Yes another catch can filling up question.......

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Old Aug 18, 2007 | 09:37 PM
  #1  
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Default Yes another catch can filling up question.......

Sup guys........ im just trying to make sure i dont have any internal issues with my motor. It runs awesome and i dont feel that there has been a drop in power, but lately my catch can has been starting to fill up. The catch can is a modified greddy unit with breather on top. To put it in perspective i made about 4-5, 2nd thru 4th gear pulls and the can filled up about 1/3qt when i drained it. Anything to be worried about here?

Here is how i have my lines running to my can. One is coming off the valve cover port (oem port), and the other is coming from the drivers side port on the back of the block using the honda port you get from the stealership. I still have my oem breather box installed with everything capped off except the pcv valve and the port next to it.

Power is in the 300whp range and about 10psi of boost on a t3/t04e. Eagle rods, CP's etc etc about 4kmiles on the rebuild.

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Old Aug 19, 2007 | 01:54 AM
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Default Re: Yes another catch can filling up question....... (slooogsr)

yup, thats normal when you take it off the port on the back of the block.
run 2 lines off the valve cover, works much better (not alot of oil etc)
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Old Aug 19, 2007 | 06:07 AM
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Default Re: Yes another catch can filling up question....... (haydenpothoven)

i pull mine out of the back of the block. after a few days of street driving it will fill the catchcan a few inches deep, probably 1/4 quart. funny part is that the can will fill quick to that amount and then it doesnt fill much more after that
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Old Aug 19, 2007 | 06:36 AM
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Default

not much need for a catchcan at 300whp , and from your pics , looks like you need to mount the catch can higher/further back in the engine bay. you want to mount it as high as possible
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Old Aug 19, 2007 | 08:06 AM
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Sweet, thanx for the responses........

I will look into doing some venting from the valve cover and moving the can to the back of the engine bay..........
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Old Aug 19, 2007 | 09:31 AM
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Default Re: Yes another catch can filling up question....... (slooogsr)

well.. thats what happens when you have a hole in the back of the block, oil will shoot right out, you would loose less if its raised higher as already mentioned. and what you got maybe too restrictive. valve cover fittings doesn't need to connect to a catch can. if filter on top of catch can is too small or clogged will make it more restrictive, and relieving pressure into can filled with oil isn't as effective as empty can.

my ventilation consist of 3 valve cover points, no catch cans and no oil spills either. plus pcv valve connected to IM, but.. with 2 check valves in between and bypass created using another check valve which vents under boost and allows for some vacuum to IM under vacuum.

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