catch can question

[dallasb84]

good look homie, preciate ya

[TheChosenOne]

...straight from the scriptures of Honda-Tech.
Lose the valve in the back of the block. Get a 1/4 BSPT nipple from mcmaster carr and route the line to a catch can. If you leave the valve in, it shuts under boost and the crank case pressurizes. That pressure will find another way out..... usually through the oil pan gasket or the main seals. Either plug the port in the IM or use that port as one of your vacuum sources.

http://www.honda-tech.com/showthread...ight=catch+DIY

[jdm>usdm]

...straight from the scriptures of Honda-Tech.
Lose the valve in the back of the block. Get a 1/4 BSPT nipple from mcmaster carr and route the line to a catch can. If you leave the valve in, it shuts under boost and the crank case pressurizes. That pressure will find another way out..... usually through the oil pan gasket or the main seals. Either plug the port in the IM or use that port as one of your vacuum sources.

http://www.honda-tech.com/showthread...ight=catch+DIY

Could someone further explain exactley what valve is being spoken of here? And also, exactley what does the black box on the back of the block do?

[SPOOLIN]

Could someone further explain exactley what valve is being spoken of here? And also, exactley what does the black box on the back of the block do?

the only valve is the PCV valve. The valve when it sees boost from the manifold is going to slam shut and block the air movement from the block to the manifold where it gets resucked in and burned through the engine. The black box is a liquid/vapor seperator, liquid oil collects and falls back into the block while the vapor goes up and through the pcv valve and into the manifold to get burned off and also lower your octane rating haha.

[jdm>usdm]

the only valve is the PCV valve. The valve when it sees boost from the manifold is going to slam shut and block the air movement from the block to the manifold where it gets resucked in and burned through the engine. The black box is a liquid/vapor seperator, liquid oil collects and falls back into the block while the vapor goes up and through the pcv valve and into the manifold to get burned off and also lower your octane rating haha.

Thank you sir


Im running a completey stock ls engine on 10 pounds. and The only thing I have done it terms of engine ventilation is put a breather filter on the valve cover where the old line that used to run to the intake went.

Am I hurting the motor by running it like this at low boost levels, with no catch can?


Thread jack.lolz

[SPOOLIN]

Thank you sir


Im running a completey stock ls engine on 10 pounds. and The only thing I have done it terms of engine ventilation is put a breather filter on the valve cover where the old line that used to run to the intake went.

Am I hurting the motor by running it like this at low boost levels, with no catch can?


Thread jack.lolz

not hurting anything...stock engine is only going to start producing a lot of blow by once it gets worn in from the turbo. Just get a greddy catch can or similar......does your filter on the valve cover get moist or is it oily? if it is then switch to a catch can.

[jdm>usdm]

not hurting anything...stock engine is only going to start producing a lot of blow by once it gets worn in from the turbo. Just get a greddy catch can or similar......does your filter on the valve cover get moist or is it oily? if it is then switch to a catch can.

Well I ran the filter on an old motor that stated knockin, and it was covered in oil on that one. So since Ive swapped it to the new motor I dont know if anymore oil has been added, or if its just all old. But Ill pick up a new filter and see what it starts lookin like.

I suppose that if it gets oily then Ill look into get a catch can.

I appreciate all the info man.