I have purchased a 1600 CVH engine with a Weber carb fitted. It has stamped on the side Weber 23-21. Is this the size of the chokes ? I need to order an air filter for it but what do I ask for. I have uploaded a picture to my photo archive. I need to identify it as I am about to go for my SVA.
Thks Bill.

I may well be able to save you the bother looking on that
I was intending to fit a carbed 2l dohc ,so I bourght a piper cross generall px3000 filter and fitted it....Looks like the same mountings...Its only done 200 miles in the donor..Im not going to fit it now..Cost me £40 ..Yours for £20 +£2 postage if any good???????????
regards warren