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crank case evacuation systems????

Posted By: pattyboy 572

crank case evacuation systems???? - 09/11/11 03:32 AM

Crank case evacuation systems....do they work ...built 572 world block indy head..will these 35.00 systems work or will i need a 3 vane vacuum system any thoughts would be appreciated thanks pat( pump gas streetable ocassional track)
Posted By: blracing

Re: crank case evacuation systems???? - 09/12/11 12:45 PM

if installed properly, they work. but a 572 may still need a vacume pump. put a vacume gauge on it and see what you have without the pump. then you can decide what to do.
Posted By: Guitar Jones

Re: crank case evacuation systems???? - 09/12/11 01:53 PM

I have the Moroso pan evac on my car but the aspirators it came with were too stiff, they didn't open. I used some off an old slant 6 Volare that open easier and it works fine now. I probably should put a pump on it but don't really have the money to spend on that right now.
Posted By: 440Jim

Re: crank case evacuation systems???? - 09/12/11 02:36 PM

Quote:

( pump gas streetable ocassional track)


I don't think the header evac systems work too well with mufflers behind them. But it can depend on the muffler, tail pipes, location, etc.
Posted By: hemi-itis

Re: crank case evacuation systems???? - 09/12/11 07:16 PM

The pan evac will work,but if it's in the budget get a vacume pump.
Posted By: MR_P_BODY

Re: crank case evacuation systems???? - 09/12/11 09:04 PM

Quote:

Crank case evacuation systems....do they work ...built 572 world block indy head..will these 35.00 systems work or will i need a 3 vane vacuum system any thoughts would be appreciated thanks pat( pump gas streetable ocassional track)




A evac system can pull a MAX of 5"hg and if your exhaust
has more than 5" of back pressure all you will do
is burn out the valves on the evac and pressurize
the crank case... for every inch of back pressure
your exhaust has you will reduce the amount of vac
that can be pulled on the engine... there is a way
to do it with a evac but you need to mount it after
the muffler
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