guys with vented rocker covers inside
Thread Starter
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
Every thing is good so far. I live in parkcity UT and we've gotten about 200" of snow in the past 2 months so the cars been sitting in my shop for the winter. I put about 100 miles and 20-30 6k shifts on it and no more oil on the engine and the timing cover seal hasn't moved. Here's the finished pics.
http://mycarpics.shutterfly.com/241
The hose on the right goes to the front driver side rocker cover and the hose on the left goes to the rear of the driver side rocker cover. PCV nipple on the intake is capped and the rear passingers side rocker cover hole is plued.
http://mycarpics.shutterfly.com/241
The hose on the right goes to the front driver side rocker cover and the hose on the left goes to the rear of the driver side rocker cover. PCV nipple on the intake is capped and the rear passingers side rocker cover hole is plued.
ive been reading through this thread and i want to eliminate my pcv system and run a vented can off of each cover i was just wondering would this be a good system for just about a daily driver and long drives. or would a seal can be more practical
Thread Starter
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
The reason for the vented catch can is to exhaust the crank case pressure, so the sealed unit wouldn't be helping. I and many others pushed seals out of the engine with the stock pcv system and its not fun!!! I dont see the need for 2 cans, I vented both sides to one can and haven't had any seals pushing out or any more oil mess.
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
if you increase the size , or number of puke tank lines, the velocity will decrease, and no "blow" as much oil out..
also,
if you cannot put a 'steel wool' pre screen inline,
try a baffel of some sorts , so the oil has to turn corners, and then may not be explelled out the line.
ash
also,
if you cannot put a 'steel wool' pre screen inline,
try a baffel of some sorts , so the oil has to turn corners, and then may not be explelled out the line.
ash
TECH Apprentice
Joined: Jan 2008
Posts: 366
Likes: 0
From: Gladstone, Queensland, Australia
I had issues in another race car i owned, engine ws fresh but used to push oil out the seals etc after a caining. It had 2 breathers on the rocker cover no baffles that routed to a catch can located above them, and it still would push oil out. What I figured was that there was a lot of oil in the rocker covers at higher rpm trying to drain back to the sump creating more resistance for the gases to escape so I fitted a dash 10 line to the mech fuel pump block off plate at the front of the sump(so oil runs to the rear whilst full throttle) and it allowed an effective pressure relief and this fixed the issue. Just some food for thought.
Thread Starter
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
I had issues in another race car i owned, engine ws fresh but used to push oil out the seals etc after a caining. It had 2 breathers on the rocker cover no baffles that routed to a catch can located above them, and it still would push oil out. What I figured was that there was a lot of oil in the rocker covers at higher rpm trying to drain back to the sump creating more resistance for the gases to escape so I fitted a dash 10 line to the mech fuel pump block off plate at the front of the sump(so oil runs to the rear whilst full throttle) and it allowed an effective pressure relief and this fixed the issue. Just some food for thought.
my old car i ran a breather on the driverside valve cover,capped the rear pass valve cover and ran a line from my front pass valve cover to my non vented catch can to the intake manifold. Never had a problem.no pcv valve either
input on this setup tho? cause my new car needs a new setup
not a FI car tho
input on this setup tho? cause my new car needs a new setup
not a FI car tho
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I just took an old sweat ban that I use when playing tennis and stuck it over the breather filter and it catches and oil and still lets the pressure build up out and then just take it off and wash it out.
i use a ck valve in the line to the d/s pcv valve, and a screw in breather where the oil filler is on the pass side-i run around 12 lbs boost, always dry as a bone(Procharger/carb)
Thread Starter
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
Thread Starter
Joined: May 2004
Posts: 6,492
Likes: 6
From: Back in the Burg
You dont want oil going through the pcv system and in to the intake manifold, the oil can cause detonation. So the catch can will keep the oil from reaching the intake. In my case the stock PCV system was not able to keep up with the crank case pressure created from forced air blowing by the rings. There are a few horror stories in this thread of seals pushing out due to crank case pressure. Thats why I have removed the entire PCV and have both rocker covers vented to a vented catch can. When I have the money I will buy a belt driven vacume pump to suck out the crank case presure.
Staging Lane
Joined: May 2008
Posts: 85
Likes: 0
As i understand you need -10 -> -12 hose size? Is the stock hose says way to thin? Ive got some issues with having that big hose from the driver side.
Will it work with a -10 on the passanger side and just keep the stock hose from the driver side and use two breather tanks?
Will it work with a -10 on the passanger side and just keep the stock hose from the driver side and use two breather tanks?
i use a PCV valve on the d/s with a ck valve, (so i dont blow boost in the engine) and on the pass side i got one of those filters that twist in where the oil filler cap goes-engine is dry as a bone
Fri i made 3 passes at the track, hit 7K on a couple shifts, no leakage
i orig made up a breather deal in the valley pan, had oil leakage there, so i fig it was just to low
i also have UMI v/c spacers, for the Comp rockers, maybe that gives a little more room to breath-i just capped off the nipple on the p/s v/c, it was used for the F/I setup, i run a carb
i run around 12-14 lbs boost
Fri i made 3 passes at the track, hit 7K on a couple shifts, no leakage
i orig made up a breather deal in the valley pan, had oil leakage there, so i fig it was just to low
i also have UMI v/c spacers, for the Comp rockers, maybe that gives a little more room to breath-i just capped off the nipple on the p/s v/c, it was used for the F/I setup, i run a carb
i run around 12-14 lbs boost
i just did mine, 2 -10 fitting welded to the valley cover, one center/rear and the other center/front. 2 -10 lines from them to my catch can. Again a little pricy and can only do it if you have a vic jr style intake. But its fool proof and no lines can blow off or anything of that sort.
^^^