JTDm - Downpipe Lambda sensor thread/socket size? - Alfa Romeo Forum
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(Post Link) post #1 of 4 Old 02-08-16 Thread Starter
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JTDm - Downpipe Lambda sensor thread/socket size?

Anyone know if this is a simple standard size?

The mounting boss in my decat pipe sits the lambda sensor pushed hard up against the AC compressor, to the point that it's worked a nice big dent into the body of the lamda sensor... Tried adjusting the position of the decat pipe by rotating it a little, but there's just not enough wiggle room when it's all nipped up tight and leak free!

I've had a bit of a slow rev pick-up over the last few weeks/months.. Feels like a dirty MAF sensor, but knowing that I've got a fouling lambda I want that sorted before I go chasing the MAF...

Gonna try and fit a spacer/adapter to angle it away from fouling on the compressor, just want to know if it's standard M18x1.5 thread?

Cheers all!

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Pretty certain when i put a bung in the decat pipe it was the standard M18x1.5 thread.
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I have a sensor in the garage, I'll measure it tomorrow for you.

I have the correct size lambda boss thats unused from a decat pipe I was going to get made but never did if you need one to relocated the poistion of your sensor.
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(Post Link) post #4 of 4 Old 03-08-16 Thread Starter
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Cheers guys - I'll get a 120 degree M18x1.5 adapter and see what I can do with it.

Jon - A welder I ain't, so a new boss won't be much use to me I'm afraid... Plus I'd hate to have the beautifully tig'd pipe hacked up with a new fiting in it... For the cost/hassle of removing the pipe, and getting someone else to mod it with a re-positioned boss etc.. I think I'd rather just have a go with the adapter first!
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