Hey guys. Decided to build my own catch cans. They are recirculating and baffled. Hopefully, my baffling works. I didn't want to use steel wool or other similar materials in case they break down and get into the engine. There are still a couple of things to wrap up but the majority of it is done. I'm debating on if I should, anodize, paint, or leave them raw aluminum. Don't mind the my dirty engine bay...next on my list to do. Going to SD soon so stock intake and maf will be gone.

Let me know what you guy think.

 

Looks good

 

Those look killer!

 

Gorgeous! I'd sport one, for sure.

 

Looks awesome!!

 

nice! im gonna have to get me one soon!

 

Those look great would love to run one but must be expensive!

 

The machine work and ingenuity looks good, however they look heavy as ****.

On your next iteration pay attention to areas which only require thickness due to thread length/strength etc, and give the rest of the can a major diet, wall thickness for instance.

I would also consider much finer baffling in multiple layers, reduce the hole sizes and increase the amount.

One thing I can't really tell, is there a vent or in vs out? I can't figure out the over all design by the pictures I don't know where your hoses go.

my $0.02
Keep up the good work.

 

I know! I was waiting for someone to say something about the weight...
I designed up another version with the center section machined out and only thick around the screws and o ring groove.
There's no vent. These are recirculating so both have a vacuum source.

Thanks for the input!

 

The catch cans look great. My guess for the thickness is that u wanted some surface area for the countersunk screws.. even seems like the inset is getting pretty close to the perimeter. Maybe decrease your bolt size in the next revision - keep up the good work.

 

The screw size is already small (6-32UNC). There's an o-ring groove on the inside of the bolt pattern to seal up the lids. This made it much thicker than it needs to be. I wanted to go with something off the shelf so I went with an o-ring. If I made my own gasket, then the can could have been a lot thinner...

 

Since we have addressed the weight issue let's move on to the oil separation side of the cans. I think you need to check out Saikou Michi's design and try to incorporate some of that thinking into your can. I have heard that if you pull apart stainless steel pot scrubbers they are an excellent, breathable, high surface area media for use in a catch can. You're on the right track so please don't think I'm bashing you; I'm just throwing in my two pennies.

Saikou Michi baffle design

 

I came to this thread with low expectations to be honest. But this is great. I am very impressed

 

Yes, I've seen their design. My baffle design is definitely a shot in the dark. I did a rough CFD analysis and it showed to a lot of swirling which I hope would cause the oil to separate. Only time will tell.

Thanks for the input

 

Off Topic - Are you an M.E.?