I'm asking this in the boost forum because you all are probably more familiar with needing a reliable wide band o2 sensor. I'm replacing my exhaust manifold with an aftermarket one, which, like some of the later models, have the built-in sensor bung. Is this a viable location to run a wideband sensor? I realize it is pretty close to the hottest air, and I also realize it's not an optimal location. Motly I'm wondering if it will work well enough to properly tune to avoid detonation, and well enough to avoid constant replacement.

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1970 Plymouth Duster, 198 Slant Six, Super Six setup w/ EI conversion

http://www.semisynthetic.net/kill-9/gal ... p?album=34

I see there is a Heat-Sink Bung Extender (HBX-1) type of product that can provide for an extension of the sensor a little further out of the heat's path. It seems to be redirecting some of the exhaust into a 90 degree elbow. I suppose this could help. I would like to hear from anyone who has done this with a wide band sensor.

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1970 Plymouth Duster, 198 Slant Six, Super Six setup w/ EI conversion

http://www.semisynthetic.net/kill-9/gal ... p?album=34

I have never run a wide band sensor, but I don't see a problem. A O2 sensor has to be hot, to operate. That is why newer cars use heated sensors, to get them to temperature quicker. Why do you think there would be a problem using the factory location?

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Widebands need a specific temp range, too hot and it throws them off. The heater within them is calibrated and controlled by whatever computer/gauge is driving them.

I don't think the sensor will live long in the stock location. You probably still have raw fuel and flames at that point. If there's no room up front why not put it downstream the turbo? It will be just as happy by the muffler really. Innovate even makes a clamp to mount the sensor at the tailpipe exit, similar to what a smog machine would do.