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Post by Stinger on Jul 16, 2013 16:38:29 GMT -5
I said nothing about what others do, or anything about filters. What I said is that the valve cover vent is too small (regardless of how it is used). So in other words, you'll be wasting your time by trying to use a filter on the valve cover. All you'll get is oil spray on your valve cover.
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Post by turbofox84 on Jul 21, 2013 19:16:45 GMT -5
First of all i want to say thank you very much for putting this write up on your forums, awesome mod for these cars.
the issue im having is, after installing this it did eliminate the blowby issue i was having but now my car is kind of surging when im on the gas in 1st and second. it only seems to do this at around 2,000 - 3,000 rpm when im going easy on the car.
any idea what this could be?
same size fittings
same oil can
84 svo stock
no stock oil breather just have the small tube plugged directly into the valve cover nipple.
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Post by Stinger on Jul 21, 2013 23:11:10 GMT -5
Try restricting the flow through the breather (either clamp the vent hose mostly shut or cover all but a small hole in the breather can where the filter is) and see if it still surges. I'd suggest staying out of boost (at least stay away from more than a few psi) during this test. I'm just seeing if the increased flow through the system is throwing off the VAM reading in some way. By restricting it, if it gets better/goes away we know that's what's happening. If it doesn't change, the problem isn't related to the catch can setup.
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Post by turbofox84 on Jul 22, 2013 0:21:06 GMT -5
just got done taping off most of the filter with some plastic i had, this definatly helped the issue, only had a small surge on one out of about 10 little passes.
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Post by Stinger on Jul 22, 2013 1:39:35 GMT -5
In that case, you'd be best off to make this a "sealed" system by routing the filter side of the catch can back into the inlet of the turbo like the stock system. You may have to mess with different sized openings though since the inlet draws a vacuum and could draw too much flow through the hose if too large (or not vent enough if too small).
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Post by bansheeman6100 on Sept 28, 2013 8:11:05 GMT -5
im glad i found this thread, as i have been dumping the valvecover breather to atmos via vacumm hose, and have been wanting to do a catch can. i will have to order up the can and the AN - NPT fitting and then i can grab the rest locally. but from what i read i should be good to go going straight from the barbed fitting on top of my valvecover to the can? and how did you plug the intake from the old PCV setup? im also interested in the routing the drain into the turbo idea, had anyone done it?
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Post by Stinger on Sept 28, 2013 22:13:56 GMT -5
I plugged the intake with a pipe plug since it's a pipe thread.
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Post by bansheeman6100 on Sept 29, 2013 8:20:56 GMT -5
I plugged the intake with a pipe plug since it's a pipe thread. thanks stinger, looks like i need to get in there and measure it up to check the size. also need to measure the pcv hose size and some other random stuff, and try and figure out if the sensor/gadget mounted on the bacl of the passenger strut tower is still necessary. for somre reason i remember after doing the swap it wasnt. because thats where i plan to mount the can, as most of yall did |
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Post by timmer35 on Oct 5, 2013 6:11:21 GMT -5
Hi, I put this system on and at first I was draining every week and was getting some fluids out. Through the summer I stopped getting fluids out, I've cleaned the filter and do have some oil in that. I don't see where there is any leaks on the tubing going up to the canister. So this may be a good thing as to I may not be getting blowby or the warmer weather doesn't create any condensation? Still smell vapors when I crack the window and allow them to sift into the car. Anything to worry about?
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Post by Stinger on Oct 5, 2013 11:53:52 GMT -5
It's the weather/condensation. It's typical to get much more stuff in the can in the cooler months.
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Post by bansheeman6100 on Oct 7, 2013 8:58:38 GMT -5
so got the pimp ordered, and now gonna work on getting this set-up. what diameter hose are you running from the can, 3/4" for PCV and 1/4" from the VC? all i have on the VC is a barb that i will just have to tie-in. i ask because i am having a tought time finding most of this locally and am probably gonna have to order everything online, including the intake plug
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Post by Stinger on Oct 7, 2013 14:56:55 GMT -5
Do you not have a Lowes, Home Depot, True Value, or other hardware store local?
The valve cover hose I used was 3/8". The hose from the crankcase was whatever the stock size is (5/8 or 3/4) and then stepped up a size by the time it got to the catch can.
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Post by ianb on Mar 27, 2014 14:38:44 GMT -5
Stinger on the hose connected to the box on the motor you are running a PCV valve anymore right? It looks like the hose is just simply connected with a elbow. Its just a straight hose to the can? I dont imagine needed it be to a one way thing with the PCV valve anymore with this setup..  Edit..and obviously just use a pipe plug or something on the turbo where it used to have the breather feeding into it? |
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Post by Stinger on Mar 27, 2014 20:01:08 GMT -5
Correct, no PCV valve. Just the elbow in the hose. You'll plug the turbo inlet fitting.
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Post by jonesy302 on Dec 21, 2014 20:47:54 GMT -5
Is it ok to combine the two systems (make up air and PCV) into one. In a factory set up the Pcv and the make up air both route back to air inlet. I know at my work,In a dyno lab, we route them thru a catch jar and back to the engine. I was just wondering how it may effect the calibration to combine the two
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