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Quick Question On Block Breather...Pic!


slownrusty

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The first gen system used the original PCV valve system... no flow control valve... and a pop filter/breather on the top vent...

 

The top vent leaked a decent quantity of oil during track use.. I would come into pits and always smell raw hot oil.. first on the headers.. then I moved the top breather to another location... it still made a mess wherever it was located... obviously I was not achieving vacuum during full throttle.. to make it worse I was dealing with the mess the oil vapors would leave wherever the breather was located... I was also not pulling enough vac to properly vent the fuel tank vapors...

 

The second gen system used an oil recovery tank.. but I could not locate it to allow drainback into the crankcase(nasty looking stuff too)... it still did not ever really pull a vacuum on the crankcase... just barely a little flow at idle or part throttle...

 

The third and fourth gen systems were an attempt to actually develop a slight vacuum to vent the fuel tank and make use of the original flow control valve...

 

The fourth gen(current) system vents all fuel vapors from the tank and dumps them right into the PCV valve... the exhaust venturi pulls the most air when the PCV system pulls the least amount of air... the entire system maintains a very steady slight vac on the crankcase under ALL CONDITIONS.... and the messy oil vapors are dumped into the exhaust.. and keep my engine bay clean enough to eat off of...

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Preith' date=' you're right, it's illegal. Not too important to me, as I'm not going for a national championship anyway. If I did decide that my car was of that caliber I could always retrofit on some drip rails and the change out the rest of the illegal stuff so that I could run legally.[/quote']

 

We're getting a bit off subject here, but I wouldn't be too concerned about the drip rails. I have a hard time beleiving you'd be protested for it. Only if you were extremely competive and your arch rival had a severe ego problem. It's not as if you're gaining any advantage by removing them, other than aestetics. One could argue aero, but IMO not at the speeds in solo II. I'm fairly certain that stupid rule has already been removed from GT2. If worse comes to worse, you could write the competition board. You'll be surprised what you can accomplish.

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If you hook a tube up to it and dump it into a can you'll see that stuff does come out of there. When it coagulates it looks like nasty blown headgasket milkshake oil.

 

I guess the drag racing strips aren't too particular, but on a road racer you can't just dump that stuff on the ground. You have to have a functional PCV or a catch can. I think this is also the reason that the exhaust setup is illegal, BTW.

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