When my engine was first built, forgies etc, even on 7psi with a 35/40 and standard size breathers, it filled up the catchcan after a 5 minute flogging. Took the rocker cover off installed 3/4 brassfittings and hose, not a problem ever again, running heaps more boost, not a drop...

No one has asked - I know it may sound silly - are you using the correct grade oil for starters ? ---------- Post added 15-04-11 at 09:28 ---------- and moved to the right section too

He is running a mineral oil to run it in, as for weight I don't think it has been mentioned.

20w 50 is the oil in the engine atm. I checked the PCV and that seems to be operating normally, when l blow in the hose to the PCV is blows nice and smoothly and when l suck the valve it closes. Today l decided to connect both rocker cover hoses to the catch can and that has seemed to solve the oil blowby problem. I blocked off the plenum PCV valve with a bung in front of the hose. Gave it a little stick and noticed the can wasn't filling up which was a good sign. Now its off to the dyno to check afr's and timing and see how much boost l can run safely. Checked with Dave today and he showed me there are 2 tomei oil restrictors (1.5mm in size) put in place in the pic below. At this stage its all looking goog and the vac is on - 21 :Also: . So basically connecting the front rocker cover hose to the catch can solved my oil blow by problem, running like a beast now Some original photos have not been recovered yet.

Good result dude. Now if you want to make it look pretty send me a PM.

Well didnt know that you were still running pcv ???? oh well ,big no no with boost,first thing to get rid of ,step the breather fittings up in size too ,to compensate for more boost and you will be right ,still may get some blow by though. goodluck dude.

yep will send Duke57TT a pm now.

Quote: Originally Posted by FRKVLT [View Post] 20w 50 is the oil in the engine atm. I checked the PCV and that seems to be operating normally, when l blow in the hose to the PCV is blows nice and smoothly and when l suck the valve it closes. Today l decided to connect both rocker cover hoses to the catch can and that has seemed to solve the oil blowby problem. I blocked off the plenum PCV valve with a bung in front of the hose. Gave it a little stick and noticed the can wasn't filling up which was a good sign. Now its off to the dyno to check afr's and timing and see how much boost l can run safely. Checked with Dave today and he showed me there are 2 tomei oil restrictors (1.5mm in size) put in place in the pic below. At this stage its all looking goog and the vac is on - 21 :Also: . So basically connecting the front rocker cover hose to the catch can solved my oil blow by problem, running like a beast now ---------- Post added 15-04-11 at 20:34 ---------- Quote: Originally Posted by duke57tt [View Post] good result dude. Now if you want to make it look pretty send me a pm. Some original photos have not been recovered yet.

Ok, just cause I'm a nice guy.... Anyone in the next few weeks who mentions this thread and sends me a PM I will cut a special members price. The best quality you can buy at the best price in Aus. I guarantee it.

lol definitely woulda helped to know that you were still running the pcv. Either way glad you solved the problem buddy

why is running the PVC a problem, dont they do this from factory and there boosted then?

I have exactly the same problem with my VL i only just rebuilt the engine less then 500kms so im assuming its not the engine itself. Just a question if your turbo has had it how can this pressurise your sump??? And ive read a few forums where they have said that to much oil can cause oil to come out of the top rear breather hose on the rocket cover so exactly in litres what would be the right amount of oil to have in the car???

i would also like some clarification on this as i also will be building a motor soon why is it a bad thing to run a pcv?? as i want to keep my car as close to standard as possible.

Took the filler cap off the rocker cover and l noticed the engine is breathing very hard, it's like a smoke show does that mean my piston rings are gone?

2x -10 rocket cover to catch can 1x -10 catch can to top level sump 2x -10 rocket cover to intake side of sump or 2 x -10 rocket cover to catch can 1 x -10 catch can to intake side of sump - acts like breather 2 x - 10 rocket cover to sump smooth

Does that mean 2x10 rocker cover to catch can, 1 to catch can to top level sump? Where is top level sump? Then what do you mean by 2x rocker cover to intake of sump? Is that another 2 hoses total of 5 hoses?

i have 2x -10 from rocker cover to a catchcan and 1x -10 from the rockercover to the sump and a 25mm breather on the catchcan. not a drop of oil in my catchcan ever.

Hi mate, can I get a pic as to where to put the hose from catch can to block? I would appreciate your help. When you take your cap off is your engine breathing hard? ---------- Post added 21-09-11 at 21:42 ---------- Would it make any difference where l connect the hose in front or rear of rocker cover to sump? Could l please see pics of where it is connected on the sump. Thanks heaps!

Just a quick question, now thinking of running another hose from rocker cover to drain hose of the turbo? Can l just t piece the oil drain hose from rocker cover instead of drilling a hole into the sump?

Anyone?