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Crank case breathers https://www.ausmini.com/forums/viewtopic.php?f=2&t=8755	Page 1 of 1

Author:	Lillee [ Sun Jul 03, 2005 11:13 pm ]
Post subject:	Crank case breathers
Does anyone know what the part number is for a K&N vent filter for a standard clubman tappet cover breather filter is? Something like this: The part numbers are here but which one fits? http://www.knfilters.com/vent.htm

Author:	nuclear_mini [ Mon Jul 04, 2005 12:05 am ]
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if you measure the size opening you need i can find out from work for you... we stock all sorts of K&N breathers.... (I work down at revolution rcegrear in the gong off and on but am there at least 1 day a week)

Author:	willy [ Mon Jul 04, 2005 12:07 am ]
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Can you get me a good price on a suede RPM steering wheel?

Author:	nuclear_mini [ Mon Jul 04, 2005 12:09 am ]
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yeah we have our clearance sale on now... if you send me the name or code (or description) of the one you like I should be able to help you out... we do a lot of momo stuff as well...

Author:	willy [ Mon Jul 04, 2005 12:31 am ]
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Oh awesome! Its like black, suede, 3 spoke i think steering wheel. And it says RPM in yellow. Its very nice. Racey type.

Author:	drmini in aust [ Mon Jul 04, 2005 7:43 am ]
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Chong, a filter on there may stop bugs getting in- but the air (& oil fumes)flow is outwards! But if you are going to fit a PCV valve to the manifold, (as you told me) connected to the side cover canister- forget about using a filter on the rocker cover breather. It'll suck air thru the system and run lean.. Just plug it like mine is.

Author:	FatMaserati [ Mon Jul 04, 2005 11:06 am ]
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Hmmm... At the moment, my crankcase breather doesn't have one of these filters on it (though I was thinking of getting one), but it's just got a rubber hose on it leading behind the radiator, wehere andy fumes get blown out by the radiator fan. That was how Cono at Minicraft set it up... Previously, it had a PCV valve coming from the crankcase breather, going into the carby, but Cono removed it when I had the engine rebuilt. I can only think that he did this becasue it wasn't a good idea. It wasn't my idea orignally though, I bought it like that. Doc, what do you reckon is the best thing to do with the crankcase breather? You seem against the filter idea...

Author:	Lillee [ Mon Jul 04, 2005 11:12 am ]
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Doc and I have been discussing this very topic this morning. I think I will give Vizard's Evacusump system a try. This means plugging up the rocker cover breather and plumbing the tappet cover breather into a PCV valve connected to both intake manifolds (actually Vizard says it's best from the exhaust manifold, but intake is ok too, and is much easier to do). Anyway what this does is creates a negative pressure in the crank case which is good for rings etc (you have to read Vizard). Will let you know how it goes...

Author:	fuzzy-hair-man [ Mon Jul 04, 2005 11:22 am ]
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68Delux wrote: Doc and I have been discussing this very topic this morning. I think I will give Vizard's Evacusump system a try. This means plugging up the rocker cover breather and plumbing the tappet cover breather into a PCV valve connected to both intake manifolds (actually Vizard says it's best from the exhaust manifold, but intake is ok too, and is much easier to do). Anyway what this does is creates a negative pressure in the crank case which is good for rings etc (you have to read Vizard). Will let you know how it goes... Vizard's system does both with a anti back fire valve thingy in the exhaust, Idea was that the exhaust supplies vacumn when there is no vacumn at the inlet manifold and vise versa It also had a oil trap and return thingy some where there too. Oil return must be above the oil level in the sump otherwise you suck the oil outa the engine It sounded like a good idea and apparantly really helped the mini's oil leak issue. I can't remember more about it might have to read it again

Author:	Lillee [ Mon Jul 04, 2005 11:30 am ]
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Yeah I just read it all last night. The tappet cover breather has an oil/air separator built in (the standard long tube thing) so no problems there. Hence why I am connecting it via the tappet cover breather into the intake manifold, if you did it as the book says via the rocker cover breather, I will need to install a separate oil separator. Exhaust or Intake, both create a vacuum right? This is how Lillee's engine was set up for over a year with a PCV to one side of the intake. This time I will custom hook up both sides of the intake for even air on both sides. Should look pretty good as I have some ideas

Author:	fuzzy-hair-man [ Mon Jul 04, 2005 11:39 am ]
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68Delux wrote: Exhaust or Intake, both create a vacuum right? Yep both make vacumn but at different times, I can't quite remember but I think it is under part throttle there is inlet vacumn but little or no exhaust vacumn as there is less exhaust flow. At full throttle there is high exhaust speeds which creates a vacumn from the exhaust part of the system, I can't quite remember though

Author:	FatMaserati [ Mon Jul 04, 2005 3:21 pm ]
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That Evacusump setup kinda sounds like what I had, though I don't think that my rocker cover was plugged up properly, though it was blocked a little. I might read more into this... Very interesting.

Author:	benjamin [ Mon Jul 04, 2005 3:43 pm ]
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what book is this in cause i just ordered vizards tuning bls a series engine is tha the one?

Author:	fuzzy-hair-man [ Mon Jul 04, 2005 4:29 pm ]
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Yer I think so, It's the one with the yellow cover, it's towards the back somewhere that he talks about it

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