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Old 21-11-2011   #1
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Mk2 1.2 16v Exhaust Manifold/CAT

Can anyone tell me if they know of 2 type of manifold for this car? The one on my car has two lamba sensors, one pre and post CAT; but I think I may have seen a version with one lamba sensor for the same type of car.
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Old 21-11-2011   #2
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Re: Mk2 1.2 16v Exhaust Manifold/CAT

I think some of the early ones came with 1 lambda, hence 1 boss.
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Old 21-11-2011   #3
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Re: Mk2 1.2 16v Exhaust Manifold/CAT

usually up to y reg only have one lambda hole
of course you can always buy the captive nut from an exhaust supplier to stick in yours or chop it out of your failed one and weld it in
main thing is to make sure the replacement s/h manicat doesnt rattle when shook which will suggest its flubbered
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Old 21-11-2011   #4
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Re: Mk2 1.2 16v Exhaust Manifold/CAT

Why are you asking, anyway?
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Old 21-11-2011   #5
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Re: Mk2 1.2 16v Exhaust Manifold/CAT

Looking to get a replacement one as mine is blowing as has a crack in the manifold and alone the weld between the manifold and CAT.
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Old 22-11-2011   #6
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Re: Mk2 1.2 16v Exhaust Manifold/CAT

Quote Originally Posted by s and b View Post
usually up to y reg only have one lambda hole
of course you can always buy the captive nut from an exhaust supplier to stick in yours or chop it out of your failed one and weld it in
main thing is to make sure the replacement s/h manicat doesnt rattle when shook which will suggest its flubbered
Thats what I am thinking of doing, does anyone know the size of the nut the sensor goes into?
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Old 22-11-2011   #7
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Re: Mk2 1.2 16v Exhaust Manifold/CAT

They're usually 18mm (at a guess 1.5 pitch). An oil drain plug?

If disregarding the second lambda, it's usually advised to wrap it in silver foil.
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