MOROSO CRANKCASE EVACUATION - I put it to the test!!

For fuel injected cars, always insert it after the Cat And after the downstream o2 sensor...Moroso crankcase evacuation kit testing and how it works..You can also put a guage where the breather goes to measure blowby ....this can also clean up any leaks on the intake or valvecovers .. Mighty Car Mods yellowbullet yellowbullet.com murder nova pimp juice
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[@mark0shark0]

To anyone doing this with a catalytic converter. Install the check valve after the cat.. other wise you're gonna mask the cat quickly with the hydrocarbons or overheat the cat with the fuel vapors..

[@2slofouru]

You have a great explanation, you obviously understand several important points a lot of people would overlook. Thanks for the vid

[@blueblood2555]

Actual... Good demo man.

[@georgebunn8690]

Thanks!!! This video is fantastic! It really helped me alot w/ installing this on '70 GTO. Plus the guy sounds like Rocky Balboa.

[@klowny1969]

Ayy yoo adrian

[@joeblough70]

Waste of effort. Not in the right place or enough vacuum to do anything but dump oil into exhaust!

[@shoominati23]

He doesnt have the weight machine installed in the cabin yet though

[@fatsolutions]

Thanks for uploading this video!

[@klowny1969]

+Alden Clarke Thanks for watching

[@sparkplug2646]

I fuckn love the detach tape deck man. Keep keeping it real brother! Hammer down!!!

[@klowny1969]

Thanks...don't forget to subscribe

[@13megagreek]

It's funny how things come back around. I did this very same thing around 1990, to my '80 Trans Am with a worked LS-7 BBC in it. It had so much blow by, because of the 12.5:1 compression, it would blow the dipstick out and spray oil all over. This thankfully cured it. Good tip, nice vid.

[@bartbarnett2811]

Compression ratio doesn't cause blow by. If that were the case Diesel's everywhere would be puking their guts up. Yes they do get excessive blow by later on in their lives but not when they're new. The lowest compression ratio you have on a diesel is 16:1. Sum upwards of 24:1. It's caused by really sloppy engines or broken piston rings. On a turbo diesel intake valve guides can cause it from the boost. If you pull the valve cover off and it's super gross in there could be the exhaust valve guides. Those are easy to tell by the crispy valve guide seals. But on a gas engine if it runs fine and it has excessive blow by it's coming around the Piston one way or another. I'm running 12:1 390 small block 0 blow by I still run a factory PCV system. I did unplug the driver side and run the PCv over there and I run the dipstick tube directly into the passenger side valve cover. At idle and cruising down the road she pulls vacuum no problem.

[@psychotrucker9880]

Let's go brandon

[@klowny1969]

Don't forget to subscribe

[@cfmechanic]

Great video as always. I'm getting ready to put a moroso 3 van vacuum pump. My stroker motor does well at or below 3000 rpm but over half throttle it can get smokey. I attribute this to 4inch stoke small block with short skirt pistons etc. Looking to run on daily driver. We will see

[@jimbarber2947]

It suppose to be welded in the header where they merge

[@jkcamperspecial]

good vid!just put this kit on my hi compression 545 bbf intake seals kept leaking.just wanted to mention these work fine on a mufflered set up mine sucks my finger tight to breathers when running !a lot of people wonder about the exhaust thing I run aero chambers with x pipe.just thought id add my 2cents to your info.thanks keep them comin!

[@lit549]

How does it suck at wot?

[@spelunkerd]

You answered my question about the cat right at the end. Good point, if a cat is present it would be better to mount it distal to that.

[@venomhemi3914]

wow, you car sounds great!!!

[@klowny1969]

thank you sir!

[@2slofouru]

I actually swiveled mine where the slot is on the opposite side because of a lot of google images showing it on the other side. Mine is threaded in with washers though and I'm using a AN adapter with my check valve further up to keep the heat away so I can easily spin it around and try for more vacuum. I'm using a AN10 aluminum check valve which seemed to open very easily when comparing it with two other random smog pump valves. If it doesn't hold up I will definitely get a moroso valve. I had no idea the moroso valve was easier to open, thanks!

[@klowny1969]

Thanks for your input..and thnx for watching

[@NoSmileification]

So what was the vacuum reading? I cant see anything on that gauge lol.

[@GERRYMALONEY47]

I run a 400 blown sb and this system is being installed as I watch your video I have seen videos it's a uwell the bum into the collector of the headers I've seen other ones that's a welded in after the collector into the system I have cutouts like the old Lakewood system where you popped up late and you run open headers I want to weld it in near that collector so when I do run open headers I get the same effect

[@paul1der]

To avoid vacuum sucking exhaust back in is easy. Connect the pcv system directly to exhaust and plug the intake inlet from the pcv outlet. PCV OUTLET TO CATCH CAN INLET, CATCH CAN OUTLET TO EXHAUST PCV INLET. PLUG INTAKE INLET.

[@bretbradbury5059]

Thanks for sharing the test results. I feel that it would be a million times more helpful if you left the hose connected to the crankcase and placed a pressure/vacuum gauge on the crankcase. Testing static pressure or vacuum without flow is not a valid test. You might not end up with any vacuum at all on the line once you connect it to the crankcase and that's not necessarily bad if you compared it to some level of actual crankcase pressure with it removed.

[@starbattles1]

Thanks for this review.I just did the same to my car. I have higher vac at high rpm then I do idle. I get as much as -10hg. You're exhaust needs to be tuned right. Greater velocity should equal greater hg. Not less.

[@klowny1969]

starbattles1 thanks for watching

[@mikemercier9648]

Hey I have an 87 Iroc/z28 I just dropped a 400 small block, I have a few questions about the electrical because I went carburetor so I'm trying to figure out what you do with ECU and wirinig

[@2slofouru]

I'd like to see one of these tested in a video, to see if they pull any useful vacuum, especially with having to overcome the check valve as well.

[@robertries7774]

The NAPA check valve is better than the ones that come in the kit.

[@clutchboi4038]

Cars used to pull vacuum from the exhaust for decades. Pcv systems were created for emissions reasons. I don't see why this wouldn't work and a simple vac guage would verify.

[@justinw523]

You sound like the guy from Eddy & the cruisers lol. But anyways GREAT video I have a 92 Z28 getting blow by and this just helped me

[@klowny1969]

lol thanks for watching

[@chrisbrown4870]

deffinetly not word Man LOL .

[@tonyvanntruth2969]

You are INNCORRECT in saying that the exhaust enters through the slit/notch on the side of the syphon tube. The slit/notch has been placed there for correct installation of the syphon tube. When you drill a hole into the header collector, the hole is round, and is the size, (slightly larger), of the outside diameter of the syphon tube. The syphon tube must be installed at a 45 degree angle into the collector. The syphon tube itself is cut to a 45 degree angle at its bottom. The exhaust flow must be parallel to the bottom of the syphon tube to create a syphon vacuum. The notch cut into the side of the syphon tube is there for the purpose of inserting the round syphon tube into the round hole that you drill into the collector, and then to catch the sheet metal on to the notch facing forward, towards the exhaust flow, in order to PIVOT the syphon tube forward at the top, (rearward at the bottom), so as to place the syphon tube at the correct 45 degree angle, and the correct depth, for optimum syphon vacuum. The syphon tube must also be placed just rearward of the merge point, where the individual header tubes enter into the collector. This is where the velocity of exhaust flow is highest, and will create the highest negative pressure, to create the highest syphon vacuum.

[@klowny1969]

thanks for watching

[@tonyvanntruth2969]

+klowny1969 Thank you.

[@alliseleven]

Umm, no. klowny is correct about the method of operation. You are incorrect about the theory. This is not a Venturi effect, it is simple fluid dynamics. Venturi operates on the Bernoulli equations. To get what you are envisioning, the 45 degree cut injector nozzle must be rotated 180 degrees to parallel flow, resulting in an exit port 90 degrees to flow. Then the exhaust upstream must be conically constricted, and the injector must be immediately after the constriction on a gradual conical return to normal diameter. The length of the cone before the constriction must be shorter than the length of the cone after constriction. If klowny does it like this, with a real Venturi, he will have to replace all his engine seals with inverse lipped seals, as the vacuum will be so powerful. I do fish tanks, this is why I know.

[@gasolinevaporsystems9022]

NO, alliseleven, YOU are incorrect and the post I wrote is absolutely correct. Read the instructions from MOROSO and educate yourself on how to install these syphon tubes for Crankcase Evacuation systems. www.moroso.com/sites/default/files/instructions/25900_inst.pdf Also, there is no reference in the above comment to Bernoulli or Venturi, both of which I am very familiar with.

[@alliseleven]

So you are Tony, I assume. Tell me then, how is it you get a perfect flush fit on the inside? By welding the inside also? Exhaust gasses will still flow through, and it was ignored for the very reason it does not detract from the operation, in fact may enhance it. Although a tiny amount, it still adds to the suction. My references to Venturi was in regard to the video, not your comment. But thank you for your response, I always enjoy light banter on engineering and physics (BTW, I looked at the pdf, it is a rough sketch, nothing involved).

[@irvingbar4569]

So what happens to all the oil that comes out first turbo build

[@stevesolo16]

Test it already!! Enough talk. Back in the 60"s almost all drag cars had the Evac. system on their cars. It is still used in racing to this day.

[@klowny1969]

Patience grasshopper

[@oby-1607]

Car sounds good. Who needs mufflers. Good explanation. Say hi to Paulie.

[@klowny1969]

Thanks..will do

[@klowny1969]

Thank u for watching ..and thanks for the muffler info! :)

[@A.QPerformance]

You need a free flowing exhaust. I recommend placing a seperator/oil catch can in between or you will have oil in your exhaust and will mess with cat and o2 sensors. Also the check valave must be of a metal valve not rubber as the high heat exhaust gases will melt thr rubber.(as you said we should used regular PCV system check valves which usually have a ruber cehck valves). Also how well this will work inturbo cars as they have low exhaust velocity post turbo.as most of gaes are hitting the turno blades and slow down.Will this still suffient vaccum ?

[@corneliomhernandez9405]

i read on of the descriptions of one of the kits for sale that you are not suppos to run mufflers for these kits would you know anything about that?

[@aldenrichie]

Mufflers catch the oil and enough buildup in the muffler packing would then pose a fire hazard.

[@TallLittleElf]

Lmao. I'm looking for something like this for my 85 Camaro. Funny to see you have a Camaro too.

[@klowny1969]

Lol kool

[@mpikas]

klowny1969 I'm a curious about your exhaust (I wouldn't be surprised if you're not running something completely different by now), I'm assuming those are headman or hooker "shorty" headers? You say you don't have mufflers or cat, but in the video there appears to be a cat after the y-pipe, is it hollowed/does it have a tube through it? What's the rest of the exhaust like? I'm actually pretty surprised that it pulled that much vacuum with that header setup and mounted that far downstream.

[@klowny1969]

Mark Pikas Hey.. i have dyno dons custom headers 1 3/4" primaries..fake cat (straight tube with cat welded on outside)..and borla tuneable 3" cat back exhaust which i have a plate in there to bypass the muffler...so exhaust goes straight out..thanks for watching

[@a.f-body1vids655]

I've read it may have a downside where oiling is concerned. Have you had any issues? Does it make your car run better?

[@klowny1969]

No issues..works great!

[@frankm2385]

Now that it's been 5 years since you posted the Evac video, has your opinion changed any? Keep up the great videos!

[@klowny1969]

Frank M I'm pleased with it..it might be a better idea to just have only one side of it's a street car...thanks for watching

[@frankm2385]

klowny1969 It's a street/strip car. 383 sbc with Procharger @ 15psi. Still think I should use just one?

[@klowny1969]

Frank M at 15 psi ..depending how the block is setup..u might have alot of blowby..2 would probably be best

[@sandygalbraith49]

I have a question/comment. In looking at the installation instructions from Moroso it clearly appears that the slit cut into the weld in probe is used to determine the depth and angle that the probe is to be inserted into the collector and NOT to be, itself, inserted inside the collector in the exhaust flow. I would like to hear your comments on this as you say to put that slit inside the collector. Heck it might make it better but I just want to know what you think about it. Thanks for the nice video.

[@klowny1969]

The slit should be inside the exhaust..it aids in pulling vacuum. .see if u can watch my video again..i explain why this is necessary..thnx for watching

[@sandygalbraith49]

I understand what you are saying. I called both Moroso and Dynatech and asked questions. Moroso said the slit was an installation guide to determine the depth of the tube into the header and the angle of insertion and Dynatech said NO cutting of the tube at a 45 degree angle was necessary as they had done testing both ways and found no significant difference in vacuum being pulled. I also understand that what you've done is working for you and thats good. Just saying a more simple installation would net the same result.

[@klowny1969]

Ok..if the slit is not inside the collector, then are u saying it can go outside? Cause that wont work well..sort of like a straw when it has a hole..this is what i was talking about

[@sandygalbraith49]

What I was saying is the slit is only to show you how far in to mount the tube. It is not supposed to be used to allow air or exhaust to pass through. It should be welded up along with the rest of the tube around the outside of the collector. Its only a guide. Hope this helps. Sorry for the delay in replying.

[@user-nc8qj2no3k]

You say you don't have a catalytic converter, then what was that 6" behind the welded in valve you were showing on the undercarriage shot @ 10:16?

[@klowny1969]

It's a straight pipe with a converter shell on it..don't forget to subscribe

[@user-nc8qj2no3k]

@@klowny1969 word!

[@fc3schick87]

where did you get that valve? i cant find any valve like that other then vibrant inline with male threads.

[@klowny1969]

Summit racing

[@58chiefton]

hey quick question bro i have that same but older evac set up on my old headers and before i make holes and weld the bungs in the new ones on the car now, i want to make sure there is not a better set up ? only because on my old headers i have been getting oil leaks at either the gromment or the moroso style evac breather which should be sealed? i have to check but it will get wet and starts to leak down for that lovely oil avac smell coupled with burning it lol anyway since your old vid here have you liked the moroso set up and did it start leaki g at gromments? i read alot of comments on your post and others just want your opinion of this set up which i like and i am running 2.5 full now i know could cauae less flow but nit worried about that becauee it should pull enough ? and sorry to be mr chatty on a work week but what is your thougts on running a pvc and into the intake and a free breather on the other valve cover? i saw a guy actually use a glass bottle inbetween the intake and pvc and set it air tight next to the distributor thanks in advance Dana

[@klowny1969]

Dana Tostado no leaks with this setup..with both banks of the engine having evac setups, u burn a little more oil. if u have a mild setup u can go with pcv and breather

[@goskatetoday]

hey i have a nissan 240x can i run from the stock pcv box and valve to the the motor check valve? or do i need a catch can?

[@klowny1969]

What motor checkvalve are u referring to?

[@chrisryder1073]

could cause problems with AFR sensor?

[@klowny1969]

I run one side with this and the other side has an o2 sensor..don't forget to subscribe

[@Floyd112007]

If you have one of these do you still need an oil catch can?

[@klowny1969]

no need for the catch can..thanks for watching and dont forget to subscribe

[@Floyd112007]

@@klowny1969 thanks, that's what I thought. Subcribed.

[@robertries7774]

I run a catch can in my setup and it keeps most of the oil out of the exhaust.

[@benkalinowski5834]

Do you have a muffler ? I have racing exhaust I have a cat to for the cops I want to do this bad

[@klowny1969]

Yes I have borla

[@michaelcapozzi6863]

thank you for the education! lately Ive been reading about breather filters, crankcase vents etc and it dawned on me that people were using a filter....because generally a filter is used for when air is coming into as opposed to out of, so finally after reading and watching videos I said screw it, took off my vent line while my car was running and there it was, air was coming out, makes perfect sense (so why put a filter on it?)....strange. Then I see that the air coming out could possibly have fuel or tiny particles of oil, which makes sense considering the hole is next to the cams....furthering the million dollar question of why in gods name would you recycle that air through the intake?!?!? then Im like okay someone out there put the line into their exhaust cause they came to the same conclusion, and boom there was your video, thank you very much, i dont feel like an idiot now for questioning breather filters and recycled air etc. makes total sense to me now.

[@klowny1969]

thanks for watching and commenting

[@ThePeopleVerse]

Dude, there are 2 reasons for the pcv system. One is in its name... to vent the crankcase as to not have pressure build up like this guy explained about blowby and all engines have blowby. The other is yo keep it out of the atmosphere....its an emissions thing. Pulling those gasses from the crankcase and "re-burning" them keeps the raw fumes from polluting the air we breathe. That is also why this is a race application only part and not intended for street use. So don't out this on and think you will pass inspection with your daily driver...if you have inspections where you live, that is.

[@ThePeopleVerse]

Oh, and the reason people out a filter on there (don't have evac) is to collect the oil mist so it doesn't make a mess on the valve cover. They just clean the filter every so often.

[@AbbasNemer]

Was that in PSI?

[@klowny1969]

inches

[@user-mm1se7gy7e]

Try this test at 8800 rpm !

[@klowny1969]

Challenge accepted!

[@claytoncartozian8072]

Isn't that a cat. I see @10:16?

[@klowny1969]

It's a fake cat..it's a straight tube inside the shell..don't forget to subscribe

[@ACommenterOnYouTube]

i won't rely on exhaust vacuum to pull out the crank case vapors ... I just ran two 5/8 hoses from the valve cover breather and the PCV opening and just followed the exhaust all the way back to the rear of the car and let them vent to atmosphere .. This way the crankcase can breathe freely during idle, cruise and full boost ..

[@klowny1969]

You can have just one tube going from crankcase to the exhaust and the other valve cover just have a breather on it..works beautifully

[@supernice_auto]

so you don't have anything actually scavenging the vapors out of the head(s)....

[@ACommenterOnYouTube]

@@supernice_auto out of the heads ???

[@supernice_auto]

@@ACommenterOnKZbin yes thats not the same in terms of efficiency with added vacuum

[@ACommenterOnYouTube]

@@supernice_auto Once again i will ask you "out of the heads" ?? Let me know if i need to clarify that statement more or if you can define what vapors are IN the heads

[@bobcobb6952]

What is that accent!!? :)

[@klowny1969]

Queens new york :)

[@GODZILLATORINORACING]

Great test , Im running this on my BBF so I know it works . I subscribed to your channel , appreciate if you could return the favor . Awesome information!

[@klowny1969]

Thank you!! will do the same

[@n5ifi]

Anyone that has a race car that can move out of it's own tracks should never install the evac system in the back of the valve cover. Install the breathers in the front of the valve cover for drag race applications. Both Valve Covers....... ps...If you have a Chevrolet powered vehicle this will not pertain to you.

[@bykr2009]

Crankcase vacuum isn't affected by g forces, so i don't know what your talking about. Any breather used for the evac system should have a baffle in the valve cover anyway.

[@n5ifi]

@@bykr2009 No, but oil is. Like I said, if you have a car that will 60ft at all, you would understand what I meant.(with your separators located at the firewall end of the engine) Some engines are unable run tall enough valve covers to clear a baffle and the stud girdle together. (cant run a baffle at all) It's always a good idea to run the breathers/oil separators in the front portion of the valve cover.

[@bykr2009]

@@n5ifi Not really arguing that it's not best to go off the front, but stud girdle? We're a little outdated there now. Always had baffles in though.

[@hectorortega9131]

Unsubscribing, Now!...

[@klowny1969]

Hector Ortega AWESOME!!!

[@bootyman234]

The use of the word "actual" was waaay overdone here. What else is there but the actual, whatever...a virtual one? lol Instead of actual tube, for instance, you could simply say "the tube itself" and sound less pretentious. People overuse "actual" when they are trying to make what they are talking about sound more important than it is.