twins are alive and well
Jul 18, 2006 | 09:39 AM
#32
Just to help me understand whats happening to your motor, is this why the vacum lines that use to go from the valve covers to the intake manifold get taken off and vented instead?
Jul 18, 2006 | 10:05 AM
#33
The older school way of vent compression bled off or blow by, ( all engines have it) is to suck it out using the PCV. Post Crank Ventalation. NOW when power goes up so does the blow by. And at wide open throttle the pcv is not pulling a strong enough vacuum to remove the excess. Pressure builds. You really can not just vent to the air throu a breather, you will get oil all over the place and can blow seals out if it gets to much internal pressure. Which causes the oil rings to loose their seal and now performance is way down..
Hence the vacuum pump, sucks on the crank case harder, with a 2 fold helping.
1. removable or oil vapors from the engine, with out oil getting sucked into the combustion cylce.
2. Vacuum pumps helps the oil rings seal better, yeilding a better oil control.
Draw back is you will have to have a seporator tank or catch tank that you will need to drain from time to time.
Ricky
Hence the vacuum pump, sucks on the crank case harder, with a 2 fold helping.
1. removable or oil vapors from the engine, with out oil getting sucked into the combustion cylce.
2. Vacuum pumps helps the oil rings seal better, yeilding a better oil control.
Draw back is you will have to have a seporator tank or catch tank that you will need to drain from time to time.
Ricky
Jul 18, 2006 | 10:39 AM
#35
Originally Posted by Wilde Racing
Maybe there is too much exhaust back pressure for the venturi set-up to pull a vacuum at high RPM/exhaust flow.
Jul 18, 2006 | 11:41 AM
#36
i know this isn't the best possible answer but you could get a good catch can with a good filter agent of some sort. and plump your line over to in front of yopur turbo that would get you great suction. just need to use a good filter agent to prevent oil getting into your turbo. use a slash cut design and face the slash side toward the turbo and when the air rushes around it, it will create a vacuum.
Jul 18, 2006 | 11:55 AM
#37
Originally Posted by NXRICKY
The older school way of vent compression bled off or blow by, ( all engines have it) is to suck it out using the PCV. Post Crank Ventalation. NOW when power goes up so does the blow by. And at wide open throttle the pcv is not pulling a strong enough vacuum to remove the excess. Pressure builds. You really can not just vent to the air throu a breather, you will get oil all over the place and can blow seals out if it gets to much internal pressure. Which causes the oil rings to loose their seal and now performance is way down..
Hence the vacuum pump, sucks on the crank case harder, with a 2 fold helping.
1. removable or oil vapors from the engine, with out oil getting sucked into the combustion cylce.
2. Vacuum pumps helps the oil rings seal better, yeilding a better oil control.
Draw back is you will have to have a seporator tank or catch tank that you will need to drain from time to time.
Ricky
Hence the vacuum pump, sucks on the crank case harder, with a 2 fold helping.
1. removable or oil vapors from the engine, with out oil getting sucked into the combustion cylce.
2. Vacuum pumps helps the oil rings seal better, yeilding a better oil control.
Draw back is you will have to have a seporator tank or catch tank that you will need to drain from time to time.
Ricky
So this is something i need to think about then with my stroker i am building...
Jul 18, 2006 | 12:12 PM
#38
Teching In
Joined: Jul 2006
Posts: 31
Likes: 0
From: kansas city, mo
damn parish! i've been following your progress for quite a while now and i've got to say that you have one of the meanest street trucks in the country! that thing is gonna be a beast when you get it tunned. i look forward to seeing the outcome. keep up the good work man and good luck to you.
