Idiots guide to breathers
09 September 2004, 11:13 AM
#1
Scooby Regular
Thread Starter
iTrader: (15)
Join Date: Jul 2001
Location: Portsmouth
Posts: 8,606
Likes: 0
Received 0 Likes
on
0 Posts
Idiots guide to breathers
Ive read the thread re: pcv and catch cans and it all makes sense (sort of).
what I could really do with (as Im sure could many others) is an idiots guide to catch can connections.
put a into b, twist c and blank off d with a plug sort of thing.
maybe with a couple of pictures?
your help is greatly appreciated.
(I will be using a coke bottle first off, maybe upgrading to a shiney catch can in the future)
what I could really do with (as Im sure could many others) is an idiots guide to catch can connections.
put a into b, twist c and blank off d with a plug sort of thing.
maybe with a couple of pictures?
your help is greatly appreciated.
(I will be using a coke bottle first off, maybe upgrading to a shiney catch can in the future)
09 September 2004, 12:43 PM
#2
Scooby Regular
Join Date: Apr 2003
Location: South Bucks
Posts: 3,213
Likes: 0
Received 0 Likes
on
0 Posts
Somewhere.... maybe on 22B, there was a similar discussion recently that incorporated some very nice diagrams.
In fact it was THIS one........
http://bbs.22b.com/cgi-bin/ultimateb...=000226#000000
In fact it was THIS one........
http://bbs.22b.com/cgi-bin/ultimateb...=000226#000000
09 September 2004, 12:51 PM
#3
Scooby Regular
Join Date: Oct 2002
Location: North Staffs. UK
Posts: 2,046
Likes: 0
Received 0 Likes
on
0 Posts
I'll ask a stupid question too, then...
Why can't I simply take the 2 pipes out of the air-intake pipe, fit breather filters to them (on the end of the pipes) and block the holes in the air-intake ?
Mark
Why can't I simply take the 2 pipes out of the air-intake pipe, fit breather filters to them (on the end of the pipes) and block the holes in the air-intake ?
Mark
09 September 2004, 02:50 PM
#6
Scooby Regular
Join Date: Oct 2002
Location: North Staffs. UK
Posts: 2,046
Likes: 0
Received 0 Likes
on
0 Posts
Tony - err - thanks - so why does anyone replace the pipework etc ? - I can understand it if you're fitting a can, but in the 'AndyF' stylee installation >?
Mark
Mark
09 September 2004, 02:53 PM
#7
Drag it!
iTrader: (1)
Join Date: Jun 2002
Location: Flame grilled Wagon anyone?
Posts: 9,866
Likes: 0
Received 0 Likes
on
0 Posts
Simple reason there mark, is most that vent to atmos, actually vent it under the car, therefore need the pipes to create the length to do it.
Simply adding breathers vents the vapour and the stench into the engine bay, which you subsequently smell.
Vented under the car, you dont!
Simply adding breathers vents the vapour and the stench into the engine bay, which you subsequently smell.
Vented under the car, you dont!
Trending Topics
09 September 2004, 03:16 PM
#10
Scooby Regular
Join Date: Oct 2002
Location: North Staffs. UK
Posts: 2,046
Likes: 0
Received 0 Likes
on
0 Posts
Thank you Kindly 
Peanuts, I'll try and take lots of pics..... - I think that the main problem is the dilution of the info - i.e. lots of other useful info, so no precise 'doing it' guide...
Should be easy enough, just a matter of getting under the bonnet and not messing with other stuff (in my case - this week - replace D/V 3 times, fit bonnet vent scoop, replace MAF boost hose)..
Mark
Peanuts, I'll try and take lots of pics..... - I think that the main problem is the dilution of the info - i.e. lots of other useful info, so no precise 'doing it' guide...
Should be easy enough, just a matter of getting under the bonnet and not messing with other stuff (in my case - this week - replace D/V 3 times, fit bonnet vent scoop, replace MAF boost hose)..
Mark
09 September 2004, 04:15 PM
#11
Scooby Regular
Thread Starter
iTrader: (15)
Join Date: Jul 2001
Location: Portsmouth
Posts: 8,606
Likes: 0
Received 0 Likes
on
0 Posts
thanks, its all good info contained within as you say
just dont need all that good info, a simple do it this way guide.
I get the idea in principal.
run some hose from both cam breathers, "t" piece them together and stick that into a bottle somewhere over by the battery.
run hose from crank breather into bottle also.
have a bigger bore pipe from bottle down to front arb (vta) to prevent pressure build up I guess.
what do you then do with the holes you've left behind?
just dont need all that good info, a simple do it this way guide.
I get the idea in principal.
run some hose from both cam breathers, "t" piece them together and stick that into a bottle somewhere over by the battery.
run hose from crank breather into bottle also.
have a bigger bore pipe from bottle down to front arb (vta) to prevent pressure build up I guess.
what do you then do with the holes you've left behind?
09 September 2004, 04:24 PM
#12
I should be getting my oil catch can tommrow....
http://bbs.scoobynet.co.uk/showthread.php?t=345530
See the link above...has further links, have not had a proper read but looks usefull...
Sam
http://bbs.scoobynet.co.uk/showthread.php?t=345530
See the link above...has further links, have not had a proper read but looks usefull...
Sam
09 September 2004, 05:11 PM
#13
Drag it!
iTrader: (1)
Join Date: Jun 2002
Location: Flame grilled Wagon anyone?
Posts: 9,866
Likes: 0
Received 0 Likes
on
0 Posts
Basically, on most MY99 scoobs you have the following.
Each cam breather joins a metal pipe after about 6 inches.
These 2 metal pipes, are actual one, but it t's off as it runs under the inlet manifold (hard to see and hard to get at), from the t piece it then runs under the inlet manifold via the back of the alternator and joins the, intake pipe just behind the power steering pump and resevoir.
The crank Breather vents via a t pice which is 3/4,3/4,1/2 inch in bores. The 1st 3/4 inch is where the breather port joins the t piece, the 2nd 3/4 goes off to the pcv valve underneath the throttle body, the 1/2 goes straight up and into the intake pipe just before the turbo.
Easiest way, keeping the pcv valve in place.
Remove the 1/2 in pipe that goes between the crank breather t piece and intake pipe mentioned above. Block the end up that was attached to the t piece with a suitable sized bolt and jubilee clip, and then place it back onto the intake pipe.
Now join 1/2 pipe to the t piece, and run a length of pipe to your chosen location, via your chosen route (depends how fussy you are) to your catch can/lower arb.
Remove alternator, especially if you have air con, and it will give you better access to the pipe running from your factory cam t piece to the intake pipe, remove it from the intake pipe behind the power steering pump, leave it attached to the factory t piece.
Hold the end which you removed from the intake pipe, and cut it approx 6 inch from this end (doesnt have to be 6 inch) and with thhe 6 inch pipe, insert a bolt into the cut end, and jubilee clip tight, then put the other end back onto the intake pipe behind the power steering pump.
With the remaining pipe that comes from the factory t piece, join it to a new piece of 1/2 inch pipe and run it to your chosen location, via your chosen route to your catch can/lower arb.
If these 2 pipes are plumbed into a catch can, you then need a vent for the catch can.
If the catch can only has 2 ports, then t the 2 pipes together just before the catch can, and connect to one port, then run a pipe from the 2nd port to the ARB.
Hope that helps, from memory and specific to MY99-00
Each cam breather joins a metal pipe after about 6 inches.
These 2 metal pipes, are actual one, but it t's off as it runs under the inlet manifold (hard to see and hard to get at), from the t piece it then runs under the inlet manifold via the back of the alternator and joins the, intake pipe just behind the power steering pump and resevoir.
The crank Breather vents via a t pice which is 3/4,3/4,1/2 inch in bores. The 1st 3/4 inch is where the breather port joins the t piece, the 2nd 3/4 goes off to the pcv valve underneath the throttle body, the 1/2 goes straight up and into the intake pipe just before the turbo.
Easiest way, keeping the pcv valve in place.
Remove the 1/2 in pipe that goes between the crank breather t piece and intake pipe mentioned above. Block the end up that was attached to the t piece with a suitable sized bolt and jubilee clip, and then place it back onto the intake pipe.
Now join 1/2 pipe to the t piece, and run a length of pipe to your chosen location, via your chosen route (depends how fussy you are) to your catch can/lower arb.
Remove alternator, especially if you have air con, and it will give you better access to the pipe running from your factory cam t piece to the intake pipe, remove it from the intake pipe behind the power steering pump, leave it attached to the factory t piece.
Hold the end which you removed from the intake pipe, and cut it approx 6 inch from this end (doesnt have to be 6 inch) and with thhe 6 inch pipe, insert a bolt into the cut end, and jubilee clip tight, then put the other end back onto the intake pipe behind the power steering pump.
With the remaining pipe that comes from the factory t piece, join it to a new piece of 1/2 inch pipe and run it to your chosen location, via your chosen route to your catch can/lower arb.
If these 2 pipes are plumbed into a catch can, you then need a vent for the catch can.
If the catch can only has 2 ports, then t the 2 pipes together just before the catch can, and connect to one port, then run a pipe from the 2nd port to the ARB.
Hope that helps, from memory and specific to MY99-00
Last edited by P20SPD; 09 September 2004 at 05:14 PM.
09 September 2004, 05:20 PM
#14
so basically all we need to do is fit three new pipes 2 from the rocker covers (cam breathers) and 1 from the crank breather and vent them to atmos therefor eliminating all the original pipes and the pcv things
09 September 2004, 08:57 PM
#15
Scooby Regular
Join Date: Oct 2002
Location: North Staffs. UK
Posts: 2,046
Likes: 0
Received 0 Likes
on
0 Posts
Stevey - eliminating the pcv brings a whole hosts of other points -
The guide is for the simplest solution, whilst retaining the valve (see AndyFs+others points regarding off-boost air draw back to crank).
Steven, thanks for that very detailed install guide - I'll give it a go when I get chance (maybe this weekend, as I'm putting my oem D/V back on...) - and I'll add to this post with any 98my differences..
Mark
The guide is for the simplest solution, whilst retaining the valve (see AndyFs+others points regarding off-boost air draw back to crank).
Steven, thanks for that very detailed install guide - I'll give it a go when I get chance (maybe this weekend, as I'm putting my oem D/V back on...) - and I'll add to this post with any 98my differences..
Mark
01 April 2005, 05:29 PM
#18
Bob:
Mine went like this.
1
Short pipe from crankcase breather (NOT the one that goes to the inlet manifold Valve) Fit a T joint there (I used aquatic centre, B&Q no good)
2
From one cam cover breather link pipe from the cover to one leg of the T.
3
From the free leg of the T runa short pipe close to the fuel filter of the engine bay.
Fit a T there on the pipe.
4
Run a pipe from the cam cover to the T above.
5
From the only spare leg on the T left, run a pipe to a catch can mounted under the Fuel Filter. This can collects the condensed oil vapour. Empty at regular intervals.
So easy when you do it.
If that doesn't help then i will draw it and post it here, just let me know.
Graham
Mine went like this.
1
Short pipe from crankcase breather (NOT the one that goes to the inlet manifold Valve) Fit a T joint there (I used aquatic centre, B&Q no good)
2
From one cam cover breather link pipe from the cover to one leg of the T.
3
From the free leg of the T runa short pipe close to the fuel filter of the engine bay.
Fit a T there on the pipe.
4
Run a pipe from the cam cover to the T above.
5
From the only spare leg on the T left, run a pipe to a catch can mounted under the Fuel Filter. This can collects the condensed oil vapour. Empty at regular intervals.
So easy when you do it.
If that doesn't help then i will draw it and post it here, just let me know.
Graham
Last edited by 911; 01 April 2005 at 05:30 PM. Reason: spelling
01 April 2005, 07:48 PM
#20
Subaru Tuning Specialist
Join Date: Jun 2002
Location: 7.74 @179 mph 1/4 mile - road legal
Posts: 6,654
Likes: 0
Received 1 Like
on
1 Post
Not sure if it was graham or justin that sketched this but it's as simple as it gets
If you are not fitting a catch tank, just leave it out and still route the pipes the same way
Andy
If you are not fitting a catch tank, just leave it out and still route the pipes the same way
Andy
02 April 2005, 11:42 AM
#23
Scooby Regular
Join Date: Aug 2004
Location: east sussex
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
does anyone know if this would be any good cant remember where i saw it but this is what i was thinking of doing http://i2.photobucket.com/albums/y35...boostguage.jpg
rob
rob
02 April 2005, 05:08 PM
#25
Just done it (I think).
What I did. On the metal tee from under the manifold I have put new pipe on it and run it to the ground. The old pipe (which goes to intake) has been blocked off with a bolt and jubilee.
I removed the two pipes from the cam breathers (or what I think are the cam breathers - oiled nozzles on either side of the engine) and blocked them off. Have put new pipes on the nozzles from cam breathers and run them to the ground also.
Didn't see any need to remove the alternator or anything. Everything was easily to get to.
How does this sound?
Bob
MY99/00
What I did. On the metal tee from under the manifold I have put new pipe on it and run it to the ground. The old pipe (which goes to intake) has been blocked off with a bolt and jubilee.
I removed the two pipes from the cam breathers (or what I think are the cam breathers - oiled nozzles on either side of the engine) and blocked them off. Have put new pipes on the nozzles from cam breathers and run them to the ground also.
Didn't see any need to remove the alternator or anything. Everything was easily to get to.
How does this sound?
Bob
MY99/00
02 April 2005, 05:12 PM
#26
Scooby Regular
Join Date: Aug 1999
Location: North London, Xbox Live Gamer Tag: Jake Shiney
Posts: 1,621
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by BOB'5
Just done it (I think).
What I did. On the metal tee from under the manifold I have put new pipe on it and run it to the ground. The old pipe (which goes to intake) has been blocked off with a bolt and jubilee.
I removed the two pipes from the cam breathers (or what I think are the cam breathers - oiled nozzles on either side of the engine) and blocked them off. Have put new pipes on the nozzles from cam breathers and run them to the ground also.
Didn't see any need to remove the alternator or anything. Everything was easily to get to.
How does this sound?
Bob
MY99/00
What I did. On the metal tee from under the manifold I have put new pipe on it and run it to the ground. The old pipe (which goes to intake) has been blocked off with a bolt and jubilee.
I removed the two pipes from the cam breathers (or what I think are the cam breathers - oiled nozzles on either side of the engine) and blocked them off. Have put new pipes on the nozzles from cam breathers and run them to the ground also.
Didn't see any need to remove the alternator or anything. Everything was easily to get to.
How does this sound?
Bob
MY99/00
