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Old 03-20-2005, 22:01   #1 (permalink)
3 dog nite@swatch.com
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picknose i want an appology

On Sun, 20 Mar 2005 20:47:08 -0500, nospam.clare.nce@sny.der.on.ca
wrote:

>On Sun, 20 Mar 2005 19:27:28 -0500, "pick one" <try again!> wrote:
>
>
>>
>>The average temperature to form NOx is 2500 degrees. There are some in the
>>science community that say it's closer to 2700 degrees. The average temperature
>>of the exhaust leaving the engine is 1500 degrees. Just leaving the head and
>>entering the exhaust manifold the exhaust temperature lost 1000 degrees. Explain
>>how a cylinder and related cylinder parts like the valves and pistons designed
>>to handle temperatures of at least 2500 degrees ( and I'll bet they can handle
>>much higher ) will be damaged buy some lower temperature gas that can not escape
>>in it's normal manner? Years ago before catalytic converters and EGR valves
>>cylinder temperatures went very much unchecked. Engine pinged? Retard the timing
>>or buy premium fuel. The materials used today in the parts that make up the
>>engine are far better than what was used even 20 years ago. As much as you want
>>to keep this dead horse alive, you can not do it. A plugged exhaust will cause
>>loss of power and eventually keep the engine from running, nothing more. You do
>>not agree with that statement? Instead of three word grunting sentences, in a
>>logical well thought out paragraph. Explain how a cooling gas is going to raise
>>in temperature high enough to cause damage to parts that are thousands times a
>>second subjected to at least 1000 degrees higher temperatures? Parts that are
>>subjected to not only very high temperatures but very high pressures.
>>

>
>
>Not coming to Hurc's defence, BUT a partially plugged exhaust CAN
>cause engine temp to go up. The reason the exhaust has lost 1000
>degrees is because the water jackets and other engine parts have
>absorbed all the heat.
>However, once it gets plugged a bit worse, the engine does not get
>enough air-fuel mixture to produce enough heat (or power) to do much
>harm.
>
>A previous responder mentioned something about 1996 and newer vehicles
>having temp sensors at both ends of the cat.
>This is not correct. The have O2 sensors at inlet and outlet - and if
>both sensors read the same the computer knows the cat is not
>functioning.
>
>Also, someone mentioned the switching from rich to lean - and
>intimated that was required to allow the cat to work, because one part
>of the cat (oxidizing bed) required a rich mixture, and the other
>(reducing) required a lean mixture. This is also wrong.
>
>The catalyst DOES require a relatively rich mixture to function - but
>the switching back and forth from rich to lean is due to the
>non-linear nature of the O2 sensor. It can NOT determine the actual
>oxygen content, but knows if it is too rich or too lean. It switches
>between rich and lean to get the proper average mixture.
>There are a few vehicles that use a linear O2 sensor, and the mixture
>on these vehicles does not fluctuate. The Civic VX was one good
>example.


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Old 03-21-2005, 06:01   #2 (permalink)
pick one
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Re: picknose i want an appology


>

Really what for?


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Old 03-21-2005, 18:01   #3 (permalink)
3 dog nite@swatch.com
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Re: picknose i want an appology

On Mon, 21 Mar 2005 06:41:49 -0500, "pick one" <try again!> wrote:

>
>>

>Really what for?
>

appoligize for the bad advice you give
lmfao
yankee unskilled labor

hurc ast
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Old 03-21-2005, 19:01   #4 (permalink)
pick one
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Re: picknose i want an appology

What bad advise?
<3 dog nite@swatch.com> wrote in message
news:t3qu31ptc9f873mmc1igai2avha5li8hsh@4ax.com...
> On Mon, 21 Mar 2005 06:41:49 -0500, "pick one" <try again!> wrote:
>
>>
>>>

>>Really what for?
>>

> appoligize for the bad advice you give
> lmfao
> yankee unskilled labor
>
> hurc ast



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Old 03-21-2005, 23:01   #5 (permalink)
3 dog nite@swatch.com
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Re: picknose i want an appology

On Mon, 21 Mar 2005 20:18:43 -0500, "pick one" <try again!> wrote:

>What bad advise?


pretty much everything you spew

lmfao
picnose sez " a hammer fixes everthing"




hurc ast
><3 dog nite@swatch.com> wrote in message
>news:t3qu31ptc9f873mmc1igai2avha5li8hsh@4ax.com...
>> On Mon, 21 Mar 2005 06:41:49 -0500, "pick one" <try again!> wrote:
>>
>>>
>>>>
>>>Really what for?
>>>

>> appoligize for the bad advice you give
>> lmfao
>> yankee unskilled labor
>>
>> hurc ast

>


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Old 03-21-2005, 23:01   #6 (permalink)
pick one
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Re: picknose i want an appology


<3 dog nite@swatch.com> wrote in message
news:4jav31t69e21uqpj7m9pc9j2gtlr6celvm@4ax.com...
> On Mon, 21 Mar 2005 20:18:43 -0500, "pick one" <try again!> wrote:
>
>>What bad advise?

>
> pretty much everything you spew
>
> lmfao
> picnose sez " a hammer fixes everthing"
>
>


Really? Where? Why don't you post that. Or did your "old teach" send you a web
article?
>
>
> hurc ast
>><3 dog nite@swatch.com> wrote in message
>>news:t3qu31ptc9f873mmc1igai2avha5li8hsh@4ax.com...
>>> On Mon, 21 Mar 2005 06:41:49 -0500, "pick one" <try again!> wrote:
>>>
>>>>
>>>>>
>>>>Really what for?
>>>>
>>> appoligize for the bad advice you give
>>> lmfao
>>> yankee unskilled labor
>>>
>>> hurc ast

>>

>



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