Gen 1 oil catch can

[maverickagm]

I installed an oil catch can. There were a pair of extra M4 studs near the PCM. I think they are there to mount an A/C accumulator, but my 93 doesn't have it.

I went with a Morosso 85481. For some reason this one was half off on Amazon. But it's the same can, with 3/8 fittings and plenty of 3/8 hose. I only had to buy an extra 3/8 elbow and some flat stock metal. I welded two flat stocks together then cut the Morosso bracket and welded that on too (grinding and paint make me the welder I ain't!).

I avoided some of the Mushimotos or similar clones that used sintered bronze. It's more air restriction than I'm comfortable with. The cheaper Evil Energy style are just a simple piece of steel wool material. It's better than nothing, but there's no effective baffling in them. If you open one, it looks baffled, but that's actually the inlet side and it just holds the steel wool in place.

I have Collector Plates, so if I have to, I can just undo two nuts on the mounting studs, then quickly swap the connections at the PCV valve and the whole thing comes out.

I'm curious what people's experiences are with this. I've had a similarily designed J&L can on my S197 for nearly a decade. It catches some oil and has never caused me a problem. Nothing to see there. I hope to have the same experience....

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[redtanrt10]

Very clean!!

 

[GTS Dean]

My thoughts as well! I would not expect to catch much with your setup though - the Gen1's have a very efficient baffle system in the valve covers to strip oil vapor out before leaving the engine. That's what I used as a basis for my Gen2, which was a terrible puker at the track before mods. Please give us a report in a few months!

 

[serafins]

I'm doing the same basic thing dean is on my Gen 2. With a couple minor differences.

I am running the Gen 3 intake, so I'm using an adapter in the spot the Gen 3 map sensor would normally mount to provide intake vacuum.

I ditched the crossover between the valve covers. The driver valve cover is vacuum side that runs from valve cover to catch can, to PCV, to intake. The passenger valve cover runs directly to the airbox. Will force clean air to go down, evacuate the crankcase, and come back up and out the other valve cover.

The factory design on the Gen 2 with the pcv in the intake valley is really interesting especially when these engines already have issues with oil staying wound around the crank. The flow of air is straight up out of the crank valley, which can't be conducive to putting oil back in the pan instead of keeping it suspended in the air around the crank. Or at some engine speeds it could conceivably just pull in fresh air only to send that same air right back out the pcv, with no effect on crankcase pressures. Can only figure it was done this way for emissions.

 

[serafins]

I have an evil energy catch can also. They actually make pretty good aluminum parts including AN fittings, for the price.

 

[Goggles Pizano]

There are no pictures of the Morosso interior I could quickly find on the web.

 

[maverickagm]

I had found this video of someone taking one apart. The most notable section is around the 3 minute mark:

TIME SENSITIVE moroso oil catch can Unboxing and internals

This video unboxes and dissects to show the internals of the air oil separator / oil catch can. Also Jegs has this on sale right now as of 8/24/18.

www.youtube.com

 

[GTS Dean]

I'm doing the same basic thing dean is on my Gen 2. With a couple minor differences.

The factory design on the Gen 2 with the pcv in the intake valley is really interesting especially when these engines already have issues with oil staying wound around the crank. The flow of air is straight up out of the crank valley, which can't be conducive to putting oil back in the pan instead of keeping it suspended in the air around the crank. Or at some engine speeds it could conceivably just pull in fresh air only to send that same air right back out the pcv, with no effect on crankcase pressures. Can only figure it was done this way for emissions.

So Sean - you're basically mirroring my setup - correct?

Behold: the dreaded Gen 2 PCV outlet box. It takes oil droplets flung off the top of the timing chain, then s*ck them straight out of the crankcase and into the intake manifold, and down the cylinder runners. Great design - NOT.

 

[serafins]

So Sean - you're basically mirroring my setup - correct?

Behold: the dreaded Gen 2 PCV outlet box. It takes oil droplets flung off the top of the timing chain, then s*ck them straight out of the crankcase and into the intake manifold, and down the cylinder runners. Great design - NOT.

Yes pretty much. i Am still using the ports on the front of the valve covers though.