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the pcv and draft cans have a dirty side / clean side that would be eliminated, but since you are not recirculating with the race can, it doesn't matter.
What would you suggest for my setup. Mainly a drag car with a ecs supercharger kit/ vortecch ysi. I have the proform valve covers with a hose fitting on the rear of the driver side and front of passenger side. I dont have a valley cover for it yet, so I could go either way on that. Thanks
How do you suggest I run my system. Do I run a PCV valve? Do I run my system closed or with a breather?
Stock carburated ls1
Ls1 valley tray with No vent
PCV port rear driver valve cover
Pass valve cover has 2 ports front / rear
1 intake manifold vacuum port
1 carburetor vacuum port
1 catch can with 2 ports Clean/ Dirty with optional breather.
vacuum port on the carb
Driver side valve cover rear PCV port
Pass side valve cover front and rear ports
LS1 Valley Cover with NO breather or port
Catch can with optional breather, 2 ports Clean/ Dirty.
So, what Catch Can do you have(including model and or pt#) and does the optional installed breather have a 1 way valve in it, or does it allow a free flow of air in and out of it, an can it be removed and not used(blocked) ?
BTW, a photo of it would also be helpful.
VMS racing large can with an optional breather that can be plugged. I was advised that the breather will make a vacuum leak. When it is attached the idle goes high, when plugged it's low again.
What I'd do with the catch can is remove the breathe and plug it. Then find a good location up front to either the left or right of the radiator and plumb it in between the rear driver side valve cover port(dirty air outlet) and vacuum port on the intake manifold. Then either get a RX performance 1 way valve breather that mounts in the oil fill cap location or contact Might Mouse Solutions about a similar 1 way valve breather solution.
You can get the RX Performance breather/1 way valve at Colorado Speed.
For the fresh air inlet on the front port of the passenger side valve cover run a length of hose from it up to a port mounted into the air-filter assembly base. This will be your filtered fresh air source. Or, for another option just run a length of hose to a small breather filter mounted in a location safely away from possible water ingestion.
I'd also cap the rear port on the PS valve cover.
For the fresh air inlet on the front port of the passenger side valve cover run a length of hose from it up to a port mounted into the air-filter assembly base. This will be your filtered fresh air source. Or, for another option just run a length of hose to a small breather filter mounted in a location safely away from possible water ingestion.
I'd also cap the rear port on the PS valve cover.
Thank you sir. If I run a hose from the front passenger side to the air cleaner base would I still need a breather on the oil filler? Or does that take its place.
BTW, if you can mount the CC to one far front corners of the engine bay(away from engine heat) to maximize it's ability to condense the oil vapors and trap them in the CC.. This also helps keep the engine from looking to cluttered.
Keep use posted on what you finally end up going with an where you mounted it.
I order the CC head mount bracket to hold my can...
So you're saying that's not a place you recommend mounting it?
What are you saying is for maximum efficiency you would want the can in a cool location. The cylinder head is an extremely convenient mounting location and it will certainly work very well but if you are looking again for a maximum efficiency somewhere in the open air or outside of the engine compartment but once you get that far away is starts to be like splitting hairs.
Thank you sir. If I run a hose from the front passenger side to the air cleaner base would I still need a breather on the oil filler? Or does that take its place.
The breather with a 1 way valve is only to vent any possible positive crank case that might occur like when letting your foot of the gas pedal at WOT. So technically NO you don't need it, especially if you engine has very little combustion blow-by. Now if you don't run it and notice that oil has been getting pushed up through the fresh air hose on to the air cleaner base then that would be a good sign you could make good use of a breather with a 1 way valve.
Furthermore the filter after the valve is only there to catch some escaping oil vapor when the valve opens and as a safety feature to filter income air if the valve ever happens to fail and stays open.
The breather with a 1 way valve is only to vent any possible positive crank case that might occur like when letting your foot of the gas pedal at WOT. So technically NO you don't need it, especially if you engine has very little combustion blow-by. Now if you don't run it and notice that oil has been getting pushed up through the fresh air hose on to the air cleaner base then that would be a good sign you could make good use of a breather with a 1 way valve.
Furthermore the filter after the valve is only there to catch some escaping oil vapor when the valve opens and as a safety feature to filter income air if the valve ever happens to fail and stays open.
The breather with a 1 way valve is only to vent any possible positive crank case that might occur like when letting your foot of the gas pedal at WOT. So technically NO you don't need it, especially if you engine has very little combustion blow-by. Now if you don't run it and notice that oil has been getting pushed up through the fresh air hose on to the air cleaner base then that would be a good sign you could make good use of a breather with a 1 way valve.
Furthermore the filter after the valve is only there to catch some escaping oil vapor when the valve opens and as a safety feature to filter income air if the valve ever happens to fail and stays open.
One more thing, do i need to run an acutal PCV valve from the Valve cover to the Catch Can? Or just run the hose by itself
I order the CC head mount bracket to hold my can...
So you're saying that's not a place you recommend mounting it?
For many application that location is perfectly fine, but for better oil vapor condensation in the CC, a location further away from exhaust heat will help condense more oil vapors in the CC .
12-05-2014, 11:31 PM
