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Crank Case Ventilation Qs

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Old 09-04-2003, 09:01 PM
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Default Crank Case Ventilation Qs

what is the purpose of modifiying the CCV

i know it has something do do with increased pressure and such, but can someone go into some thick details about it.

i remember the 4g prelude at SS having two oversized CCV bungs coming out of the valve cover and the hoses going to an aluminium box. i also noticed enthalpy's car having some things done to it.
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Last edited by buck19; 09-09-2003 at 07:48 PM.
Old 09-04-2003, 10:50 PM
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so how would you rig something like that up. do they make CCV specific pumps. i want to learn all about this.
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Old 09-05-2003, 02:51 PM
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Atmosperic pressure and some ventilation is all a crankcase really needs.

One thing I like about my dry sump system is that it is always ventilating the crankcase without contaminating the intake charge or needing aditional hardware.

Last edited by 0HP930; 09-05-2003 at 02:54 PM.
Old 09-05-2003, 08:55 PM
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Originally posted by 400HP930
Atmosperic pressure and some ventilation is all a crankcase really needs.

One thing I like about my dry sump system is that it is always ventilating the crankcase without contaminating the intake charge or needing aditional hardware.
yeah, mine recycles the shit air. i just recently replaced my pcv valve and screen, that was some nasty shit built up after a while
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Old 09-06-2003, 10:33 AM
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On older engines that have a lot of blowby its scary what a PCV system can cram into the the intake.
Old 09-06-2003, 05:36 PM
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i know. its some gross shit
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Old 09-06-2003, 08:28 PM
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less crankcase pressure=free horsepower besides the fact that you can run low tension rings and have better ring seal like "Mars_302" said
Old 09-09-2003, 07:48 PM
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so that would explain the sludge i have on my TB.

400HP your talking about a dry sump oil pan will basically take care of crank case ventilation and pressure in its self.

i want to know what actually goes on. like go deeper into the subject

so the little filter you see on the PCV does harm and no create cause you loose the pressure?

do you need positive, negative, or nuetral atmospheric pressure in the crank case?
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If you have three quarters, four dimes, and four pennies, you have $1.19. You also have the largest amount of money in coins without being able to make change for a dollar.


Last edited by buck19; 09-09-2003 at 07:50 PM.



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