[DeTomaso] Spark plug question

[asajay at asajay.com]

This was in the Mach I, when it was my daily driver back in the  
1980's, on a 30 mile commute.  They were Bosch Platinum plugs.  They  
didn't oil foul.

Just stirrin' up the Grouchy Old Man.

Asa Jay

Quoting adin at frontier.net:

>
>
> Xmas list for Asa jay:
>
> Penzoil
> Platinum plugs
>
>
> The plat plugs "might" not foul if you drive the car, IMO.
>
>
>
> Quoting asajay at asajay.com:
>
>> I HATE PLATINUM plugs in a 351C.  Tried them once, NEVER again.  Ran
>> GREAT for a little while... six months later, performance was
>> suffering badly.  Changed to NGK UR4 and never looked back.
>>
>> Platinum (for me) just don't see to be a good choice for a big old
>> fashioned iron V8 like the 351C.  I would pull them and toss them
>> about as far as I could chuck them.
>>
>> Now with that said, some of the plugs look fine, but one or two look
>> like you are getting some oil fouling.  That could be rings, valve
>> stem seals... OR simply poor plug performance allowing more oil to get
>> into the cylinder by not firing well enough to properly pressurize the
>> cylinder.
>>
>> Did I mention I HATE platinum plugs?
>>
>> Asa Jay
>> (AC Delco, Bosch, Champion and anything else except Autolite or NGK
>> will not work in a 351C)
>>
>> Quoting Brent Stewart <bjbstewart at yahoo.com>:
>>
>>> All,
>>>
>>> I changed mu plugs for the first time in a year and didn't think
>>> much of it. It was my first change since owning the car, and I was
>>> actually surprised at how easy it was. The previous owner said that
>>> he had just changed them before I purchased the car. I wasn't
>>> changing for any particular reason other than I was doing annual
>>> maintenance and figured I should before Reno.  I replaced them with
>>> what was currently installed - Autolite Double Platinum APP 25's.
>>>
>>> Upon taking it out for a quick test drive, i was REALLY surprised at
>>>  how much more powerful and, well, quick it was! Throttle response
>>> was much better, acceleration was more than noticeably better. While
>>>  initially excited about my findings, I soon began to try and
>>> understand why this would have had such a big impact.
>>>
>>> Here are my questions.  I went back to study the plugs I had
>>> removed. One thing I was immediately bothered by was the amount of
>>> oil around the threads. I don't recall that as being normal.  I
>>> don't have leaks, and the engine certainly doesn't smoke, but it is
>>> an internally stock engine with 72k miles.  Also, how do the plugs
>>> look?  There seems to be a lot of build up around the base of the
>>> plug, but he tip looks clean?  Take a look at the pictures and let
>>> me know what you think.  Appreciate any feedback!
>>>
>>> Single plug:
>>> http://tinyurl.com/cxsalk
>>>
>>> Several other picts:
>>> http://tinyurl.com/d5rguw
>>>
>>> Thanks!
>>> brent
>>> _______________________________________________
>>>
>>> Detomaso Forum Managed by POCA
>>>
>>> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>>>
>>> DeTomaso mailing list
>>> DeTomaso at list.realbig.com
>>> http://list.realbig.com/mailman/listinfo/detomaso
>>>
>>
>>
>> _______________________________________________
>>
>> Detomaso Forum Managed by POCA
>>
>> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>>
>> DeTomaso mailing list
>> DeTomaso at list.realbig.com
>> http://list.realbig.com/mailman/listinfo/detomaso
>>
>
>
>
> _______________________________________________
>
> Detomaso Forum Managed by POCA
>
> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>
> DeTomaso mailing list
> DeTomaso at list.realbig.com
> http://list.realbig.com/mailman/listinfo/detomaso
>