Pictures of exhaust manifolds

[garyc]

Bit of a strange one. I'm after a picture of a BTB small block exhaust manifold with a lamda sensor on there. I want to know what position it is in. Failing that any small blockmanifold with a lambda sensor will probably work.

[Adam]

"Iirc" the small block btb i saw, had the lambda boss in one of the primaries(not good)
Weld the boss in on the side of the collector, or the top.
Not the bottom.

[garyc]

Yeah, I could still do with a picture though.

[Stuart]

there isnt "really" a huge issue with the lambda boss in a primary. Its not ideal but there are no majro problems with doing so... Just dont use number 3 lol

[craig green]

The BTB manifolds have the lambda in a bad place anyway, its on 1 of the primaries just after the exh port. Its there so that the std Lambda cable will reach.

You want it in a position where it can monito the gas from all 4 cylinders & not just 1.

I'll be running mine as it is at 1st but will endeavour to lengthen the cable & have another boss welded further down.

http://i30.photobucket.com/albums/c323/turbocraig/NovaGSi-WIP_pics/Progress-sale023.jpg

http://i30.photobucket.com/albums/c323/turbocraig/NovaGSi-WIP_pics/work_in_progress112.jpg

http://i30.photobucket.com/albums/c323/turbocraig/NovaGSi-WIP_pics/work_in_progress111.jpg

[Adam]

there isnt "really" a huge issue with the lambda boss in a primary.
There is should that one cylinder primary go rich for some reason(no spark), lambda then picks it up, and the ecu leans out the whole engine?

[Stuart]

I guess it truely depends if you are running closed loop control. Since MOST people dont, its not a massive issue (remember on WOT its open loop fuelling too)

[Adam]

When "cruising", it could become a problem.