Catch bottle on the engine draft tube??

[DBoyd]

It is advisable to use a catch bottle on the crankcase vent tube on the 12 valve?? I have had one on mine for years and pulled it off the other day to see if it made any difference in crud on the bottom of the truck or on the driveway. Any thoughts on this??
Thanks.

 

[mtarcher1]

I don't know that there is a real need other than keeping the underside and garage floor a bit cleaner. I have a bottle on mine and it definitely helps me track down the occasional oil seep source by ruling out blow by from the crankcase. The build up in my bottle is pretty minor but I do check it and usually clean it out annually. I think changes in the amount collected may help alert me to the wear status of the rings.

 

[Metalhead1970]

I am working on installing a breather catch bottle with a drain from jegs because I'm unhappy with the Cummins setup I think it's crap

 

[Metalhead1970]

As to the amount of oil collected in the catch you might be correct as far as a wear indicator but don't forget to factor in the possibility of your vacuum pump deteriorating when making a decision on it if the vacuum pump goes bad and ring seal drops you would deffinately see more blow by oil and in that case the rings would be innocent of all charges....just sayin

 

[ScottLewis]

Kept a jury rigged catch bottle on my '98 12V nearly all the 100K+miles I had it. Strictly to keep my new garage floor clean. Never did collect much more than a few drops but at least they were contained.

 

[GAmes]

As to the amount of oil collected in the catch you might be correct as far as a wear indicator but don't forget to factor in the possibility of your vacuum pump deteriorating when making a decision on it if the vacuum pump goes bad and ring seal drops you would deffinately see more blow by oil and in that case the rings would be innocent of all charges....just sayin

The vacuum pump causing excessive blowby is a myth that just won't die. A "deteriorating" vacuum pump would produce less vacuum than a fully functional one to start with. Then, what little air that can be introduced into the crankcase with a vacuum hose broken can be easily vented by the large vent tube. If all the vacuum components work, then it's pretty obvious there isn't a vacuum leak anyway.

 

[amsoilman]

I installed many of these "Catch bottles" on so many 12 V engines, I can't count how many! They do provide a much cleaner underside of the truck!

 

[GAmes]

A catch bottle can be had for next to nothing. I use a plastic 16 oz peanut butter jar. Drill a 1 inch hole in the top to slide over the draft tube and 5 or 6 1/4 inch holes to allow the air to escape. Slide the cap onto the tube and place a zip tie under it to keep it in place with the bottom of the jar about 3 inches from the bottom of the tube. Screw the bottle on and empty when needed.

 

[WaynesWorld]

How about a photo or two on the bottle install. I plan to put one on my Lil Pete.
WAYNES WORLD

 

[GAmes]

OK, didn't think it was that complicated.

 

[WaynesWorld]

Good use of bottle-----Thanks GAmes:-laf

 

[JeffPo]

Thanks for the pictures and description of your no nonsense catch can. I like this alot!