Ultimate Street breather...?
65Pearl:
Quote from: Dave Rosique on September 10, 2010, 03:51:32 am
Quote from: Zach Gomulka on September 10, 2010, 01:36:57 am
Quote from: BeetleBug on September 09, 2010, 08:24:33 am
And why do people still breath from their valve covers?
The Porsche 912 did, but only from the 1-2 side. What's the harm?
Both valve covers were vented on Super 90's
Gents, what are then the suggested "optimum" spots from which one should connect to breatherbox?
I'd really like to learn something new. Good topic.
kingsburgphil:
For whats its worth, forty years ago we retained the stock road draft tube. And vented the valve covers with meter long 13mm hoses arched up and over the axles, with the ends wedged between the torsion housing and the pan. Cheap and effective before "puke boxes" became popular, though
I doubt race legal.
Currently I use 19 & 22 mm hose with a Berg breather....everything's bone dry so far. When I put the tin back on I'll probably use dual breathers
in the fender wells.
Jon:
Quote from: kingsburgphil on September 23, 2010, 01:48:34 am
For whats its worth, forty years ago we retained the stock road draft tube.
Last time I checked the size on that thing it was 16mm in diameter, and there is also that vent hose up to the air filter, that's another 10mm of ventilation on the stock engine.
If you were to replace these two with AN6 line you would need nine (9)!! hoses to have the same internal area... or five AN8.
It's hard make a bigger system than the vw already has...
65Pearl:
And why do people still breath from their valve covers?
Again, Please advice me, what are the better and suggested spots to do it?
BeetleBug:
Quote from: 65Pearl on September 24, 2010, 11:04:45 am
And why do people still breath from their valve covers?
Again, Please advice me, what are the better and suggested spots to do it?
You should vent where the pressure is created - your crank case. If you choose to vent your covers you will only open up a "highway" for the oil to move freely up to your heads. When the head(s) are filled up the oil will continue to follow the easiest route which is..... your breather line. Why? because the oil is not allowed back to the engine case through the 4 lines it should use (pushrod tubes) due to the pressure inside.
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