
> tuned with MTM 1+ chip sets.
>
> This must be more than just a "rumor".  You must have specific
> information if you feel compelled to ask.  Anyone who is making
> recommendations to you should stand by them with specifics and their
> name.  That's  the way we operate.
>
> This spark plug thing is much like the oil or tire question.  You will
> get about as many solid recommendations as there are choices.
>
> Tom '95 S6
>            '95.5 S6 avant
> Knoxville, TN
>
> On Friday Mar 21, 2014, at 9:45 AM,  "Radek" <radek at uniserve.com>wrote:
>
>> Hello everyone;
>>
>> What is the list's wisdom as to the best spark plugs?  I heard
>> rumours that Bosch may not be the preferred plug for these cars, any
>> truth to this?  Car is a 1996.
>> Thanks.
>>
>> Radek.
>
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