[TPR] Spark plug eval - 2013: pre-SSCC

[John Bentley]

I think trying to learn anything concerning mixture by running similar rpm tests in a lower gear will not work. The vacuum will be all wrong and power valve position and mixture will not be the same. JB

Sent from my iPhone

On Jul 6, 2013, at 8:18 AM, David <adin at frontier.net> wrote:

> IMO and experience: tail pipe could be some indicator of a change, but not a definitive indicator or anything. The only sure way to judge plug temps is to look at all of them. The only sure ways to judge mixture are by reading the plug (and factoring driving) and/or with a properly calibrated a/f gauge. The possible error I see in this case is looking at the plugs after the trip home!  Should hAve been done at the finish line. But , if you have no indicators ( eg surging or flat spots) of problems then you may be on the right track. 
> 
> A
> Simulation of race conditions could be done (race rpm in second gear for some miles?) to double check. 
> 
> The plug looked white (lean) to me and this may. Of be the truth. 
> 
> Cheers,
> 
> Sent from my handheld gizmo, please forgive my typing!
> 
> On Jul 6, 2013, at 8:56 AM, Asa Jay Laughton <asajay at asajay.com> wrote:
> 
> Mostly greyish-black, not white.
> Asa Jay Laughton, MSgt, USAFR, Retired
> & Shelley Marie
> Spokane, WA
> ******************************     
> http://www.racingagainstautism.com
> http://www.teampanteraracing.com
> http://facebook.com/racingagainstautism
> 
> On 7/5/2013 8:40 PM, michael at michaelshortt.com wrote:
>> 
>> I think the plug looks really good, any leaner and you might be courting problems.
>> How's the exhaust look, gray or white pipes?
>> 
>> Michael Shortt
>> 
>> On Jul 5, 2013 11:36 PM, "Asa Jay Laughton" <asajay at asajay.com> wrote:
>>> No sir,
>>> I'm soliciting feedback from fellow gearheads to make sure I'm not
>>> assuming something incorrectly about what I'm seeing.
>>> 
>>> But I -was- the only one who didn't -trailer- their Pantera last year.
>>> :)  If that's what you were referring to.
>>> 
>>> Asa
>>> 
>>> Asa Jay Laughton, MSgt, USAFR, Retired
>>> & Shelley Marie
>>> Spokane, WA
>>> ******************************
>>> http://www.racingagainstautism.com
>>> http://www.teampanteraracing.com
>>> http://facebook.com/racingagainstautism
>>> 
>>> 
>>> On 7/5/2013 8:13 PM, TPR wrote:
>>> > Are you bragging again? ;-)
>>> >
>>> >
>>> > Asa Jay Laughton <asajay at asajay.com> wrote:
>>> >
>>> >> Hey all,
>>> >> Sample spark plug #2 attached.  All eight looked nearly identical to
>>> >> this one.  I'd attach more photos but they are a bit fuzzy.  I'll put
>>> >> them up in the gallery later.  This is after about 3,000 miles on the
>>> >> new engine, drive to SSCC, race at SSCC and drive home.  Looking good to
>>> >> me so far.
>>> >>
>>> >> Asa
>>> >>
>>> >> --
>>> >> Asa Jay Laughton, MSgt, USAFR, Retired
>>> >> & Shelley Marie
>>> >> Spokane, WA
>>> >> ******************************
>>> >> http://www.racingagainstautism.com
>>> >> http://www.teampanteraracing.com
>>> >> http://facebook.com/racingagainstautism
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