scavenge pump mounting and drain line help
09-05-2013, 12:11 PM
#22
9 Second Club
I have Turbo Werx pump mounted in the rear, right behind the diff on a C5 with two -10 lines coming in from a T and a -6 going back to the valve cover. I do have a check valve on each turbo, without it the oil will drain past the seals and blow out the exhaust. One way that may possibly fix that without check valves is to have the scavenge pump run on a turbo timer or something for maybe 30 seconds after the car is off to suck the oil out of the turbos, but then they might be a little dry on startup.
Last edited by stevieturbo; 04-03-2014 at 05:05 PM.
09-05-2013, 05:39 PM
#23
TECH Addict
iTrader: (2)
ok, just so theres no confusion, i am running BOTH,
I already have a preturbo/feed side summit racing check vavle.
I just ordered a 10an check valve to go POST scavenger/immediatly after the pump so that when the cars shutoff, the return side doesnt drain in the turbo.
So i will be running 2 checkvalves. one for the feed side and one for the drain side, after the pump.
I also have my scavenger wired into my racetronix hotwire so that it primes w ith the fuel pump. I also cycle the key a couple times to get out some of the oil in the turbo out when i shut the car off.
I already have a preturbo/feed side summit racing check vavle.
I just ordered a 10an check valve to go POST scavenger/immediatly after the pump so that when the cars shutoff, the return side doesnt drain in the turbo.
So i will be running 2 checkvalves. one for the feed side and one for the drain side, after the pump.
I also have my scavenger wired into my racetronix hotwire so that it primes w ith the fuel pump. I also cycle the key a couple times to get out some of the oil in the turbo out when i shut the car off.
10-25-2013, 09:10 AM
#24
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ok, just so theres no confusion, i am running BOTH,
I already have a preturbo/feed side summit racing check vavle.
I just ordered a 10an check valve to go POST scavenger/immediatly after the pump so that when the cars shutoff, the return side doesnt drain in the turbo.
So i will be running 2 checkvalves. one for the feed side and one for the drain side, after the pump.
I also have my scavenger wired into my racetronix hotwire so that it primes w ith the fuel pump. I also cycle the key a couple times to get out some of the oil in the turbo out when i shut the car off.
I already have a preturbo/feed side summit racing check vavle.
I just ordered a 10an check valve to go POST scavenger/immediatly after the pump so that when the cars shutoff, the return side doesnt drain in the turbo.
So i will be running 2 checkvalves. one for the feed side and one for the drain side, after the pump.
I also have my scavenger wired into my racetronix hotwire so that it primes w ith the fuel pump. I also cycle the key a couple times to get out some of the oil in the turbo out when i shut the car off.
11-14-2013, 09:58 AM
#27
Ideally you want a large diameter drain going to a vented catch can. You never want the scavenge pump to pull a vacuum on the turbo drain itself, this can pull oil past the seals in the turbo. The only way to 100% prevent this is to have a vented sump of some sort. -6AN from the bottom of the sump to the pump and back to your oil pan/valve cover/whatever is fine assuming the pump can keep up with the volume and drain the sump faster than it fills. Most actual scavenge pumps will do this without issue.
