Breather pipers running off the carb

[billingtond]

Hi I have two breather pipes running of each carb, or are they breathers they seem to be on the air inlet side. Question is do they suck air, if so should there be a in line filter, as mine have two rubber pipes running to the driver's wing, which are then conected to to steel pipes runung do the in side of the wheel arch, I cannot see any in line filters. Thanks Dave

[olliebarrett_92]

Hi,
Im pretty sure that they are overflow pipes. Do you have zenith/stromberg carbs?

[billingtond]

Hi, Strom carbs

Thanks for the help

[Bsfaxle]

If you have the CD175 Stromies the breather pipes that you may be talking about (3/8" / 10mm dia approx. Butterfly upstream side ) are the fuel bowl chamber vents. Originally they ran to the emissions charcoal canister in the front , terminal "C". I've seen them rerouted to the air cleaner. A fitting is already there 3/8 " and some to atmosphere as yours seem to be. Obviously their job is to breathe (in and out) for admission and removal of fuel from the chambers in accordance to engine supply and demand

[billingtond]

Thanks, for the heads up

[Bsfaxle]

I read my previous post the other day and it seemed like a whole lot of gooblydegook ! What I was trying to say in simple English is that the
pipes before the butterfly(s) are float chamber breathers. Cheers Ron