 914 engine oil breather, Is it really necessary |
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| recko911 |
 Feb 17 2011, 12:05 AM
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#1
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Member  Group: Members Posts: 93 Joined: 6-February 06 From: Los Angeles, CA Member No.: 5,535  |
Is a oil breather filter really necessary on the engine case.
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| McMark |
Feb 17 2011, 12:34 AM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Short Answer: Yes
Long Answer: You need to vent your crankcase. And to avoid messes and environmental impacts, you should filter your crankcase ventilation. The best solution is to filter the vapors, drip drain it back into the case, and connect the filtered vapor to the intake so that any missed particles can be burned in combustion. |
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| recko911 |
Feb 17 2011, 10:14 AM
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#3
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Member Group: Members Posts: 93 Joined: 6-February 06 From: Los Angeles, CA Member No.: 5,535 |
QUOTE(McMark @ Feb 16 2011, 10:34 PM)  Short Answer: Yes Long Answer: You need to vent your crankcase. And to avoid messes and environmental impacts, you should filter your crankcase ventilation. The best solution is to filter the vapors, drip drain it back into the case, and connect the filtered vapor to the intake so that any missed particles can be burned in combustion. Do you have any pictures of the set u I have dual carbs. |
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| 7275914911 |
Feb 17 2011, 11:02 AM
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#4
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Hummmm!!! Group: Members Posts: 756 Joined: 7-May 08 From: Mid-South Member No.: 9,028 Region Association: South East States 
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http://www.914world.com/bbs2/index.php?sho...=103161&hl=
Here is a good thread on the subject...I vented back to Filler neck base using CFR Can..... Good Luck |
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| gothspeed |
Feb 17 2011, 11:41 AM
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#5
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Senior Member Group: Members Posts: 1,539 Joined: 3-February 09 From: SoCal Member No.: 10,019 Region Association: None |
Definitely vent! Also make sure you use the factory check-valve, it keeps the crankcase from building too much pressure, which will help prevent oil leaks.
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| ChrisFoley |
Feb 17 2011, 12:09 PM
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#6
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I am Tangerine Racing Group: Members Posts: 7,928 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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QUOTE(gothspeed @ Feb 17 2011, 12:41 PM) Definitely vent! Also make sure you use the factory check-valve... Only when the factory injection is retained should the stock valve be left intact. We gut the PCV valve on every breather installation, but still use it as a connection point in most cases. The stock valve is a restriction to good ventilation. |
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