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Breather Filters


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#16 minidan

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Posted 16 April 2010 - 08:50 PM

pictures? please samsernie

#17 samsfern

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Posted 16 April 2010 - 08:56 PM

here ya go, this is when i first got the mini, they are shown with the hose from the engine breather bit, going to the filter then to the engine, which if im right means there wont be any vaccuum, but now the hose bit from the engine goes to the filter and the breather bits on the carbs are blanked off, ill get some pictures tommorow i you like? i am also now running with a breather takeoff coming from the rocker box to one of the filters, soon to all go into ally catch tanks (when i can be bothered to make them, lol) though...

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Edited by samsernie, 16 April 2010 - 09:03 PM.


#18 WiredbyWilson

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Posted 16 April 2010 - 09:26 PM

Same here, except I have a weber carb with no where to "aim" the oily fumes >_<


whats wrong with piping them into the air filter


I physically can't - i have soak filters over the trumpets!

#19 WiredbyWilson

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Posted 16 April 2010 - 09:29 PM

If you don't have suction on the crankcase - you WILL have oil leaks and eventually a slipping clutch. Piping in the air cleaner will just plaster it with messy oil! I can only suggest a small hole is drilled in the weber inlet manifold *(I used 1/8" diameter) and the breather hose connected to that. These breather filters are a big waste of money!

I actually drilled and tapped the manifold for a servo take off - then filled the take-off with plastic metal, and then drilled a 1/8" hole through the filling.


*touches wood* as of yet I have no oil leaks as such - but it has only done about 1000 miles in a year!

So it looks like i will need 2 pairs of vac pipes put in the manifold as I don't want it to breathe through only one branch of the carb.

Any suggestions what to use to fit vac pipes into a steel manifold - could i simply have som lengths of copper brakeline silver soldered into it?

#20 samsfern

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Posted 16 April 2010 - 09:34 PM

i never ran the breathers into the carb/manifold on any of the minis ive had, my last mini just had a hose which ran from the engine to underneath the car, done 10k miles with this engine, which i built, not easy miles either and never had any serious oil leaks, all classic cars leak oil, its normal!

Edited by samsernie, 16 April 2010 - 09:36 PM.


#21 Yoda

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Posted 16 April 2010 - 09:43 PM

Sam, I will have a chat with you at our meeting about this. rather than join an argument on here. Yes i ran the race cars with filters, but for road use, i have mine plumbed in to the intakes on my carbs.

Edited by customcart, 16 April 2010 - 09:44 PM.


#22 samsfern

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Posted 16 April 2010 - 09:48 PM

just my opinion dude, lol

#23 minidan

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Posted 16 April 2010 - 09:58 PM

i need more info on this

how do you plumb the breathers into the carb and also, why is it not already like this on our engines? ie : why are we arguing about how or why it should be done.




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