Oil catch can?

[MAGS1]

I agree, not necessary but its a mod that only has upside with no downside (unless you forget to empty it when full).

Agreed. Every oil change seems to be about the right time on mine.

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[SheepDog]

freedom units

 

[PoCoBob]

Reading through this and I still don't know what the "upside" of a catch can on any engine that has port injection is. The amount of oil it catches equals a few drops per tank of fuel so it's not going to effect octane rating at all. I guess if you're tracking or drag racing the car and every ounce of performance matters then go for it. Same with a boosted motor where blow by becomes a bigger issue. But a N/A engine on the street will never benefit in any measurable way with a catch can. A direct injected engine, absolutely put one on, but not one with port injection.

 

[Bulldog9]

people have used water (or trans fluid) to do the "Seafoam treatment" for years

a very small amount of water won't hurt your engine, and can actually cool/clean the intake. People also inject things like methanol, rubbing alcohol, etc.

you just don't want enough water in there to hydrolock the engine. Not going to happen with a fine mist that comes out of a water/meth setup

Back in the day (late 70s-early 80s), guys would rig their windshield washer hose to a spray nozzle and point it in their carburetors and rig a momentary switch to 'spray' water or alcohol or moonshine into the carburetor for races. The idea got started by those who would spray trans fluid to 'clean' the motor, and well teenage motorhead beer influenced boy minds took over..... I did it to clean or fog a motor, but thought the guys spraying moonshine or other alcohol to get a boost were nuts.............

 

[Bulldog9]

Reading through this and I still don't know what the "upside" of a catch can on any engine that has port injection is. The amount of oil it catches equals a few drops per tank of fuel so it's not going to effect octane rating at all. I guess if you're tracking or drag racing the car and every ounce of performance matters then go for it. Same with a boosted motor where blow by becomes a bigger issue. But a N/A engine on the street will never benefit in any measurable way with a catch can. A direct injected engine, absolutely put one on, but not one with port injection.

Catch cans aren't bad, but on a NA car driven on the street (even aggressively) are not necessary. Beneficial in lowering the oil content sucked back into the intake can have some benefits over time, help to prevent the effective lowering of octane in the combustion chamber and potential buildup.

I put a Ford Performance Catch Can on my car when new. It captures Maybe 1 tablespoon of oil per oil change (5K intervals) NOT monumental, not critical, but there is benifit to cleaner oil being pulled through the PCV lines.

 

[junits15]

Reading through this and I still don't know what the "upside" of a catch can on any engine that has port injection is. The amount of oil it catches equals a few drops per tank of fuel so it's not going to effect octane rating at all. I guess if you're tracking or drag racing the car and every ounce of performance matters then go for it. Same with a boosted motor where blow by becomes a bigger issue. But a N/A engine on the street will never benefit in any measurable way with a catch can. A direct injected engine, absolutely put one on, but not one with port injection.

There isn’t much upside unless you’re pushing substantial boost and have a lot of blow by.

You’re right the port injectors clean the valves on the gen 3. And there’s basically no impact to effective octane.

it’s not a bad thing but I don’t think it’s needed for a naturally aspirated or street car

 

[JVO21303]

There isn’t much upside unless you’re pushing substantial boost and have a lot of blow by.

You’re right the port injectors clean the valves on the gen 3. And there’s basically no impact to effective octane.

it’s not a bad thing but I don’t think it’s needed for a naturally aspirated or street car

Totally agree. Boosted applications need catch cans my intake would get dirty quick before my rebuild because of blow by caused by the factory gap in the rings.

 

[robvas]

Back in the day (late 70s-early 80s), guys would rig their windshield washer hose to a spray nozzle and point it in their carburetors and rig a momentary switch to 'spray' water or alcohol or moonshine into the carburetor for races. The idea got started by those who would spray trans fluid to 'clean' the motor, and well teenage motorhead beer influenced boy minds took over..... I did it to clean or fog a motor, but thought the guys spraying moonshine or other alcohol to get a boost were nuts.............

They learned it from airplane engines in WW2, brought it home to use on cars

 

[geezer stang]

I got the Ford performance, but seems like a pain to empty it.... How often should I check the can?

i have a 21 gt with ford performance air/oil separator,i empty it quarterly and usually get about 25-30 cc.

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