I have a pacesetter header [again, really liked the one from Kingston in
England, but no time to get one this time]. The wide band O2 sensor is
mounted on top of the collector -- just after the pipes all come together.
This is a heated sensor. It is hooked to an Innovate wide band meter --
LM-1. This is a recording device also. I also got an LM-3 axillary box.
This allows me to record the rpms [from the Crane ignition]. The LM-3 has a
built in MAP sensor, so I have hooked the PI vacuum to it. Hope to have the
car running this weekend. With this setup I can read MAP, RPM and O2 so can
get the TR PI system dialed in. The devices allow 45 minutes of recording,
so can capture actual run data. The Aux box also has built in linear and
lateral accelerometers, so will be able to determine cornering forces and HP
and Torque. A real rolling dyno of sorts. Results to follwo.
On Thu, Mar 27, 2008 at 7:21 AM, Joseph Grant <grant@bowtie6.com> wrote:
> John,
>
> You need to mount the sensors as close to the manifold as possible. This
> is
> why: in order for the sensors to come online, they need to heat up. The
> sooner they come online the quicker an FI PCM goes into closed loop. Are
> you running FI on your engine or are you hooking the o2 sensors to one of
> those meters that show the air/fuel ratio? Either way, the sensors need
> to
> heat up quickly before they can start giving proper readings.
>
> Don't dismiss my answer. The engine in my TR6 is indeed FI, with handmade
> headers. The O2 sensors are mounted on the very top of the collector.
> Click on the following link: http://www.bowtie6.com/repairs/cam54.jpg and
> that shows a pic of the engine in my TR6. You can see on the extreme
> bottom
> the header on the passenger side. You can see the O2 sensor sticking up
> from the top of the collector.
>
> In your case, I realize the bung cannot be welded on the top of the
> exhaust
> manifold like I did on mine. However, the O2 sensor can be placed on the
> pipe that attaches to the end of the manifold.
>
> Joe
> '72 TR6 - CC77169
> http://www.bowtie6.com/
>
> -----Original Message-----
> From: 6pack-bounces+grant=bowtie6.com@autox.team.net
> [mailto:6pack-bounces+grant=bowtie6.com@autox.team.net] On Behalf Of John
> North
> Sent: Thursday, March 27, 2008 09:04
> To: Triumph 6 Pack
> Subject: [6pack] 02 sensor locations
>
> Where is the best place to locate sensors... Nelson Reidell suggests
> in the middle of the down pipes. I have the 76 double pipe system,
> so I guess I need two sensors and a switch to get readings off both
> carbs. Any suggestions or advice?
>
> John North
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--
Chuck Arnold
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