Why didnt the mod do anything jetpilot? Seems like it makes sense.

 

I'm still wondering WTF it's supposed to do ... anyone care to elaborate?

 

The system works but the ability to vent is limited to a certain flow rate. Exceed that and the problem will still exist.

 

I think it did work. But since his #2 and #3 pistons shown more then %10 leakdown I think that was why it wasnt working.

 

Where did you get the nice anodized 1/4 pipe plug?

I've tried a few places and all they have are the clunky brass plugs that weigh a ton. I was going to PM you, but other people might want to know, too.

 

I had other things going on in my motor that did not allow me to reliably evaluate this mod.

I bought the 1/4" plug from Summit. 1/4" NPT Plug

 

Thanks, Jet.

I think this is a great mod for NA engines, too. Drilling out the PCV valve, adding a breather or catch can, and blocking the intake manifold is a great way to relieve crankcase pressure and eliminate oil from getting sucked into the plenum.

 

in theory it maks perfectly god sense that it should work, but does anybody have any firsthand experience (other than jet) that proves that this works? wanna get this done before i put my motor in

 

I'm waiting on a back order of the catch cans from that Corvette builder in FL. I already have a MAP sensor. Once I get the parts, I'll be logging crankcase pressure before/after the PCV drill out.

 

Sweet. Looking forward to the results.

 

Would a vacuum pump be more useful in relieving the cc pressure?

 

As long as you can get it to flow exactly as needed depending on load. It's easy to apply to much vacuum and suck out your oil, apparently, in the articles that I've read. It also depends whether you are looking to actually maintain a vacuum in the cc (reportedly this leads to increased engine output), or just prevent elevated pressure. Put a breather on open ports and you won't go higher than atmosphere!

 

First thing that comes to mind is any sort of belt driven vacuum pump..

 

That will correlate to rpm, not boost. At full boost, excess blow by gases may require the pump to kick in more than it might at mid rpms. So for NA that might be fine... If I were to use a pump, I'd look for an electric one and have a PWM valve in the piping - and drive that solenoid by the EMS so that it is proportional to boost and rpm. An alternative would be to make it proportional to oil pressure.

 

^Sorry, I'm Vortech. RPM is boost.

I don't think like you fancy folk with your TurBoZ

 

And I never thought about a SC! Yes, that would work fine for that too.

 

Why can't we just put a breather on the top of each valve cover? Is it because they're plastic? I had 2 breathers on each side of my viper and 1 on each side of my transam with small K&N filters. I bought them from a parts store and had my shop install them. Of course the valve covers were aluminum but I see no difference. Is there something that requires us to vent from the plenum?

 

Venting the crank case may actually free up HP. There are belt driven vacu pumps out there nascar uses them and they are very effective we just went with a breather tank there was no room in our setup!

https://my350z.com/forum/attachments...rged-tank2.jpg

 

Im thinking of throwing some breathers on mine, i believe injected performance and other shops just have breathers on their cars. Can anyone who has thr breathers tell me what sizes i need?

 

I am in the middle of doing something with my PCV system. I was thinking about drilling the valve, running it to a catch can, and then from the catch can to the turbo intake. I don't see why this wouldn't work. The crankcase will always be in vacuum. It is also very important to get the proper hose. I see many people here using hose that turnes to jello when heated.