[Z06] Oil breather or oil catch can
09-24-2014, 02:42 AM
#3
Why would you use it sparingly? I and several others run a GZ vaccu pump all the time to make sure crankcase pressure is not an issue and keep the rings sealing better and avoid blow by.
09-24-2014, 09:24 AM
#4
Why limit vacuum?
Engine builders appear to believe that the lack of oil to wrist pins caused by removal of too much oil mist from the crankcase causes wrist pin damage. Some engine builders report fluctuations in oil pressure above 12", we have not noticed that on engines we have observed during testing. However in a recent article, it was suggested that the air velocity passing through the block to heads at the oil return locations causes resistance to oil flowing back to the pan, which could indeed reduce oil pressure. An air line from the fuel block off on a Chevrolet to the valve cover helps mitigate this problem as well as possibly helping to balance the vacuum in the crankcase to that in the valve cover.
http://www.gzmotorsports.com/vacuum-pump-guide.html
Engine builders appear to believe that the lack of oil to wrist pins caused by removal of too much oil mist from the crankcase causes wrist pin damage. Some engine builders report fluctuations in oil pressure above 12", we have not noticed that on engines we have observed during testing. However in a recent article, it was suggested that the air velocity passing through the block to heads at the oil return locations causes resistance to oil flowing back to the pan, which could indeed reduce oil pressure. An air line from the fuel block off on a Chevrolet to the valve cover helps mitigate this problem as well as possibly helping to balance the vacuum in the crankcase to that in the valve cover.
http://www.gzmotorsports.com/vacuum-pump-guide.html
If the oil is getting aerated there is another cool device I ran across recently: Spintric air/oil separator
09-24-2014, 10:13 AM
#5
Safety Car
RX can has a one way check valve that assist your PCV system keeping the pressure where needs to be. They also have a dual valve system for forced induction.
09-27-2014, 04:36 AM
#6
When I was looking at these in the past I came to the conclusion (after a bit of reading here and there) that for a stock short block street engine a max of 6-7" of vacuum would be prudent, but then I eventually concluded that for a stock engine the pump probably wasn't needed unless it saw a lot of track time.
If the oil is getting aerated there is another cool device I ran across recently: Spintric air/oil separator
If the oil is getting aerated there is another cool device I ran across recently: Spintric air/oil separator
09-30-2014, 01:04 AM
#7
When I was looking at these in the past I came to the conclusion (after a bit of reading here and there) that for a stock short block street engine a max of 6-7" of vacuum would be prudent, but then I eventually concluded that for a stock engine the pump probably wasn't needed unless it saw a lot of track time.
If the oil is getting aerated there is another cool device I ran across recently: Spintric air/oil separator
If the oil is getting aerated there is another cool device I ran across recently: Spintric air/oil separator
07-01-2019, 01:50 PM
#8
Supporting Vendor
if the driver cover looks like this, run the can to this port and then on to the intake manifold.
the passenger cover should go to the fresh cold maf air bridge only.
funny how it does not have the valley port, engine may have been replaced with a truck one
the passenger cover should go to the fresh cold maf air bridge only.
funny how it does not have the valley port, engine may have been replaced with a truck one
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#mmsolutions
Six time NMCA True Street Champions
Home of the first Twin Turbo C7Z 7.81 @ 176
3470# Stock bottom end and heads Corvette Stock Bottom End Record Holder