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This is my take on the airbox mod that so many people are doing and have done for years.It relates to all motorcycles that i know of that have a (smog pump)installed.After years of people removing the pump and plumbing the valve cover breathers directely to the lower crankcase breather then plugging the airbox thinking they are achieving more HP its a lie! One that over time will due more harm than good.How this lie has gone on for so long is beyond me!Lets start with the small very low elerctrical pump.This pump pushes cool fresh air into the valve cover,through a one way reed type valve or two which then vents itself usually atop the gear case then is returned to the airbox to be burnt through the engine itself.Its environmently friendly and helps cool your crankcase.
Now how would connecting all these hoses together be benificial to your engine,Well lets take a look, you are now sealing your crankcase vents shut great for 4wheeln not so much street use.What you have done is created is a minor vacume pressure fight within the crankcase.Which can cause gasget failures,higher internal temps,and advanced enginge wear!Emmission plates sound bad but they are not if you understand why they are there.I know this may be boring if your johnny hot rodder but give me a few more scennarios to prove my train of thought.
OK Lets get started,That little pump does nothing more than push COOL air into the valve cover,which in turn goes through a set of reed type valves to insure only cleen cool air enters the engine which flows down and through your engine till it reaches the evac point usually above the trans or gearset if you like.By now this air is dirty(from oil being slung around in a hot environment(smog) which is then introduced into the airbox to be burt with the regular air in the airbox.
NOW if you do the traditional airbox mod all you are doing is taking a open system,which provides crankcase breathing and cool air,and sealing the case so your engine is just pumping the same hot smog gas back and forth within itself.Which makes the pistons work harder to travel up and down in the bores.(Lost POWER,pressure for seal leakage,piston blow by and accellerated engine wear.If you dont mind being to be dirty to the environment simply apply small k&n flters to valve cover after removing smog pump but leave the plates in place they keep cool air moving throughout the enginge and relive pressure from case and pistons.Cooler engines produce more power.I myself will let that little air swithching push cool air all thru my motor cool it and carry all that potential slude out of my engine.What are you guys opinion on the obvious?
Lets talk some physics and thermal dynamics and how they effect an engines dynamics.
Hope this saves some time and hose purchases for those who are less educated,not to mention an innocent engine or two ....Peace Barry:2cents:
Now how would connecting all these hoses together be benificial to your engine,Well lets take a look, you are now sealing your crankcase vents shut great for 4wheeln not so much street use.What you have done is created is a minor vacume pressure fight within the crankcase.Which can cause gasget failures,higher internal temps,and advanced enginge wear!Emmission plates sound bad but they are not if you understand why they are there.I know this may be boring if your johnny hot rodder but give me a few more scennarios to prove my train of thought.
OK Lets get started,That little pump does nothing more than push COOL air into the valve cover,which in turn goes through a set of reed type valves to insure only cleen cool air enters the engine which flows down and through your engine till it reaches the evac point usually above the trans or gearset if you like.By now this air is dirty(from oil being slung around in a hot environment(smog) which is then introduced into the airbox to be burt with the regular air in the airbox.
NOW if you do the traditional airbox mod all you are doing is taking a open system,which provides crankcase breathing and cool air,and sealing the case so your engine is just pumping the same hot smog gas back and forth within itself.Which makes the pistons work harder to travel up and down in the bores.(Lost POWER,pressure for seal leakage,piston blow by and accellerated engine wear.If you dont mind being to be dirty to the environment simply apply small k&n flters to valve cover after removing smog pump but leave the plates in place they keep cool air moving throughout the enginge and relive pressure from case and pistons.Cooler engines produce more power.I myself will let that little air swithching push cool air all thru my motor cool it and carry all that potential slude out of my engine.What are you guys opinion on the obvious?
Lets talk some physics and thermal dynamics and how they effect an engines dynamics.
Hope this saves some time and hose purchases for those who are less educated,not to mention an innocent engine or two ....Peace Barry:2cents:
posted a couple of places. It shows a complete lack of understanding of how the whole emissions control and breather systems work on our bikes. The guy doesn't even seem to know what the parts are that he's cutting on.
