Oil Separator Tanks

vristang

vristang

15 Year Member
Mar 31, 2005
4,933
101
124
Seattle
#1
I have tried the Home Depot el cheapo fix, and it did not work. I filled the el cheapo separator and still had oil in the intake, within 225 miles.

I am looking for a REAL separator tank.
I have seen Moroso and Stef's.

Are there any others?

thanks
jason
 
#2
if you can fill one of those things up that fast you have blow by problems. oil separators are a band-aid fix for a bigger problem. but if there is just a small amount of oil in it than its worth it...but if you fill up one of those small containers than something needs to be fixed
 
#3
An evac pump might be next on the list for you Jason - I know you have been considering it.

Jaz cans are popular with some, but I dont know if it is more than a glorified catch can.

Once I removed the filter element in my rinky dink separator, it works again.

FWIW, Andy recently posted pics of his intake since he had installed the Steeda unit, and from what I could see, it was mint inside. He catches a pretty decent amount of oil too.
 
#4
dragnazz5.0 said:
if you can fill one of those things up that fast you have blow by problems. oil separators are a band-aid fix for a bigger problem. but if there is just a small amount of oil in it than its worth it...but if you fill up one of those small containers than something needs to be fixed
Click to expand...

Do you think that having open breathers (one in each valve cover) while the pcv is still connected, have any affect on how fast those little separators fill up? Mine fills up fairly quickly as well and the motor only has like 3000 miles on it
 
#5
you have blow by problems
Click to expand...

I wouldnt 100% agree with that. I can fill mine pretty quickly, but all my cylinders are within 2 or 3% of each other on a compression test.

I agree something odd is causing it, but from what Ive seen with my motor, blow by does not seem to be the cause. I never had an issue until I swapped intakes, now the pcv cant stop sucking oil out of the engine. I dont know if/why a different lower intake would increase vacuume that much, but Im at a loss as to my particular issue.
 
#8
bock said:
how does this thing look like?

i want it! :D
Click to expand...

Home Depot has 2 models available, both of which can be found about half way down this page.

Another Question -
What is the part number for the pcv screen on a 351w Lightning?
I hope someone can look this up for me, as I am hitting a brick wall with parts stores.:bang: :bang: :bang:
I purchased one for a 302 and the diameter is too large to fit in my intake.

I have done a leakdown test, and all numbers looked good. All were 3-5% leakdown. This is a fresh motor with Gapless second rings. I have been told that some of theGapless rings require an evac pump to seal properly (but I have not been answered as to why).

I have hooked up a Ford truck pump (it bolted right in), but it pulls far too much vac. Most places say you should have up to 15" at wot/load, and be in the single digits at idle. The first pulley I used gave me nearly 20" at idle, and the smaller pulley gave me about 14" at idle. I have not been able to check the vac at speed/load. I am running the smaller pulley now.
I will put in some kind of restrictor today in an attempt to further limit airflow out of the crankcase. There are commercially available vac limiters (kinda like a blowoff valve in function), but they run a minimum of $60-$70. I know many people have similar problems so I am looking for a low cost alternative to the $500-$1k evacuation kits.

By all accounts these air pumps will burn up fairly quick if large amounts of oil are allowed to pass through them, so I need a very good separator in line before the pump.
I am pushing about a quart of oil a day (less than 50miles) through the pump, but the Home Depot separator is not picking up ANY oil. I have stuck some filter material in the bowl, so maybe it will do better today? If it does well, I may just add several of these in series.



Hissin-
I will Google the Jaz can
thanks

I appreciate all the replies.
Feel free to post any ideas or thoughts, as I could use the help at this point.

Thanks
jason
 
#11
I used the same one as Kevin (or at least the same one that is in the lead post over at SVT). Kevin, you have a different perspective about this thing so let me pick your brain. :D

First off, if you see accumulation drop off, check that filter. I initially had an accumulation of maybe a teaspoon, then it stopped. Once I removed the element, I am accumulating again. You probably wont have the same issue, but just in case......

And a lot of you snake guys like synthetic oil. That separator says not to use it - do you know if folks have had issues (I dont know if the issue would be with the filter or with the oil eating the basin)?

You guys know I beat this stuff more than it should be beat. Sorry.
 
#12
I read that before I put mine in and took out the filter as soon as I got it. This is for the mesh type filters that come with most seperators.

I then tried a metal filter but it did not accumulate as much as without it. So no filter for me.:)

Thanks for the insight JT.:nice:
 
#14
04sleeper said:
I read that before I put mine in and took out the filter as soon as I got it. This is for the mesh type filters that come with most seperators.

I then tried a metal filter but it did not accumulate as much as without it. So no filter for me.:)

Thanks for the insight JT.:nice:
Click to expand...
Thanks for your insight. Now I wont wonder how yours works so well and mine doesnt. :bang: :)

I had been meaning to try a metal element (sintered bronze perhaps) but never got around to it. Sounds like I dont need to bother. Thanks for sharing that. :nice:
 
#16
For you guys that are removing the element from the separator you may catch more oil in the bowl but at some point but I would think that once it starts to fill up the oil can climb up the wall of the bowl and into the intake tract.

I read on SVT forum that there is a bigger pressure drop with the filter removed thus allowing the oil to fall to the bottom of the bowl and not drop off on accumulation as much as with the filter in. Some suggesting using a bigger unit to hold more oil but wouldn't that make the pcv system somewhat less effective (a weaker vacuum)?
 
#17
blackcloud50 said:
For you guys that are removing the element from the separator you may catch more oil in the bowl but at some point but I would think that once it starts to fill up the oil can climb up the wall of the bowl and into the intake tract.

I read on SVT forum that there is a bigger pressure drop with the filter removed thus allowing the oil to fall to the bottom of the bowl and not drop off on accumulation as much as with the filter in. Some suggesting using a bigger unit to hold more oil but wouldn't that make the pcv system somewhat less effective (a weaker vacuum)?
Click to expand...
I don't think a bigger unit would affect anything as far as being a weaker vacuum. As long as the system and connections are sealed and don't have any leaks.

I just drain mine after about an inch of accumulation and don't let it get any higher than that so it's really not close to the top. I don't think it is climbing up the wall and getting back into the tract. Thats why I empty mine early.

I'm sure a very little bit still gets by but the majority is removed.

It's better than not running it at all and getting all of it.:nice:
 
#18
04sleeper said:
I don't think a bigger unit would affect anything as far as being a weaker vacuum. As long as the system and connections are sealed and don't have any leaks.

I just drain mine after about an inch of accumulation and don't let it get any higher than that so it's really not close to the top. I don't think it is climbing up the wall and getting back into the tract. Thats why I empty mine early.

I'm sure a very little bit still gets by but the majority is removed.

It's better than not running it at all and getting all of it.:nice:
Click to expand...

There would be a weaker vacuum to some degree...just not sure how much it would affect the pcv performance. Let's just say for an extreme example you were using a separator the size of a outside trash can. How much air (vacuum) do u think you would feel moving if you pulled the pcv valve out of the lower intake to check? Most likely very little I suppose.

Does this make since?
 
#19
blackcloud50 said:
There would be a weaker vacuum to some degree...just not sure how much it would affect the pcv performance. Let's just say for an extreme example you were using a separator the size of a outside trash can. How much air (vacuum) do u think you would feel moving if you pulled the pcv valve out of the lower intake to check? Most likely very little I suppose.

Does this make since?
Click to expand...
I get where you are comming from. :nice:

I just don't think it will make that much difference with the ones that are a little bigger except for being able to hold more oil.

If you need a garbage can size one I think you may have a blowby problem.:rlaugh:
 
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