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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
While this has been discussed a lot I don't think anyone has found an alternative to the Weistec Oil-Water/Air separator or managed to cobble their own solution. It would be nice to have a more reasonably priced alternative.
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
Originally Posted by deadlyvt
I have a mishimoto one with some custome lines and a modified pcv has worked problem free for 20k km
+1. I have an ADD W1 that set me back about $90 CAD (which appears to be identical to the Weistec one sans machined logo on top) and a new PCV - which is where the fittings come from - that was under $150 CAD.
+1. I have an ADD W1 that set me back about $90 CAD (which appears to be identical to the Weistec one sans machined logo on top) and a new PCV - which is where the fittings come from - that was under $150 CAD.
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
Never mind - I see that there are indeed two different versions of it, one of which has a breather w/ an air filter at the top of the can. It's NOT that one - that design is actually stupid as the PCV will just vent to the outside through that filter - it's the one without the breather. The only "modification" I made was to pack a chunk of stainless steel scouring pad material (Scotch-Brite?) in the inlet baffle chamber which conveniently has a perforated screw-on cap that was presumably made for this very purpose.
Never mind - I see that there are indeed two different versions of it, one of which has a breather w/ an air filter at the top of the can. It's NOT that one - that design is actually stupid as the PCV will just vent to the outside through that filter - it's the one without the breather. The only "modification" I made was to pack a chunk of stainless steel scouring pad material (Scotch-Brite?) in the inlet baffle chamber which conveniently has a perforated screw-on cap that was presumably made for this very purpose.
2012 C63 with P30, LSD, and EES Supercharger, 1959 Plymouth with Viper V10 and Tremec 6sp
Those are great pictures and show how you don't need to purchase a Weistec unit just for the fittings as you can install hoses on your original PCV valve. Your catch can and installation are very similar to the ESC catch can I used during my supercharger installation. I have pictures of the ESC catch can on my posting ESS Supercharger DIY installation.
I'm trying to envision what you've done. So what's with the electrical tape? It looks to me like it's the following sequence:
Crankcase-->PCV Fitting-->New Hose to Catch Can IN-->Catch Can-->New Hose Catch Can OUT-->PCV Valve IN (originally from Crank Case)-->PCV Valve>Stock Connection to Manifold.
Is that right? I think I'm stuck on grasping the connections on the PCV valve itself and how it comes together there.
I'm trying to envision what you've done. So what's with the electrical tape? It looks to me like it's the following sequence:
Crankcase-->PCV Fitting-->New Hose to Catch Can IN-->Catch Can-->New Hose Catch Can OUT-->PCV Valve IN (originally from Crank Case)-->PCV Valve>Stock Connection to Manifold.
Is that right? I think I'm stuck on grasping the connections on the PCV valve itself and how it comes together there.
The electrical tape was used to test fit it and I used clamps on it afterwards.
what we are doing is putting the can between the pcv valve and letting it work as usual. The way I did mine I had to cut the valve and modify it.
2012 C63 with P30, LSD, and EES Supercharger, 1959 Plymouth with Viper V10 and Tremec 6sp
Right, you remove the hose from your existing PCV valve and you are left with the two fitting you need. You then need 3/4" inside diameter hose to run to your catch can and then back to the other PCV fitting. Make sure you connect the correct hose the the "in" and "out" of you catch can as most good cans have an internal baffle that requires correct direction of the flow. It is also much easier if you get 3/4" fittings for your catch can so the hose fits the same as on your PCV valve. The ESC can I purchased had different options for different size hoses. I have some pictures of this on my ESS supercharger DIY install thread.
Right, you remove the hose from your existing PCV valve and you are left with the two fitting you need. You then need 3/4" inside diameter hose to run to your catch can and then back to the other PCV fitting. Make sure you connect the correct hose the the "in" and "out" of you catch can as most good cans have an internal baffle that requires correct direction of the flow. It is also much easier if you get 3/4" fittings for your catch can so the hose fits the same as on your PCV valve. The ESC can I purchased had different options for different size hoses. I have some pictures of this on my ESS supercharger DIY install thread.
yup exactly and there is no need to spend anywhere close to 600. I think mine cost me under 100 for everything needed.
yup exactly and there is no need to spend anywhere close to 600. I think mine cost me under 100 for everything needed.
OK. I think that helps. Maybe. So potentially one advantage of the Weistec can then is that it only requires removal of the valve from the Manifold, whereas I can see that to do the generic can, you'd like really need to remove the manifold to get down there and make the connections...? True or no?
OK. I think that helps. Maybe. So potentially one advantage of the Weistec can then is that it only requires removal of the valve from the Manifold, whereas I can see that to do the generic can, you'd like really need to remove the manifold to get down there and make the connections...? True or no?
you need to make that connection either way and might be able to do it without taking the manifold off but I have huge hands and didnt even bother lol.
it's good maintenance anyways to take it off because my manifold was full of oil that I cleaned up.
You take off the pcv. Cut or remove the hose. On the remaining fittings where the old hose was, put one end into the can, other end back to the intake, add clamps and you're done!
I just did mine using 1/2 inch ID hose using the following steps:
- remove PCV from back of intake.
- make small slice down hose where it connects to PVC so that you can wiggle it off. Leave it connected to the crankcase, no need to remove intake.
- a 1/2 ID hose slides into the factory PVC hose from the crankcase. Insert hose, secure with clamp, run to inlet on your catch can.
- run 1/2 inch hose from outlet of catch can back to PVC on intake. I used a 3/4inch ID 90 degree elbow. One end fit the connection on the PVC perfectly and the 1/2 inch hose from the catch can fits inside the 3/4 inch elbow perfectly.
I like the catch can from ECS Tuning since it has a four chamber baffle. Is there a cheaper alternative that will work as well? Just curious which catch cans you guys are using and how much you spent
Heres my non weistec catch can install. Its been on the car for 3 months and works fine.
1) Used a new PCV valve and removed the hose connecting both ends (pcv part number is 156010037005) approx $170 AUD
2) Bough ebay catch without vent which was about $50aud.
3) Bought 2m of hydraulic hose 3/4" to fit the the pipe and the catch can fittings. Taipan braided type 100R6 from ebay. That was about $70AUD
4) 4 good hose clamps
12-20-2017, 08:26 AM
