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wayne1234 |
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#1
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Member ![]() ![]() Group: Members Posts: 260 Joined: 6-April 09 From: indianapolis in Member No.: 10,238 Region Association: None ![]() |
Ok dual webber carbed 2.0, I think the PO had the head vents running to a T then to the oil breather near the oil cap... Is this right?? I did a search and now I'm really confused,,,,
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pbanders |
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#2
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Senior Member ![]() ![]() ![]() Group: Members Posts: 939 Joined: 11-June 03 From: Phoenix, AZ Member No.: 805 ![]() |
Note that even the Tangerine solution, which is the best one I've seen for carb setups, doesn't provide the same function as the factory system does. The factory system is a true Positive Crankcase Ventilation (PCV) system, that uses intake manifold vacuum to scavenge crankcase vapors. The Tangerine system (and other passive breather systems) depend on crankcase pressure alone to transport vapor to the system. The factory system uses an active PCV Valve mounted on the oil filler box to manage the system across a wide range of intake manifold pressures and crankcase pressures. There's a writeup on this system at my web page below.
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ME733 |
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#3
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Senior Member ![]() ![]() ![]() Group: Members Posts: 842 Joined: 25-June 08 From: Atlanta Ga. Member No.: 9,209 Region Association: South East States ![]() |
[quote name='pbanders' date='Jan 23 2010, 11:20 AM' post='1264867']
Note that even the Tangerine solution, which is the best one I've seen for carb setups, doesn't provide the same function as the factory system does. The factory system is a true Positive Crankcase Ventilation (PCV) system, that uses intake manifold vacuum to scavenge crankcase vapors. The Tangerine system (and other passive breather systems) depend on crankcase pressure alone to transport vapor to the system. The factory system uses an active PCV Valve mounted on the oil filler box to manage the system across a wide range of intake manifold pressures and crankcase pressures. There's a writeup on this system at my web page below................. (IMG:style_emoticons/default/popcorn[1].gif) .....THE INTERIOR of the air filter housing will have a negative pressure as the carburators....SUCK AIR. Therefore the tangerine system will work identical to the factory setup, providing positive crankcase ventilation....and as venting the crankcase is important, reguardless of RPM,s why would anyone want or need a pvc valve?. The easier the engine "breaths" the faster it will rev. up., and have (fewer leaks) which are mostly caused by excessive crankcase pressure. A very free breathing engine starts with some internal crankcase modifications. (IMG:style_emoticons/default/popcorn[1].gif) Murray |
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