FI with Catch Can. How fast/much oil are you collecting
06-10-2006, 01:54 AM
#1
FI with Catch Can. How fast/much oil are you collecting Well I thought I would post this here vs Internal section. Due to our operating conditions vs N/A.
Curious to see how much everyone is collecting in there catch can and when, where what level is a point to cause concern.
The reason I ask is that I just recently converted my 01 to a LS6 valley-PCV mod. With a AMW catch can, check vavle and no PCV valve, and a breather attached to LH & RH valve covers.
After aprox 100 miles of some in town and highway driving and a few WOT runs. My can has aprox a 1/4'' of oil in it.
Do I need to be worried here????
Motor has 4500 miles of that I would say 1500 are with easy F/I.
Curious to see how much everyone is collecting in there catch can and when, where what level is a point to cause concern.
The reason I ask is that I just recently converted my 01 to a LS6 valley-PCV mod. With a AMW catch can, check vavle and no PCV valve, and a breather attached to LH & RH valve covers.
After aprox 100 miles of some in town and highway driving and a few WOT runs. My can has aprox a 1/4'' of oil in it.
Do I need to be worried here????
Motor has 4500 miles of that I would say 1500 are with easy F/I.
06-10-2006, 10:37 PM
#2
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I don't think you need to be worried. Your catch tank is doing it's job. Better in the tank than in the intake. Maybe run a line from your valve covers to supercharger intake to create vacuum in the crankcase under boost like mightymouse recommends.
06-11-2006, 07:19 PM
#3
Originally Posted by bone324
I don't think you need to be worried. Your catch tank is doing it's job. Better in the tank than in the intake. Maybe run a line from your valve covers to supercharger intake to create vacuum in the crankcase under boost like mightymouse recommends.
I just feel it is a bit to much for a 100 miles of driving, 1000 miles and no telling.
So TTT for some more input............
06-11-2006, 09:05 PM
#4
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Originally Posted by 618HAWK
Yes I have thought of that but I do not want any oil to pass through the blower, intercoolers or over my maf.
Well, that's what the catch tank is for. I think I would be more upset if I dropped a wad of cash on a nice catch tank that wasn't collecting anything. I have the cheapo Husky filters on mine. I don't drive it alot, and especially haven't put more than 10 miles on it since the filters were installed, but I already have a small amount of oil in one of them.
06-12-2006, 10:30 AM
#5
If you have breathers on it, doesnt that negate the effect of the LS6 valley cover pulling vacuum through the catch can and intake?
Unless your assuming it pulls through there at cruise, then WOT and pressurized intake manifold it shuts the checkvalve you said you have and relies on the valvecover breathers
Unless your assuming it pulls through there at cruise, then WOT and pressurized intake manifold it shuts the checkvalve you said you have and relies on the valvecover breathers
06-12-2006, 06:15 PM
#7
Originally Posted by lo_jack
Can you not just run the catch can "out" into the pipe right before the intake side of the blower, as was suggested?
With the check valve, closed under boost and relying on the valve cover breathers.
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06-12-2006, 08:55 PM
#9
My catch can collected about half a cup for every 40 minute ride I took it out on, for the first 4000 miles (new motor, Vortech-blown 383). The rings must have fully seated by then because the catch can now only gets maybe a 1/2 Teaspoon every 300 miles. It might change again when, at 5K miles, I change to a synthetic oil like Redline, but I doubt if it will go back up much.
I'm running one -8 vented cap on each valve cover and one 1-way -6 line to the catch can from each valve cover, and a -8 oilpan vent.
Jim
I'm running one -8 vented cap on each valve cover and one 1-way -6 line to the catch can from each valve cover, and a -8 oilpan vent.
Jim
06-12-2006, 08:58 PM
#10
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Originally Posted by 618HAWK
To add, I trying to keep any oil from entering the blower-ducting -intercoolers-MAF.
Do you understand what an oil catch can does? It catches oil before it goes somewhere you don't want it to go. Regardless of how you plumb the line for vacuum or seal it with a check valve, the oil will not go into your ducting, intercoolers, or MAF if you have the catch tank plugged in.
07-07-2006, 09:52 AM
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Do any of you guys have pics of your catch can set-up?
Also, here is a link to a catch can I ran across recently that some of you may be interested in...
http://www.performancetrucks.net/for...d.php?t=369032
Also, here is a link to a catch can I ran across recently that some of you may be interested in...
http://www.performancetrucks.net/for...d.php?t=369032
07-07-2006, 08:26 PM
#17
Originally Posted by bone324
Do you understand what an oil catch can does? It catches oil before it goes somewhere you don't want it to go. Regardless of how you plumb the line for vacuum or seal it with a check valve, the oil will not go into your ducting, intercoolers, or MAF if you have the catch tank plugged in.
You still have a oil mist that will make it past the can.We gave up on catch cans a long time ago after testing all different ways.On a street car there was no HP increase pulling a vacuum through the blower inlet and we always got an oil mist in the intake no matter what.Now we just run breather's or a catch can/breather setup,then you change the oil every 2500miles(which you should anyways with FI).Now a race type car can benifit from a vacuum pump setup which pulls alot more vacuum than the blower inlet. 
07-07-2006, 08:52 PM
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I put a catchcan between my valvecover and blower inlet-it's a lttile husky unit and it fills up quickly after say 4-or 5 pulls. Pulling oil through the blower cannot be good especially with something like the selfcontained Prochargers. I just put a valve cover breather on both valvecovers-I don't want any oil going into my blower, intercooler or piping. If it ends up in the intake it's gonna lead to knock.
07-07-2006, 09:05 PM
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Originally Posted by 618HAWK
Anyone else have any other insight.
I will get it on the dyno soon, still putting breakin miles on it.
They had some 402's for sale in that GP too, might want to talk to them.
Rob (Bad30th)