well my question is WHEN should you use a catch can. does a normal d-series turbo'd at <10psi need one do you think, and if i don't use one what will happen?

thanks

 

?

 

the stock PCV system was not ment to see boost.

during boost your really dont have good ventilation. Over time this has been know to cause engine problems such as oily intake system causing detonation,

also I THINK not having proper ventilation under boost can cause your rings to wear faster.

platinum.

 

I simply disabled my PCV valve and ran a hose from the black box to the ground. Works fine with my D16Y8 on 15psi.

FYI, the black box is a "catch can," just not quite as nice as an aftermarket one.

 

The PCV system was not intended for boost (like everything else) and you have to re-route it. I tried to find an article I read on it but couldn't, it had information and said it can contribue to ringland failure. I'll keep lookin for it though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flood &raquo;</TD></TR><TR><TD CLASS="quote"> I'll keep lookin for it though. </TD></TR></TABLE>

please do...i am wondering if this is causing my oil leak problem

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanCivic2000 &raquo;</TD></TR><TR><TD CLASS="quote">I simply disabled my PCV valve and ran a hose from the black box to the ground. Works fine with my D16Y8 on 15psi.

FYI, the black box is a "catch can," just not quite as nice as an aftermarket one.</TD></TR></TABLE>

Did you just take off the hose that attached to the pcv valve and attach another hose from the pcv to your catchcan to the ground? can you explain how you did the pvc part, thanks

 

you need to unhook your pcv valve from your intake manifold. When your honda was stock it would suck air from the crankcase so pressure would never build up. Well now that your boosting, If you leave the pcv valve hose hooked to your intake manifold youll be putting pressure against the pcv valve in turn the one way valve won't let the pressure out of your crankcase. which is what will blow out your ringlands. So unhook the tube that runs from your pcv valve to your intake manifold and plug the hole on the intake manifold. leave the hose from the pcv valve unhooked to anything to let it vent to the atmosphere.

Thats what I understand. correct me if i'm wrong.

 

thats sounds easy enough.......... did anyone else do this with thier engine??

thanks guys

 

think imma try it since i have no catch can.

anyone with pics of how u guys do it without an catch can?


Modified by Ignitecivic at 7:14 AM 3/2/2005

 

yeah you would have to plug the IM side and run the line from the pcv to the catch can but on the other end of the can you need a vac source if you want it to operate best. some people run a fitting to the intake pipe, pre turbo.

 

kindof like this half assed diagram??

 

what everyone is saying about the pcv valve not opening during boost is true. if it does not open there is no way to vent pressure in the crankcase- not a good thing.

here is what i did with my last turbo setup, and what ill be doing again.

i left the pcv system stock- this way it functions properly under vacuum conditions.

then, i took the breather hole on the valvecover and ran that to one side of a catchcan( i got the 49 dollar one from roadrace engineering ). the other side of the catchcan i ran to a vacuum source. it is important to remember that when boosting(which is when this setup will be needed most), the only vacuum you will have will be from the air filter to the turbo inlet hole. this provides "suction" to help remove gasses from the motor that the pcv valve cant do because it is closed.

im sure there are better ways, and that what i said isnt the best, but it worked for me

 

Man everybody and there complicated setups lol. I run it the same way a few others run it and I have yet to ehar about anything bad.

Block off IM nipple.

Run new line from black bose and point it at the ground.

Run new line from valve cover nipple and point it at the ground.

DONE

Use clear hoses so you can take a look at them every once in a while to see how covered in oil they are. If it's just lightly brown. That's just oil vapors. If it's really soaked and covered with oil inside, well your motor is not that healthy then lol.

I run this exact setup. No problems.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by staticchmbr &raquo;</TD></TR><TR><TD CLASS="quote">kindof like this half assed diagram??

</TD></TR></TABLE>

Please tell me you didnt bully a little 1st grader into drawing your picture!

 

what do you use to block off the intake manifold nipple?

 

Anyone ever tried running a "T" from the line coming from the black box and on the side where the "T" splits in 2, run 1 side to the pcv valve-&gt; to intake mani as stock an the other side 2 to the ground? This way the PCV valve functions normally under vaccum and when under boost just blow out the stuff on the open side 2?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16Civic93 &raquo;</TD></TR><TR><TD CLASS="quote">what do you use to block off the intake manifold nipple?</TD></TR></TABLE>
you can buy vacuum plugs/caps from an automotive store. i bought muine from a local NAPA

 

My rings started going, (oil and smoke, lots of it) Checked my PCV and it was wicked clogged, catch can or something besides stock is a must I have decided.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackeg &raquo;</TD></TR><TR><TD CLASS="quote">what everyone is saying about the pcv valve not opening during boost is true. if it does not open there is no way to vent pressure in the crankcase- not a good thing.

here is what i did with my last turbo setup, and what ill be doing again.

i left the pcv system stock- this way it functions properly under vacuum conditions.

then, i took the breather hole on the valvecover and ran that to one side of a catchcan( i got the 49 dollar one from roadrace engineering ). the other side of the catchcan i ran to a vacuum source. it is important to remember that when boosting(which is when this setup will be needed most), the only vacuum you will have will be from the air filter to the turbo inlet hole. this provides "suction" to help remove gasses from the motor that the pcv valve cant do because it is closed.

im sure there are better ways, and that what i said isnt the best, but it worked for me</TD></TR></TABLE>

this is very good information. i can see why my last D15b was not very healthy. i myself am using a D16a for my newish turbo setup, but have not swapped it in yet.

I do have a Cusco oil catch can I plan to use. I was using a breather on my presvious setup as well. I will run my catch can like you, and route the hose to the turbo intake. thanks a lot for that info.

One thing I have seen in the past is the Endyn (www.theoldone.com) would tap the block on a d-series (does not come with freeze plug like b-series) for his catch can setups. does anyone know how this was, or could be done? I tried creating a username for the Endyn forums, but have been unsuccessful.

 

What would you recomend for someone who doesn't have an intake pipe on their turbo?

I have a filter directly clamped onto the turbo inlet so I can't run one line from the catch can to a vacuum source...

Should I just do this?:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tchleung &raquo;</TD></TR><TR><TD CLASS="quote">
Block off IM nipple.

Run new line from black bose and point it at the ground.

Run new line from valve cover nipple and point it at the ground.

DONE

</TD></TR></TABLE>

 

bump

good info

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by staticchmbr &raquo;</TD></TR><TR><TD CLASS="quote">kindof like this half assed diagram??

</TD></TR></TABLE>

in that image you have the pressurized line to the catch can coming from the PCV valve on the head, right? Should I leave the breather on the valve cover, and run it like that?

or, could i block that off, and run the hose from the valve cover to the catch can? would doing that not relieve as much pressure as from the point on the head?

please comment

 

ttt

 

my setup.. works just fine.. no filter so theres not restrictions.. i'd like to add 2 more holes when time allows