Is it a bad idea to run the crankcase evacuation system that Mr.Gasket sells, on the street?

Seems to be a good idea, but are there any downsides? Thanks

Jegs part #: 720-6002

 

bump. anyone have an opinion.....

 

What's wrong with PCV?

 

I had something similar, and pre 90 cars can get away with that here.
But i plumped for a new aluminium pcv valve instead, because i dont like fumes in the car, and its a shame if everyone else has to breathe them.

 

Not to sure what you are talking about fumes in the car?? I am talking about Postive Crankcase Ventilation. When and how would any of the oil vapor get on the inside of your car?

...

 

Ah my mistake, the part i got wasnt that, it was a breather to allow the valve cover breather to vent directly into the air, rather than using the pcv valve.
I will shut up now.

 

Apeiron....Nothing is wrong with the normal way to go, but my valve covers have no holes, so I have to drill them. Before I do, I want to know, not the most convenient method, but the BEST way to vent the crankcase. I hear that is you use normal PCV you are sucking in the oilvapor and then sending it back throught the intake and combustion. If you run the exhaust taps and pipe to your valve covers, you don't have to run the oil vapors into your intake, your car just gets rid of them. And I hear that it makes much more of a vacume effect to better seal your piston rings.

Seems like something to consider if it truly is better. I allready asked another local guy on these boards that I saw running them and he said that it works great and he has a similar motor to mine. (500 HP N/A out of a 383)

 

Buy the weld in kit that welds into the collectors of the headers. The exhaust passing creates the vacuum that scavenges the crankcase. Make sure you have the kit that has one way check valves screwed onto the pieces you weld in. Don't need any exhaust backfires pushing the valve cover gaskets out now do we! The only thing I don't like about these kits is the wieght of the hose going from the breather to the valve below is that the wieght of the hose can sometimes pull the breather out of the V/C or cut the rubber grommet on the V/C. These are really made for high rpm (+7500) motors and a stock pcv system would work just fine and give the engine bay a little cleaner look IMO.

 

Run a PCV one one valve cover and a breather on the other.

 

Whats really the difference, other than the loss of maybe .001 HP

PCV- vents into intake, gets burnt and blown out exhaust

CrankEvac- Vents into collector where its burnt and blow out exhaust

 

A good PCV helps keep the buildup of acids and sludge down inside the motor. Also helps with oil drainback and ring sealing. There's a reason the OE's go to the lengths they do to make it work right. Then you have all the uneducated ones, "Just put some breathers on it, Cletis."

 

Now that i think about it, if theirs no baffles in your valvecovers then it its gets a splash of oil your going to have a hella big cloud of blue smoke out the exhaust

 

they sell breathers that come with baffles. I guess I will just stick with the conventional route and run a PCV to the carb. And a breather. I will also make sure to install a baffle. Thanks guys.




ps- just put my 2210s in. motor is starting to look bad ***

 

Been thre done that, if you run the evacs you will have excessive blow by and mine even shot the dipstick tube out and clew oil everywhere-reason: too much backpressure created when running this set-up with mufflers on. They were designed to be run on open headers with NO backpressure from mufflers being installed.

On a typical application they will show very minimal gains in the hp department-and that's a motor built knowing a vacuum aid such as this will be used, there just is not enough suction created with this set-up. Only a real vacuum pump designed to do just what yout trying and a regulated valve on the valve cover will net you the gains your looking for from just sealing the rings better...but again, that's assuming your motor's rings are either shot and leaking right now or you had the short block built loose knowing you'd be using a external vacuum source to compensate for the loosely built engine.

 

thanks for the insight IHI. I will follow your advice and stick with a normal PCV.

Any suggestions on a "***" one. (in terms of look, operation, longevity, ect...)