Mids_s2

Would I be able to weld a stainless boss into my cast elbow or will it crack?

Thanks Ben

paul-h

Cast to cast has to be welded by correct procedure as you will probably know, not too sure about stainless to cast though! Depends how it's done and what method you use.

Turbosimpsons

iTrader: (3)

You'd probably be better drilling and tapping it.

luke19790_3

weld it lower down, on the exhaust

Mids_s2

Good thinking I may drill and tap it, as a hole has to made anyway, maybe a bit over kill drill it tap it then tack weld it with mix metal rods.

Thanks Ben

studabear

Fit it in the down pipe. much simpler

Mids_s2

May have to yet.

Cheers Ben

Cragrat

iTrader: (4)

Sorry to hack thread but is there a preferred/optimum location for the lambda on a yb downpipe?

luke19790_3

on the cvh i think it needs to be near the sump

Mids_s2

Im not 100% but think the closer the turbo the better the quicker it will warm up and more accurate it will be, think the T34 had a lambda boss cast into the exhaust housing?most use the downpipe just after where exhaust joins turbo.

Thanks Ben

Rob_DOHC

iTrader: (4)

No mate, wideband lambda's don't need any where near the heat narrow band sensors do. The higher the hear, the lower the sensor life. I have mine fitted at about sump level, however other still fit them further back with good results.

Delay is minimal and you won't gain anything from mounting it on the elbow other than short sensor life.

An EGT sensor on the other hand could go there.

Rob,

Mids_s2

Ok cheers I'll put it in the downpipe.

chaffe

or make a sample pipe for going up the lum if your just using it for tuning

xr2wishy

iTrader: (2)

run lambda in down pipe, just account for the few milliseconds delay.
i run mine behind he sump on the sytsem on the zetec turbo.

Rogeyboy

iTrader: (2)

Mine behind the sump too, mild steel bung in a stainless system - not ideal for strength but it works and will do until i get a 3" system and stainless bung!
My Innovate WB gauge heats itself for 20secs or so before taking any readings, also Innovate state that it should be mounted just before the backbox for optimum sensor life!