Catch Can Routing....

[Gmachine1911]

I’m having a hard time with the idea that they expect you to just route any oil overflow to the ground somewhere, or track surface if that’s where it happens to be, and hope for the best. I’m no engineer but I’ve never heard of any such thing on a PCV catch can. I read thru their instructions for “LS Mild” and “LS Wild” and didn’t see any reference to letting it drain on the ground. I think you need to call MM and have them walk you thru your specific application via phone.

[icemanrd19]

Screw it in to the side of the frame. Leave about 6” of free play. When you need to drain it get a cup, open the valve , drain it, and then close valve. Takes all of 1 min to do.

[dhutton]

Pretty sure he is referring to a hose out the top of his Race catch can and not the bottom drain hose. Its not a great choice for a catch can imho. Should have gone with the PCV version with a filter on top....

This thread and these catch cans are confusing as hell thanks to their lousy website.... ��

Don

[69camarokid]

Pretty sure he is referring to a hose out the top of his Race catch can and not the bottom drain hose. Its not a great choice for a catch can imho. Should have gone with the PCV version with a filter on top....

This thread and these catch cans are confusing as hell thanks to their lousy website.... ��

Don

You are correct. I am talking about the top of the catch can. The website and the instructions give absolutely no indication as to where to top can tubing is to be routed..... yarg!

[CarlC]

Want an OE quality separator that has an automatic drain valve? Provent 200 + drain valve if the return line is above the oil level. These are far more sophisticated than a can full of steel/brass wool.

https://oe-products.mann-hummel.com/...ProVent_en.pdf

[TheBandit]

Those look awesome Carl. Thanks for the info. Do you have one installed on your car?

[John McIntire]

Where do you purchase those from Carl?

Maybe you could also tell us or sketch out a schematic with the proper plumbing for one on a NA LS?

Thanks!

[CarlC]

Those look awesome Carl. Thanks for the info. Do you have one installed on your car?

Yep, and you're welcome to take a look.

[CarlC]

The Provent 200 is very easy to install. The top port is the inlet, the lower side the outlet, and the bottom is the drain.

The drain line runs to the oil sump. If the drain port on the pan is below the oil level then no vacuum check valve is needed. If the drain port is above the oil level as it is on the ATS/Speedtech pan in the Camaro, then the Mann-Hummel vacuum valve is needed. The drain port on the Provent 200 is subject to PCV vacuum, so once the engine starts the valve closes, creating a closed system. Once vacuum is released, so is the valve, and any oil accumulated drains to the pan.

I purchased it a decade ago from a Porsche online store. This place has pretty good prices for filters, maybe they have the whole unit. https://www.dieselfiltersonline.com/ I suggest getting an extra filter since they are not something the local parts store is likely to have.

The other nice thing is that Mann Hummel is global company dealing with major manufacturers. They have real data and instructions, like these: https://oe-products.mann-hummel.com/...ProVent_en.pdf

On a similar topic, I've had good luck with this part as well. http://mewagner.com/

[John McIntire]

How about a kindergarten level explanation of how to route hoses and return lines from valve covers to valley covers to intake plumbing.
About the only thing that's clear is the oil drain back

[dhutton]

Fresh air hose from intake tube (between MAF and throttle body) to valve cover. Catch can input to valley cover. Catch can out to throttle body. Pretty simple...

Don

[CarlC]

Some LS engines, like mine, do not have a valley cover engine outlet. The LS6 in the Camaro has an engine exit on the opposite side valve cover.

In any case, as Don notes:

1) Fresh air from after the filter and after the MAF (if the engine has one) but before the throttle blade routed to a valve cover inlet, typically on the passenger side.
2) Dirty air engine outlet to the PV200 inlet. Dirty air can be from the valley cover, drivers side valve cover, etc.
3) PV200 outlet to engine vacuum (after the throttle blade.)