[W126 Coupe] Regarding emission equipment on engines..

[Steve Lemberg]

Josh sez,


> Honestly, 90% of this stuff on top of the engine will be disappearing as

> soon as I have the engine up and running.  I'm going to swap to

> MegaSquirt EFI.  I'm just trying to figure out what has to be there to

> run properly.

> As far as the air pump part goes, the "new" engine doesn't even have the

> bungs on the exhaust manifold for them to plump in to, so I'm assuming

> that this engine didn't have that emissions system on it from the factory.

>


On the later engines the AIR injection is completely internal, the air pump
is plumbed through the block and heads directly to the exhaust.   There are
no air injection tubes in the exhaust.    The only tube on the exhaust is
the EGR.    The air tubes around the injectors are for the idle air not the
smog pump.    If you want to use an AIR injection pump (smog pump) for some
reason you could use an electric one remotely mounted.    However, you would
have to plumb it down stream of the O2 sensor using Megasquirt.

Steve