Cardinal Neutral Newbie January 19, 2003 Share January 19, 2003 Does anyone know how to DIY an open pod filter piping? I'm basically looking for a straight 3 inch diameter pipe of length about 20cm with an inlet to connect the rubber hose at the side of my cam cover (what is that rubber hose for?). And idea where's a good place to look for something like that? ↡ Advertisement Link to post Share on other sites More sharing options...
Saaber Neutral Newbie January 19, 2003 Share January 19, 2003 The 3' diameter pipe can get at most hardware shop, will cost only a few dollars.... As for the rubber hose at the side of the cam cover, that is the oil breather oulet for releasing excess oil pressure and to leak off the oil fumes during high rev.. Link to post Share on other sites More sharing options...
Lester Neutral Newbie January 19, 2003 Share January 19, 2003 Hi there Cardinal I've got a 3" piping bout 1 meter long. Grey in color. It is flexible and guess it's suitable for your need. Lemme know if you are interested. Can send you the pic if you need. Regards Lester Link to post Share on other sites More sharing options...
Cardinal Neutral Newbie January 19, 2003 Author Share January 19, 2003 So the 3 inch pipe will not be connected to the hose? It's ok to leave that hose dangling or should I do somethign else with it? Link to post Share on other sites More sharing options...
Cardinal Neutral Newbie January 19, 2003 Author Share January 19, 2003 what is the pipe made of? If it's convenient, maybe can PM me the pic or something.. Link to post Share on other sites More sharing options...
Max1218 1st Gear January 19, 2003 Share January 19, 2003 hey bro, I have a friend which might have the material which u need.......check his website out:http://community.webshots.com/user/zippy08 for the piping......an aluminium piece.. my ES is done by him....... my pipe is insulated by a rubber insulate........that's why it is b;ack in col.... Link to post Share on other sites More sharing options...
Cardinal Neutral Newbie January 19, 2003 Author Share January 19, 2003 yours is car no 14 right? what I means was to use the piping to replace the air box, and put a cone filter at the end of the pipe. Yours is the piping to replace the resonator. But should be quite similar... yeah, have seen his site at the SHC forums.. Link to post Share on other sites More sharing options...
Saaber Neutral Newbie January 20, 2003 Share January 20, 2003 Yes it is alright to leave it dangling...if not you can connect it to a oil catch tank or put a small filter to it..... Link to post Share on other sites More sharing options...
Cardinal Neutral Newbie January 20, 2003 Author Share January 20, 2003 Yeah, I read some places that says it's not good to have breather filters (although they look cute) cos the design of the breather inlet sometimes doubles up as ventilation for the crank case. depending on whether the flow is in or out of the breather hose. Then again lots of ppl install it anyway.. dunno which one to believe But thanks for your inputs! Link to post Share on other sites More sharing options...
Saaber Neutral Newbie January 20, 2003 Share January 20, 2003 Positive Crankcase Ventilation (PCV) Positive Crankcase Ventilation is a system that was developed to remove harmful vapors from the engine and to prevent those vapors from being expelled into the atmosphere. The PCV system does this by using manifold vacuum to draw vapors from the crankcase into the intake manifold. Vapor is then carried with the fuel/air mixture into the combustion chambers where it is burned. The flow or circulation within the system is controlled by the PCV Valve. The PCV Valve is effective as both a crankcase ventilation system and as a pollution control device. PCV systems can be described as either open or closed. The two systems are quite similar. However, the closed system in use since 1968 is more effective at air pollution control. The systems differ in the manner in which fresh air enters the crankcase and excessive vapor is expelled. Open PCV Systems The open system draws fresh air though a vented oil filler cap. This presents no problem as long as the vapor volume is minimal. However, when the crankcase vapor becomes excessive it is forced back through the vented oil filler cap and into the open atmosphere. The open PCV system, though successful at removing contaminated vapors from the crankcase, is not completely effective as a pollution control device. Closed PCV Systems The closed PCV system draws fresh air from the air filter housing. The oil filler cap in this system is NOT vented. Consequently, excess vapor will be carried back to the air filter housing and from there into the intake manifold. The closed system prevents vapor, whether normal or excessive, from reaching the open atmosphere. The closed system is very effective as an air pollution control device. The PCV Valve The most critical part in the PCV system is the flow control valve, commonly referred to as the PCV valve. The purpose of the PCV valve is to meter the flow of the vapor from the crankcase to the intake manifold. This is necessary in order to provide proper ventilation for the crankcase, while not upsetting the fuel/air mixture for combustion. Blow-by gases and vapor should be removed at about the same rate they enter the crankcase. Since blow-by is minimal at idle and increases during high speed operation, the PCV valve must control the flow of vapor accordingly. The PCV valve is designed to compensate for the engine ventilation needs at varying engine speeds. It is operated by manifold vacuum which increases or decreases as engine speeds change. For example, at low or idle engine speeds manifold vacuum is high. This pulls the plunger to the extreme forward position, or manifold end of the valve. Due to the shape of the plunger, vapor flow is reduced to a minimum. The low rate of the flow is adequate for ventilation purposes and will not upset the fuel/air mixture ratio. At high speeds manifold vacuum is decreased. The plunger is only drawn to a point about midway in the housing. This allows a maximum flow of vapor. Since the engine needs more fuel/air mixture at high speeds, the introduction of more vapor does not affect performance. In the event of a backfire, pressure from the intake manifold forces the plunger to the closed or engine-off position. This prevents the backfire flame from reaching the crankcase and exploding the combustible vapor. A neglected PCV system will soon fail to function and the result can be expensive as well as troublesome for the car owner. If the crankcase is not adequately ventilated, the motor oil will quickly become contaminated and heavy sludge accumulations will begin to form. Internal parts, not protected by the motor oil, will begin to rust and/or corrode due to the water and acids that will become trapped within the crankcase. If the PCV system is not functioning properly, the flow of crankcase vapor into the intake manifold will not be properly metered. This, in turn, will upset the fuel/air mixture for combustion and cause rough idling or even stalling of the engine. Furthermore, intake and exhaust valves, in addition to spark plugs, may well be burned and rendered useless, prematurely affecting performance and requiring expensive repairs. To assure trouble-free performance of the PCV system and, in turn, the engine and vehicle, routine maintenance of the PCV system is absolutely recommended and required. A PCV valve should never be cleaned and placed back into service. Cleaning a PCV valve will result in a clean PCV valve; not a new PCV valve. There are contaminants that will remain in the PCV valve that can never be flushed out. Additionally, there is an amount of wear that will be experienced by the spring that cleaning cannot replace. The recommended replacement intervals are a maximum of 12 months or 10,000 miles (16,000 km). Since vehicles and operating conditions vary, the valve may have to be serviced more frequently. If it is suspected that the valve is sticking or if there is evidence of sludge, the valve should be replaced. All hoses or tubes used in the PCV system should be cleaned and inspected. If any cracks or breaks are noticed in the hose, it should also be replaced. All hose connections should be inspected to assure an air-tight seal. Proper servicing of the PCV valve system will help reduce overall vehicle emissions Link to post Share on other sites More sharing options...
Esky Neutral Newbie January 20, 2003 Share January 20, 2003 Hmmm... servicing the PCV valve? I've NEVER heard about this maintenance item before! So do you replace the PCV periodically? Link to post Share on other sites More sharing options...
Saaber Neutral Newbie January 20, 2003 Share January 20, 2003 No, only when it is spoiled.... Link to post Share on other sites More sharing options...
Vtim 3rd Gear January 20, 2003 Share January 20, 2003 good write-up Eddie Link to post Share on other sites More sharing options...
Saaber Neutral Newbie January 20, 2003 Share January 20, 2003 Thanks Link to post Share on other sites More sharing options...
Vtim 3rd Gear January 20, 2003 Share January 20, 2003 Keep it up, you're doing a good job at it Link to post Share on other sites More sharing options...
Saaber Neutral Newbie January 20, 2003 Share January 20, 2003 Maybe can compile a MCF General car knowledge and repair manual cum good buys from all the articles here..... Link to post Share on other sites More sharing options...
Vtim 3rd Gear January 20, 2003 Share January 20, 2003 I vote you to be the Chief Editor Link to post Share on other sites More sharing options...
Saaber Neutral Newbie January 20, 2003 Share January 20, 2003 No lah...there are other more capable people here maybe only one of the technical consultant, But design and layout, i certainly can do lah... Maybe Maybe Admin is more suitable for Chief Editor post ↡ Advertisement Link to post Share on other sites More sharing options...
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