[Diy_efi] O2 sensor mounting

[Mike V]

The GMC Syclones & Typhoons used the heated GM sensor just downstream of the 
turbo, pointing straight down.
mv
----- Original Message ----- 
From: "Jason M." <galaxiecustom500 at sbcglobal.net>
To: <diy_efi at diy-efi.org>
Sent: Monday, April 16, 2007 5:57 PM
Subject: Re: [Diy_efi] O2 sensor mounting


> You want the heated sensors pointing down.  Also the aftermarket wide band 
> sensors/controllers will also instruct you to leave the heater off for a 
> few seconds so any condensation in the exhaust can be blown out.  Hot 
> ceramic + relatively cool water = dead sensor.   At least this is what 
> they say. Maybe you can get away with more with a narrow band sensor?
> ----- Original Message ----- 
> From: "Frank McCracken" <frankmccracken at shaw.ca>
> To: <diy_efi at diy-efi.org>
> Sent: Monday, April 16, 2007 4:48 PM
> Subject: Re: [Diy_efi] O2 sensor mounting
>
>
>> So that makes me think, Is it just the non-heated O2 sensors that need to 
>> be
>> mounted pointing downwards?
>> Frank.
>>
>>
>> ----- Original Message ----- 
>> From: "Frank McCracken" <frankmccracken at shaw.ca>
>> To: <diy_efi at diy-efi.org>
>> Sent: Monday, April 16, 2007 11:18 AM
>> Subject: Re: [Diy_efi] O2 sensor mounting
>>
>>
>>> Thanks guys, it is a heated sensor. And it is a bit of a function over
>> form
>>> machine..... not quite a track beater tho.
>>>
>>>
>>> ----- Original Message ----- 
>>> From: "Rick McLeod" <dunvegan at sbcglobal.net>
>>> To: <diy_efi at diy-efi.org>
>>> Sent: Monday, April 16, 2007 9:21 AM
>>> Subject: Re: [Diy_efi] O2 sensor mounting
>>>
>>>
>>> > I personally would hide the sensor, and as for the condensation thing,
>> I'm
>>> not too sure I buy that rational, as there isn't going to be a major 
>>> temp
>>> difference when running at normal op temp, in all the reading on these
>> I've
>>> done I've never see or read anything that directly discusses position 
>>> vs.
>>> longevity, which is what I believe the condensation theory is based on.
>>> Furthermore, if that is a major concern, maybe using a heated element
>> would
>>> also minimize the concern, works when they're mounted significant 
>>> distance
>>> from the exhaust port during cool weather, but from my experience w/ 
>>> good
>>> 4>1 headers the temp at the collector tube is still reasonably high, so 
>>> I
>>> can't imagine you're gonna see any problems.
>>> >
>>> > good luck, just my 2 C worth, cheers
>>> >
>>> >
>>> > ----- Original Message ----
>>> > From: Frank McCracken <frankmccracken at shaw.ca>
>>> > To: diy_efi at diy-efi.org
>>> > Sent: Monday, April 16, 2007 10:55:45 AM
>>> > Subject: [Diy_efi] O2 sensor mounting
>>> >
>>> >
>>> > I am installing my Hooker side exhaust on my '65 Corvette. I would 
>>> > like
>> to
>>> mount my O2 sensor at about 5:o'clock in the 4" tube so that it will be
>> not
>>> hanging out there. The collector with this system is outside of the
>> fender.
>>> My choices would be on top or down low on the inside to hide it. I hear
>> that
>>> it should be pointing down so condensation will run off. The sensor has
>> been
>>> at about 4:o'clock in my old system for the last 2 years will no ill
>> efects.
>>> If it's gotta hang out so be it. What should I do, anyone?
>>> > Frank
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>>
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