AFR Gauge on a Rover ?

They make a huge difference! I do need to weld a bung into Beryl's manifold. but the mini a friend and I are building to race is prepped to accept a wide band sensor. My feeling is that Beryl is a little rich at idle for a good mix at cruising. Or lean at cruising with a good mixture at idle. It would be fascinating to see if my gut reaction is correct...
 
quattro said:
They are very handy if you change your fuelling system
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Where did you weld your bung @quattro ?( Ooo Err missus!). My understanding is to have them close to the engine, but with a twin carb setup I guess you either use two sensors or have it down stream further, or You just use one and match fueling on the other carb.
 
sdibbers said:
Where did you weld your bung @quattro ?( Ooo Err missus!). My understanding is to have them close to the engine, but with a twin carb setup I guess you either use two sensors or have it down stream further, or You just use one and match fueling on the other carb.
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It used to be in the lower end of the collector on the NS manifold, when I had the four barrel carb , but now I use it as a sensor in the EFI system I have moved it back to just after the pipes come together under the back of the engine. The custom made y piece does bring the pipes together very quickly and are ceramic coated so retain their heat well.
 
quattro said:
It used to be in the lower end of the collector on the NS manifold, when I had the four barrel carb , but now I use it as a sensor in the EFI system I have moved it back to just after the pipes come together under the back of the engine. The custom made y piece does bring the pipes together very quickly and are ceramic coated so retain their heat well.
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That’s on a V8 right? So you get both carbs on a single bank because of the arrangement on the inlet manifold.
 
sdibbers said:
That’s on a V8 right? So you get both carbs on a single bank because of the arrangement on the inlet manifold.
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You would do, but I had a four barrel weber on there when I fitted the gauge.

I have seen people fit a bung on both sides, in the collectors so they can change the sensor from one side to the other.
 
quattro said:
You would do, but I had a four barrel weber on there when I fitted the gauge.

I have seen people fit a bung on both sides, in the collectors so they can change the sensor from one side to the other.
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Ah, the four barrel would simplify things. I like your idea of two bungs. I did wonder about just fitting two wide band sensors with a switch for front or rear carb. Seems the most reliable.
 
Try an Innovate WB with the probe you stick up the tail pipe - worked for me when I rebuilt the carbs. Got sensible values, and could see the results of mixture adjustments.
 
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