Rover Sports Register Forum

Apart from 1940-47 6-cylinder cars and the 1935-38 14hp, all 1935-47 Rovers had an apparently similar air filer. However, there are actually five different ones.

01270 has the bypass connection to the bottom (on the others it is to the side) and fit 1935/6 cars
04923 has its bracket 3.5" from the mesh inlet end (i.e opposite end to the swan-neck) and fits the 6-cyl cars.

Of the other three, one is for the 37/8 10 & 12hp, another for the 39-46 10 & 12hp with SU carb, and the third for 46/7 10 & 12hp with Solex carb. But how does one identify them?

One has its bracket mounted by two bolts 5" from the inlet end.
One has its bracket mounted at an angle to the main body, by two bolts at different distances from the end.
I can only assume that the Solex one is physically similar to one of the above and is perhaps different internally?.

So my question is can some members with 10 & 12 hp cars please check the arrangement of the bracket on the underside of their filter so we can establish which is the correct filter to be sent abroad for a 1946 car. I'll be happy to provide photos of the different filters if my descriptions need explanations.

Thanks, Mike Evans

The master parts list shows this:

p.n. 50234
This is confirmed by what the instruction manual of the 10 and 12 for cars numbered 6110048, 6210051 and 6230001 onwards shows:

Thanks luli, but it doesn't help. The 'can' is apparently identical to all the other cans mentioned in my list, it is the position of the holes that fix the bracket (79) to the can that is different in them. As I mentioned, I've identified the 35/6 one and the 37-39 6-cylinder one, it's just the three used on 37-47 10 & 12 hp cars where I have them, but don't know which is which.

The distance of these holes from the front of the can (the swan neck side) is 1.5", on my 46 and 47 cars.

Thanks luli.
so that makes the one with both holes 1.5" from the swan neck end either 50284 or 07399 for 1939-47 10/12hp cars, and the one with the bracket at a skew to the can, held on by bolts at different distances from the end 06903 for 1937/8 10/12hp cars. I now know which one to supply to a Rover owner in Israel.
It's difficult to measure, but I reckon the distance from the bracket fixing hole (to the rocker box) to the centre of the swan neck carb connection is 8.5" for the 50284 / 07399 set up, and 8" for both the 06903 set up and the 1935/6 filter, which of course uses a smaller cast ally carb connection in place of the steel swan neck. This is consistent with the change of manifold design that came in 1939.
Mike