Question with my vtec head
03-25-2015, 04:25 AM
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Question with my vtec head
93 Honda Civic si ( b16a head, b18a bottom) 5 speed standard
I jus got this im a little new to Vtecs And I've notied some have really small air filters attached to it or they have a hose leading to somewhere else I have no clue and mine has neither.
I jus got this im a little new to Vtecs And I've notied some have really small air filters attached to it or they have a hose leading to somewhere else I have no clue and mine has neither.
Last edited by Jjeessee; 04-24-2015 at 03:15 AM. Reason: Thread lock
03-25-2015, 04:54 AM
#3
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Re: Question with my vtec head
PCV. See the black cover on your intake pipe? There usually would be a hose that runs from your valve cover to that black cover to release pressure from the crankcase. It's fine the way it is, most people when installing an aftermarket intake run into the problem of it not having the outlet for the PCV hose to connect to and just put a small filter on the outlet on the valve cover.
03-25-2015, 05:01 AM
#4
Re: Question with my vtec head
In the picture above there would normally be a hose connecting the valve cover to the ARC intake at the black circle or hole at the 1 O'clock position from the point you circled.
The purpose of the crank case breather is to release gas that leaks past the piston rings... it happens in all engines even the healthiest. Pressure can build up in the crank case which needs to be ventilated and this is how it does that... along with the PCV. Here is a quote I found on team-integra.com from surferX
"The honda crankcase breather is a POSITIVE pressure ventilation system.The air from the intake blows into the valve cover. It is NOT a negative pressure ventilation system...it does NOT suck air from the valvecover to the intake.
Breathers remove the source of positive ventilation that repressurizes the POSTIVE CRANKCASE VENTILATIoN (PCV) valve.
There is less pressure in the crank when you add a breather at the valve cover. The consequence of this is you get more positive blow-by from the combustion chamber past the piston rings and into the crankcase. More blow-by means less cylinder pressure...less cylinder pressure means the burn is slower and less complete...the result is more emissions and less power.
If you want to do this right and remove oil vapor from the circulating crankcase before it goes into the intake valve then, get an oilcatch can and put a breather on the catch can. Then place the catch can in between the valve cover breather and the PCV valve.
Disconnecting the breather tube, which blows fresh intake air into the valve cover, and placing a breather on the valve cover just creates more blow-by and emissions. Eventually you have so much blow-by, you lose power."
Hope this helps.
The purpose of the crank case breather is to release gas that leaks past the piston rings... it happens in all engines even the healthiest. Pressure can build up in the crank case which needs to be ventilated and this is how it does that... along with the PCV. Here is a quote I found on team-integra.com from surferX
"The honda crankcase breather is a POSITIVE pressure ventilation system.The air from the intake blows into the valve cover. It is NOT a negative pressure ventilation system...it does NOT suck air from the valvecover to the intake.
Breathers remove the source of positive ventilation that repressurizes the POSTIVE CRANKCASE VENTILATIoN (PCV) valve.
There is less pressure in the crank when you add a breather at the valve cover. The consequence of this is you get more positive blow-by from the combustion chamber past the piston rings and into the crankcase. More blow-by means less cylinder pressure...less cylinder pressure means the burn is slower and less complete...the result is more emissions and less power.
If you want to do this right and remove oil vapor from the circulating crankcase before it goes into the intake valve then, get an oilcatch can and put a breather on the catch can. Then place the catch can in between the valve cover breather and the PCV valve.
Disconnecting the breather tube, which blows fresh intake air into the valve cover, and placing a breather on the valve cover just creates more blow-by and emissions. Eventually you have so much blow-by, you lose power."
Hope this helps.
03-25-2015, 05:39 AM
#5
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Re: Question with my vtec head
PCV. See the black cover on your intake pipe? There usually would be a hose that runs from your valve cover to that black cover to release pressure from the crankcase. It's fine the way it is, most people when installing an aftermarket intake run into the problem of it not having the outlet for the PCV hose to connect to and just put a small filter on the outlet on the valve cover.
03-25-2015, 06:07 AM
#6
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Re: Question with my vtec head
In the picture above there would normally be a hose connecting the valve cover to the ARC intake at the black circle or hole at the 1 O'clock position from the point you circled.
The purpose of the crank case breather is to release gas that leaks past the piston rings... it happens in all engines even the healthiest. Pressure can build up in the crank case which needs to be ventilated and this is how it does that... along with the PCV. Here is a quote I found on team-integra.com from surferX
"The honda crankcase breather is a POSITIVE pressure ventilation system.The air from the intake blows into the valve cover. It is NOT a negative pressure ventilation system...it does NOT suck air from the valvecover to the intake.
Breathers remove the source of positive ventilation that repressurizes the POSTIVE CRANKCASE VENTILATIoN (PCV) valve.
There is less pressure in the crank when you add a breather at the valve cover. The consequence of this is you get more positive blow-by from the combustion chamber past the piston rings and into the crankcase. More blow-by means less cylinder pressure...less cylinder pressure means the burn is slower and less complete...the result is more emissions and less power.
If you want to do this right and remove oil vapor from the circulating crankcase before it goes into the intake valve then, get an oilcatch can and put a breather on the catch can. Then place the catch can in between the valve cover breather and the PCV valve.
Disconnecting the breather tube, which blows fresh intake air into the valve cover, and placing a breather on the valve cover just creates more blow-by and emissions. Eventually you have so much blow-by, you lose power."
Hope this helps.
The purpose of the crank case breather is to release gas that leaks past the piston rings... it happens in all engines even the healthiest. Pressure can build up in the crank case which needs to be ventilated and this is how it does that... along with the PCV. Here is a quote I found on team-integra.com from surferX
"The honda crankcase breather is a POSITIVE pressure ventilation system.The air from the intake blows into the valve cover. It is NOT a negative pressure ventilation system...it does NOT suck air from the valvecover to the intake.
Breathers remove the source of positive ventilation that repressurizes the POSTIVE CRANKCASE VENTILATIoN (PCV) valve.
There is less pressure in the crank when you add a breather at the valve cover. The consequence of this is you get more positive blow-by from the combustion chamber past the piston rings and into the crankcase. More blow-by means less cylinder pressure...less cylinder pressure means the burn is slower and less complete...the result is more emissions and less power.
If you want to do this right and remove oil vapor from the circulating crankcase before it goes into the intake valve then, get an oilcatch can and put a breather on the catch can. Then place the catch can in between the valve cover breather and the PCV valve.
Disconnecting the breather tube, which blows fresh intake air into the valve cover, and placing a breather on the valve cover just creates more blow-by and emissions. Eventually you have so much blow-by, you lose power."
Hope this helps.
In this picture the filter isint just right connect to valve cover an I notice two hoses going to the filter and one coming from the valve head only?<br/>How can I add it to my car and where would I buy them?
03-25-2015, 10:28 AM
#7
Re: Question with my vtec head
He is using a catch can. They collect any oil that blows by preventing it from going back into the system. Not really sure if you need them as much on lightly modified N/A cars but on a turbo car they are a must. If you absolutely have to have one they aren't difficult to come by just depends on what you want to spend.
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03-26-2015, 02:45 PM
#10
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Re: Question with my vtec head
also avoid buying thread lock to avoid thread lock.
http://www.bitcore.org/stuff/bmw-forums/thread-lock.jpg
http://www.bitcore.org/stuff/bmw-forums/thread-lock.jpg
03-28-2015, 03:03 PM
#11
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Re: Question with my vtec head
No, its not. Honda put that pvc there for a reason.
Quoted from : https://honda-tech.com/acura-integra...cover-1469739/
Quoted from : https://honda-tech.com/acura-integra...cover-1469739/
You should read up on how the PCV system actually works.
Your ideas don't make much sense. The breather tube allows air INTO the valve cover, not the other way. It is called a POSITIVE crankcase ventilation. Air is pulled into the valve cover (and heated by the coolant pipe it is attached to to prevent condensation in the valve cover) the air travels though the valve cover and though the bottom end and pulls the oil/exhaust vapours out of the block and through the PCV valve and gets burned. By blocking the valve cover breather line, you are preventing the PCV from venting those vapours inside the motor and this will cause your oil to get contaminated much quicker and you will see increased engine wear. By putting a filter on the valve cover, you are allowing ambient temperature air into the valve cover (because you are bypassing the coolant pre-heater) which will cause conensation in the valve cover and sludge buildup. This will shorten the life of your motor.
In other words, if you don't understand how it works, leave it alone.
Your ideas don't make much sense. The breather tube allows air INTO the valve cover, not the other way. It is called a POSITIVE crankcase ventilation. Air is pulled into the valve cover (and heated by the coolant pipe it is attached to to prevent condensation in the valve cover) the air travels though the valve cover and though the bottom end and pulls the oil/exhaust vapours out of the block and through the PCV valve and gets burned. By blocking the valve cover breather line, you are preventing the PCV from venting those vapours inside the motor and this will cause your oil to get contaminated much quicker and you will see increased engine wear. By putting a filter on the valve cover, you are allowing ambient temperature air into the valve cover (because you are bypassing the coolant pre-heater) which will cause conensation in the valve cover and sludge buildup. This will shorten the life of your motor.
In other words, if you don't understand how it works, leave it alone.
03-28-2015, 05:34 PM
#12
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Re: Question with my vtec head
No, its not. Honda put that pvc there for a reason.
Quoted from : https://honda-tech.com/acura-integra...cover-1469739/
Quoted from : https://honda-tech.com/acura-integra...cover-1469739/
03-28-2015, 08:09 PM
#13
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Re: Question with my vtec head
From what i see in OP's pic, the hose isn't connected to anything. Which its supposed be, without that on its constantly blowing vacuum fumes in the engine bay from combustion.
By putting a FILTER on the valve cover, you are allowing ambient temperature air into the valve cover (because you are bypassing the coolant pre-heater) which will cause condensation in the valve cover and sludge buildup. This will shorten the life of your motor.
03-28-2015, 08:34 PM
#14
Re: Question with my vtec head
without that on its constantly blowing vacuum fumes in the engine bay from combustion.
03-28-2015, 09:12 PM
#15
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Re: Question with my vtec head
The PCV system first draws filtered air from the breather hose into the crankcase. Next, vacuum from intake manifold (IM) sucks out the crankcase blow-by gases. I can't tell from the picture, but if the PCV hose is attached to the IM, then blow-by gas would be sucked into the IM rather than blown into the engine bay.
03-29-2015, 06:42 AM
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Re: Question with my vtec head
You literally just contradicted yourself in your own single post. Imma let you figure that one out but I have to say RonJ gave the best answer of all time.
03-29-2015, 09:09 AM
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Re: Question with my vtec head
OP is missing the hose and the nipple that is suppose to be on the aftermarket intake isn't there. That small black round rubber grommet you see is suppose to be for the iat, maybe this intake was specifically to obd2 motors (well on the d16y8 thats where the iat would be) because that is where the iat would be and not on the intake manifold. Also to correct this all OP needs is to remove that rubber grommet, jb weld a nipple on there and attach a rubber hose to both nipples and be done.
04-08-2015, 10:49 AM
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Re: Question with my vtec head
Ok I put a filter on it... Idont get it some of you are saying it does something some of you say it does nothing, I need a proper answer, should I leave the air filter on or do the catch can idea ?
04-08-2015, 10:54 AM
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Re: Question with my vtec head
Should it be connected from head to intake? Cause there is a rubber there blocking it off, find me a picture showin me what it should be like
04-09-2015, 06:36 AM
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Re: Question with my vtec head
OP is missing the hose and the nipple that is suppose to be on the aftermarket intake isn't there. That small black round rubber grommet you see is suppose to be for the iat, maybe this intake was specifically to obd2 motors (well on the d16y8 thats where the iat would be) because that is where the iat would be and not on the intake manifold. Also to correct this all OP needs is to remove that rubber grommet, jb weld a nipple on there and attach a rubber hose to both nipples and be done.
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