Banned for not
following the site
Join Date: Feb 2008
Location: United Kingdom
that is the correct inlet stub manifold for the 105, it shouoldn't have the screws tapped out for the solenoid (it has a different part number than the 120) also there should be a different manifold gasket fitted than the 120, which is obviously fitted because there is no oil spurting from the hole. So this IS a 105 in true form, WHICH DOES NOT HAVE A VARIATOR, UNLESS some cowboy has fitted a 120, 1.8 or 2.0 head to it, used the old manifolds, replaced the inlet gasket and the noise is actually the variator, in which case replacing it is pointless, because, A: it's not geting oil so it's not going to work anyway, and B: the new one will wear out in a few month from running dry.
If you would like, I can modify an old variator to use as a blank in place of the rattly one you currently have and then you can fit that instead of a normal one, this will get rid of the knocking if it is caused by that, but I would think your engine has a lot of worn parts in it and as the oil pressure builds it is that which is silencing the engine.