The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Amal, Carburation, Fuel => Topic started by: pedrochapala on 22.08. 2014 19:20

Title: air filter for 626 concentric
Post by: pedrochapala on 22.08. 2014 19:20

 i only have room for something that is 1 3/4 inches thick and 2 3/4 inches across. any suggestions? i was also thinking of a rad hose clamped on with some sort of filter beside the oil tank. right now i have a short bell mouth with double screen but that ain't enough to keep the dust out.

Title: Re: air filter for 626 concentric
Post by: morris on 23.08. 2014 21:19

Hi Pedro, having the same problem as you. The plunger came with a 928 concentric with an open inlet, not even a screen to at least keep the rocks out.
I've been looking at every jumble, but couldn't find anything that would fit. The only thing that goes on is a short bellmouth with a gauze. Thinking about modifying that one with a second screen and some foam pad sandwiched between them.

Title: Re: air filter for 626 concentric
Post by: Triton Thrasher on 24.08. 2014 12:43

Does nothing here fit?:

http://www.knfilters.co.uk/search/univ2.aspx?id=S0012 (http://www.knfilters.co.uk/search/univ2.aspx?id=S0012)

Use a proper air filter, or no filter. Gauze over the inlet is useless. It restricts flow, causing over-rich mixture at high flow and it doesn't stop the particles that cause wear.

Title: Re: air filter for 626 concentric
Post by: morris on 26.08. 2014 08:31

By chance came across this site;

http://ramair-filters.co.uk/motorcycle

They have some kind of sock pullover type. Might work

Title: Re: air filter for 626 concentric
Post by: pedrochapala on 26.08. 2014 21:09

i have a short bellmouth with screen like you morris and had a finer screen install below the main screen. trouble is that there is lots of dust around here and i suspect that that is one of the reasons my plugs keep getting fouled and it sure ain't good fer my new valves and rings. my supplier in abq attempted to make me a pancake which hasn't arrived yet. he said if it doesn't work,i don't have to pay him. now that is great service!

Title: Re: air filter for 626 concentric
Post by: duTch on 27.08. 2014 07:41

 I'm guessing you have a iron head..?  If so, that makes it marginally less hard, but that pancake might be the go, but theoil tank might still interfere. Whatever you fit, it might mess up the jetting a bit too

Title: Re: air filter for 626 concentric
Post by: Triton Thrasher on 27.08. 2014 12:04

Quote from: pedrochapala on 26.08. 2014 21:09

i have a short bellmouth with screen like you morris and had a finer screen install below the main screen. trouble is that there is lots of dust around here and i suspect that that is one of the reasons my plugs keep getting fouled and it sure ain't good fer my new valves and rings. my supplier in abq attempted to make me a pancake which hasn't arrived yet. he said if it doesn't work,i don't have to pay him. now that is great service!

Dust doesn't foul plugs. Obstructed intakes can.

What sort of filter was on A7s exported to dusty countries?