Venting crankcase on M113 kompressor engine
11-10-2010, 07:53 AM
#1
Super Member
Thread Starter
Venting crankcase on M113 kompressor engine
Guys any help/advice would be appreciated,
I want to fit my closed breather catch tank that I've had sitting in the garage for months, but I don't really want to bother checking it every month to see if it needs emptying, so I will run a pipe to the drain plug and tie it under one of the front wheel arches.
Also wouldn't venting to atmosphere be completely unrestricted and therefore iliminate some crankcase preasure, which is good for oil blowbly in the bores etc. I dont care about performance just realiabilty.
Some of the previous posts mentioned that venting to atmosphere is not a good idea due to positive vent preasure needed going back into the throttle
or the negative preasure needed to suck back out through the rocker breathers?
Is anyone running an open vent system?
I want to fit my closed breather catch tank that I've had sitting in the garage for months, but I don't really want to bother checking it every month to see if it needs emptying, so I will run a pipe to the drain plug and tie it under one of the front wheel arches.
Also wouldn't venting to atmosphere be completely unrestricted and therefore iliminate some crankcase preasure, which is good for oil blowbly in the bores etc. I dont care about performance just realiabilty.
Some of the previous posts mentioned that venting to atmosphere is not a good idea due to positive vent preasure needed going back into the throttle
or the negative preasure needed to suck back out through the rocker breathers?Is anyone running an open vent system?
11-10-2010, 08:20 AM
#2
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2003 W211 E55, 2003 W220 S600
i had a catch can and trust me you will have to empty it out maybe once a year, about 20 to 30cc will come out. Right now i am venting into the atmosphere, until i get another catch can.
11-10-2010, 10:50 AM
#5
Super Member
Thread Starter
why dont you continue open venting? As far as I am concerned its just laws which dont allow road vehicles to vent to atmosphere. I did this to all my turbo aspirated cars in the past, which seemed to help combustion and possibly blowing oil seals like the rocker cover gaskets.
cheers
11-10-2010, 02:16 PM
#7
Super Member
Keep in mind you will need to catch cans unless you put it in between the TB and the T to the VC. Also on the pass side the hole is tiny even though the hose is the same size. If your catch can is on this side your not going to collect very much.
I run two home made catch can made out of mini water traps for an air compressor from that it goes into the exhaust which creates a negative pull through out the RPM range. This help with ring seal and oil control. It might not seem like alot of oil but when you pull the SC of and look at all the oil in the IC you will rethink the value of a Catch can.
I run two home made catch can made out of mini water traps for an air compressor from that it goes into the exhaust which creates a negative pull through out the RPM range. This help with ring seal and oil control. It might not seem like alot of oil but when you pull the SC of and look at all the oil in the IC you will rethink the value of a Catch can.
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11-10-2010, 03:33 PM
#8
Super Member
Thread Starter
Keep in mind you will need to catch cans unless you put it in between the TB and the T to the VC. Also on the pass side the hole is tiny even though the hose is the same size. If your catch can is on this side your not going to collect very much.
I run two home made catch can made out of mini water traps for an air compressor from that it goes into the exhaust which creates a negative pull through out the RPM range. This help with ring seal and oil control. It might not seem like alot of oil but when you pull the SC of and look at all the oil in the IC you will rethink the value of a Catch can.
I run two home made catch can made out of mini water traps for an air compressor from that it goes into the exhaust which creates a negative pull through out the RPM range. This help with ring seal and oil control. It might not seem like alot of oil but when you pull the SC of and look at all the oil in the IC you will rethink the value of a Catch can.
11-11-2010, 11:17 PM
#9
Super Member
The bad thing is that the engine can build up more pressure than can be vented and it *may* cause oil leaks. The benefits to creating a negative pressure is better ring seal which can make power and keep oil out of the intake charge(oil lower octane of fuel)
11-12-2010, 04:51 AM
#10
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2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
Keep in mind you will need to catch cans unless you put it in between the TB and the T to the VC. Also on the pass side the hole is tiny even though the hose is the same size. If your catch can is on this side your not going to collect very much.
I run two home made catch can made out of mini water traps for an air compressor from that it goes into the exhaust which creates a negative pull through out the RPM range. This help with ring seal and oil control. It might not seem like alot of oil but when you pull the SC of and look at all the oil in the IC you will rethink the value of a Catch can.
I run two home made catch can made out of mini water traps for an air compressor from that it goes into the exhaust which creates a negative pull through out the RPM range. This help with ring seal and oil control. It might not seem like alot of oil but when you pull the SC of and look at all the oil in the IC you will rethink the value of a Catch can.
11-17-2010, 04:07 PM
#12
MBWorld Fanatic!
Keep in mind you will need to catch cans unless you put it in between the TB and the T to the VC. Also on the pass side the hole is tiny even though the hose is the same size. If your catch can is on this side your not going to collect very much.
I run two home made catch can made out of mini water traps for an air compressor from that it goes into the exhaust which creates a negative pull through out the RPM range. This help with ring seal and oil control. It might not seem like alot of oil but when you pull the SC of and look at all the oil in the IC you will rethink the value of a Catch can.
I run two home made catch can made out of mini water traps for an air compressor from that it goes into the exhaust which creates a negative pull through out the RPM range. This help with ring seal and oil control. It might not seem like alot of oil but when you pull the SC of and look at all the oil in the IC you will rethink the value of a Catch can.
11-19-2010, 07:46 AM
#13
Super Member
Thread Starter
ok thanks, its safer to keep the system closed so as not to build up more positive preassure which cant be removed by the negative vacuum from the throttle.........
cheers
