so CA's are blowby machines

[bentvalves]

and if your having issues filling catch cans on a healthy engine and are sick and tired of looking at all the different ways you can route the catch can/breather hoses, just stop. Allow the head to breathe from as many different points as possible to keep from filling catch cans. I have a total of 3 hoses going to a heavily vented catch, as a pose to the 1 from the factory, and now its gravy. Even revlimiter burnouts arent filling the catch can and with it setup OEM i could quickly fill a gatorade bottle no problem Im using that OEM pulsar fwd breather box thing that bolts in front of coilpack #1 as an additional point to allow the head to breathe from. If your filling catch cans on the ca18, this is THE easiest solution. Screw the PCV valve, our injectors arent spraying at all the valves anyway, and it just makes for yucky inlet valves real quick that PCV valve. Free your CA, allow the head to breathe.

[sjbsuperman1425]

pics of your setup other than the signature pic please

[Ca_Silvia]

I rock a twin catch can set up and i only fill them at drift events. 100% completely sealed system. You vent to atmosphere with a MAF system? I thought that was a huge no no

[float_6969]

You can vent the PCV to the atmosphere w/a MAFS IF you block of the PCV valve. If you don't it'll act like a boost leak under vac.

If you really want to get serious with it, it's not even the head that needs to breath. I completely eliminated the pipe under the intake that goes from the top of the oil filter mount to the back of the intake valve cover, removed and plugged the barbed fitting at the back of the intake valve cover where it comes into the head, installed a line from the top of the oil filter mount to an SR20DET's oil separator, and ran the outlet of that to a "T" that connects to the PCV valve and (when I get the new turbo mounted) a check valve that connects to the inlet of the turbo. Then I just have breathers on the 2 valve covers.

With my arrangement, fresh air is constantly being drawn in through the valve covers, down the oil drain (which should keep oil from pooling in the head) and into the crankcase.

It's not completed yet since I'm still working on making the turbo kit fit, but I had it working with the bottom mount setup and it worked very well. I may stop using the intake manifold and turbo inlet to provide suction in the future and use a dedicated vac/smog pump.

[Ca_Silvia]

Float is there a more simple design for us guys not running the SR seperator? like blocking the PCV(intake manifold) side and just slapping a small filter right on the valve cover?

[bentvalves]

float I swore the SR self draining blowby buildup collector was the solution myself. Until I tried this far easier solution. Initially, when I had only even 2 hoses going to a vented catch (intake/exhaust valve cover breather) I would fill catch cans abusing the car and designed a feed that siamesed into the turbo oil return to allow the catch to self drain back to the pan. Now with the additional breather box ontop of the head in the valley there, away from spinning camshafts, and also baffled with steps, the head is able to exhale easier, as a result it doesnt puke oil. Also, at this point I have the option of allowing my lower end to breathe via that return that I siamesed into the turbo oil return. Rally cars often do this, rally cars! It allows the turbo oil an easier time to return to the lower end when the crankcase is being pressurized on boost, and it helps alleviate the lower end being pressurized period. Its freaking awsome, they send the line right up to the top of their massive catch cans with HUGE filters on top and 13 other lines venting into it from everywhich direction.



who said they are venting their camcovers to two catch cans 100% sealed system?



makes magic happen ^ ! note the extra port that I capped. Gives you the option of a 4th venting point.


I dont have any recent pics of the setup, but its whats in my sig, with the 3rd line not shown being the exhaust valve cover which at the time of my signature photo was routed to the PCV valve. So now all 3 hoses go to a big welches grape juice bottle that has big holes melted in it everywhere for it to breathe : ) free your CA maan, allow the heead to breeeathe.

[boost_boy]

As usual, mine are open on the ehxaust side only and no puckage at 18psi w/W.O.T applications. Is it right, not really. But sure as heck lets me know how healthy my pistons and rings are. When I decide to jack-up the boost or something to that effect, I have a catch system on standby. But as of now, she spits nothing but exhaust and fire.

[bentvalves]

on boost i wouldnt normally puke, but when I started hitting rev limiter (and I love my rev limiter) the piston ring seal to the cylinder wall becomes disturbed and thats when serious blowby and ultimatley puking takes place.

[bentvalves]

p.s. Dee have you ever tuned a CA on race gas?

the amount of timing you can throw at these engines with leaded 110 is ridiculous.

the engine sounds like its on steroids idling, and in boost : )

[bimeur]

ks13:

do you gat any reference number about this blow-by from a pulsar?

THX

[r34 gtr]

Greg, where can I purchase one of those boxes state-side? I completely forgot to pick one up when I was in England a few weeks ago. Brutal.

[bimeur]

Well,I found the OEM #(founded on Nissan4U),here it is:

Separator breather: #1183085M00

Also on this car list:

SUNNY B12
Date Body Engine Grade Transmission Whl drv Area
'86, June — '88, September COUPE CA16DE TYPE ENGINE SLX TYPE 5-SPEED MANUAL TRANS 2 WHEEL DRIVE EC
'88, October — COUPE CA18DE TYPE ENGINE GTI TYPE 5-SPEED MANUAL TRANS 2 WHEEL DRIVE EC
'86, June — '88, September COUPE CA16DE TYPE ENGINE SLX TYPE 5-SPEED MANUAL TRANS 2 WHEEL DRIVE EXCEPT EC
'88, October — COUPE CA18DE TYPE ENGINE GTI TYPE 5-SPEED MANUAL TRANS 2 WHEEL DRIVE EXCEPT EC
SUNNY N13
Date Body Engine Grade Transmission Whl drv
'86, June — '88, October SEDAN CA16D TYPE ENGINE SGX TYPE 5-SP MANUAL TRANSMISSION 2 WHEEL DRIVE
'86, June — '88, October 3 DOOR HATCH BACK CA16D TYPE ENGINE SR TYPE 5-SP MANUAL TRANSMISSION 2 WHEEL DRIVE
'86, June — '88, October SEDAN CA16D TYPE ENGINE SGX TYPE 5-SP MANUAL TRANSMISSION 2 WHEEL DRIVE
'86, June — '88, October 3 DOOR HATCH BACK CA16D TYPE ENGINE SR TYPE 5-SP MANUAL TRANSMISSION 2 WHEEL DRIVE
'88, October — 3 DOOR HATCH BACK CA18D TYPE ENGINE GTI TYPE 5-SP MANUAL TRANSMISSION 2 WHEEL DRIVE
'88, October — 5 DOOR HATCH BACK CA18D TYPE ENGINE GTI TYPE 5-SP MANUAL TRANSMISSION 2 WHEEL DRIVE
'88, October — 3 DOOR HATCH BACK CA18D TYPE ENGINE GTI TYPE 5-SP MANUAL TRANSMISSION 2 WHEEL DRIVE
'88, October — 5 DOOR HATCH BACK CA18D TYPE ENGINE GTI TYPE 5-SP MANUAL TRANSMISSION 2 WHEEL DRIVE

USA
PULSAR NX KN13
Date Body Engine Trim level Transmission
'86, September — '87, July COUPE CA16DE TYPE ENGINE SE TYPE MANUAL TRANSMISSION 5-SP
'86, September — '87, July COUPE CA16DE TYPE ENGINE SE TYPE MANUAL TRANSMISSION 5-SP
'87, August — '89, August COUPE CA18DE TYPE ENGINE SE TYPE MANUAL TRANSMISSION 5-SP
'87, August — '89, August COUPE CA18DE TYPE ENGINE SE TYPE AUTOMATIC TRANSMISSION
'87, July — '89, August COUPE CA18DE TYPE ENGINE SE TYPE MANUAL TRANSMISSION 5-SP
'87, July — '89, August COUPE CA18DE TYPE ENGINE SE TYPE AUTOMATIC TRANSMISSION

BTW,THX for this trick

[r34 gtr]

Sweet! Thanks buddy! Off to the local stealership I go!

[bentvalves]

this thing does work I promise you.

[boost_boy]

p.s. Dee have you ever tuned a CA on race gas?

the amount of timing you can throw at these engines with leaded 110 is ridiculous.

the engine sounds like its on steroids idling, and in boost : )

Yes I have tuned on C16 before and have gotten great results. I would caution too much timing on this motor because of the leaded fuel as it still gets very upset when you start dialing in timing. This motor is a boost junky and it wants you to give it what you got. As long as the fuel components are up to par and tuning is within the ballpark, feed it boost instead of timing and see how she acts. Be a great opportunity to test your blowby theory as well.

[bentvalves]

I run 25 psi and throw LOTS of timing at the map when its running race gas.

[bimeur]

well,i checked at the nissan dealer shop,and it's a very expensive part for what it is > 130$

If somebody can find it and send one to me,of course i'll pay him for that....

THX

[bentvalves]

where are you located ?

[bimeur]

hehehehe!!

good question:

in France ^^

[bentvalves]

have you checked online courtesy nissan, or performance nissan parts etc?

[r34 gtr]

Hey Greg, does your car run currently? My buddy Robert wants to ride in it something awful. He's the guy who let you drive the Subaru...

[bentvalves]

yea its running better now than it ever has. you guys going to be around in the near future?

[r34 gtr]

With any luck, yes. Ill let you know.

[bimeur]

have you checked online courtesy nissan, or performance nissan parts etc?

I checked everywhere

for b13/b14/Pulsar/NX/Sentra references,there is only sr20 engine,or ga16 one

EDIT>i found it on courtesy parts,i had to write directly the reference

[bentvalves]

awsome. it should be mentioned that number one coil pack will need 2 shims on the frontmost mounting points to get the coilpack level and prevent that coil from misfiring. I epoxied the right size spacers directly to the breather box to help simplify life by keeping washers from falling down into the valley.

Ca_silvia did you rethink your catch tank setup?

[rossmac]

Is it necessary to run a breather to the intake side??

Ive got a cam cover from a CA16de which doesnt have the breather on top. Ive had to get the ca16 cam cover to help with under bonnet clearance (my ca18dets in a kit car & the hump on the cam cover hits the bonnet)

Ive also got one of the breathers that your talking about by coil pack#1 but not sure how to plumb that in

[bentvalves]

look at my pics, send any breathers you can to a heavily vented catch can. If you have a 4 port head you could consider running a breather to the PCV valve, if you have the 8 port head just run everything to a catch and cap the PCV.

[rossmac]

Why does it make a difference if youve got a 4 or 8 port head?
Also, what do you do with the crank breather by the oil filter, if that runs straight to a catch tank then where should i run the feed from the cam cover ?

[float_6969]

I ran the crank breather to an SR20 oil separator and I have so little blowby that makes it up to the head now that I just have it left open to the atmosphere, but you could also connect both sides together and run them to a vented can if you'd like too.

[Ca_Silvia]

Ca_silvia did you rethink your catch tank setup?

I thought about it but ultimately left it how i have it. Main reason is this idea it a good one, i just don't have easy access to welders to motify the oil return nor do i want to source the breather box.

My setup up works very well and i only fill my exhaust side catch cans at track events which is to be expected. And since i install my system it has cut down the oil in the intercooler pipes significantly. Why fix it if it ain't broke, right?