Have a b20/vtec. B16 head, mid 9 CR. Now ready to figure out how I want to set up the release of the crankcase presure/vapor. Don't plan to run the hose from the valve cover to the intake tract.

My two ideas.

1. Using a fitting on the front of the valve cover to a fitting on the exhaust with a check valve inline.


2. (one I was leaning more towards) Using two outlets from the front of the valvecover to a catch can with breather on top.
Example:


Would either of those two alone be suffcient enough to properly vent?
Thanks

 

i dont understand how the first one would work

 

Would either of those vent the pressure from the crankcase? Wouldnt it only vent the valvecover as on other blocks the breather box is actually on the block? Bump because i wanna know to

 

The exhaust would create a vacuum and suck oil vapors out

The head of cource has oil passages that connect to the crankcase, so yes they would both vent pressure.

 

Still wondering if either of those two alone be suffcient enough to properly vent the crankcase without anything addtional.

 

With a low CR ls/vtec either one would be more than adequate.

 

If i were you i would just use the freeze plugs in the back of the block to vent the pressure. Its more effective and just as easy.
You need to get 2 fittings from a b20 prelude block (old school lude) and take out the plugs and replace with the lude fittings. Then run the 2 lines to the catch can.

 

I am running the same set up as #2

In the pic above You notice he is running the Endyn crank case breather set up and a custom breather set up on the head.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rolow &raquo;</TD></TR><TR><TD CLASS="quote">I am running the same set up as #2

In the pic above You notice he is running the Endyn crank case breather set up and a custom breather set up on the head. </TD></TR></TABLE>

So you only have the valve cover set up and thats working well?
What motor set up?

 

Tbone is also running the same as #2

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 275Performance &raquo;</TD></TR><TR><TD CLASS="quote">

So you only have the valve cover set up and thats working well?
What motor set up?</TD></TR></TABLE>

No I am running the Endyn crank case set up and the custom valve cover set up.
4 total breather points 2 in the crank case 2 in the head.

its a b20/vtec

 

i don't know if you've seen this but it is where I got my set up

http://www.theoldone.com/articles/badtothebone/

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rolow &raquo;</TD></TR><TR><TD CLASS="quote">i don't know if you've seen this but it is where I got my set up

http://www.theoldone.com/articles/badtothebone/</TD></TR></TABLE>

Yea I have seen Endyn's and Z10's. Both very nice. I was just wondering if using one of the two methods in first post would be suffcient enough.

 

I would run the crank case set up first. Then add the head breather later.
The b20 block does not have a stock breather box or pcv set up. That's why I chose the endyn kit. Like some one mentioned above you can get the Prelude fittings or the -AN fittings from Z10 and piece together your own set up. Your ring will thank you in the long run.

I noticed a difference when I added the second breather kit (head) to my motor. That's why I would recommend both especially if you plan on revving the motor past the stock b20 red line.

 

so the endyn kit is that the breather kit for the head that has the 2 fittings on the front of the valve cover as in pic #2 or does that come with the fittings for the block as mention earlier?

 

the Endyn kit is a crank case breather kit

http://www.theoldone.com/components/breather/

 

wow ... awesome thread.


i'm gonna have an 81.5 mm, 12.5:1 CR ration b18c5 block b16a2 head setup, fully built ... what kind of setup should i be looking into ?


Bump for more answers.

 

thanks rolow i understnad now Is it optional to run the pcv valve or the filter on top of the can which would be better fro the crankcase ventilation?

 

Is there anywhere you can get the ENDYN Breather kit for cheaper than listed on their website?

And also, where does the bottom fitting on the breather tank go? where does it lead too?

In fact where do the other 2 lead too on the block?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KlawzOfDeath &raquo;</TD></TR><TR><TD CLASS="quote">Is there anywhere you can get the ENDYN Breather kit for cheaper than listed on their website?

And also, where does the bottom fitting on the breather tank go? where does it lead too?

In fact where do the other 2 lead too on the block? </TD></TR></TABLE>

Here is hose routing:
http://www.theoldone.com/artic...g.jpg


I have deicided to go with the Endyn kit.

 

Awesome thanx...


So there's 2 lines to the crank? and then one is Tee'd off to the bottom nipple. right? or am I missing some part of the picture?

 

275Performance
The first picture is my boy Matt "vtecjun" (intec, he's a koo guy). The picture you see there is his drag crx.

Back to the disscusion. I would say that both set up works good, i would recommend the first picture if your intention is for racing for lighter weight (valve cover have a baffle). It really doesn't matter as long as the set up vent's out of the block. Endyns Breather kit is a pretty cool set if you have a header that isn't goin threw your fender. I beleive he's using the endyn setup for the crankcase ventalation, i'll ask him later and let you know sup.

KlawzOfDeath
yes theres a cheaper way to make a breather kit http://www.jegs.com has the morosso breather tank it's on page 54 on the newest catalog part# 710-85465. (don't ask me how i know it LoL) for $74.99 per tank without shipping and handling as for the plugs for the rear of the block the Honda part number is 11107-PK2-003

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 275Performance &raquo;</TD></TR><TR><TD CLASS="quote">

Here is hose routing:
http://www.theoldone.com/artic...g.jpg


I have deicided to go with the Endyn kit. </TD></TR></TABLE>

Sorry, i have a couple of questions, i see in the pic that one hose is tee off with teh bottom fitting. Is the two holes on back of the block, PUSHING pressure out? Is any of the lines sukin air or just pushing...

If they are just pushing pressure out, will a car with 11.5 comp or even the mid 9 comp have enough pressure to push vapors out? Would a catch can with a vent on top to suk air out also, with a filter in between be needed? I know a turbo car can have enough pressure to push vapors but what about a all-motor?

Sorry, i was always told that an all-motor car should use the system like #1...was i mis-led?

 

The top of the can has a pcv valve in it and a hose runs from that to the intake manifold where the pcv hose normally runs which create's vacuam

 

NAPIER
If you look close it the hose to from the pcv valve is routed to the intake manifold. It just looks like that its goin to the valve cover, the line routes underneath the (PCV Valve) hose to the intake. More than meets the eyes!