Moroso Breather/Catch Can to Exhaust Like this?
Tell me if this is correct please.
I am going to run a line from the valve cover to the catch can. (1 on picture).
Then I am going to run a line from the bottom of the catch can to the header (2 on picture) via a one way check valve.
I am going to run a line from the valve cover to the catch can. (1 on picture).
Then I am going to run a line from the bottom of the catch can to the header (2 on picture) via a one way check valve.
If this is how its done. Why not run it straight from the valve cover to the header? Why go to the catch can first?
https://honda-tech.com/zero...age=1
#2 is a drain, FYI.
#2 is a drain, FYI.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe »</TD></TR><TR><TD CLASS="quote">https://honda-tech.com/zero...age=1
#2 is a drain, FYI.</TD></TR></TABLE>
Yup, #2 is a drain. You either manually drain it into a pan, or you route it back into the engine through one of the allen ports on the back of the block. Probably dont have to route it back into the engine if you are NA though cause it might be overkill. For the top port you can leave that filter on there and it will vent naturally. Or you can run a vacuum assist by taking off the filter and sealing the top shut. Then run a tube with a slashcut to your exhaust system.
#2 is a drain, FYI.</TD></TR></TABLE>
Yup, #2 is a drain. You either manually drain it into a pan, or you route it back into the engine through one of the allen ports on the back of the block. Probably dont have to route it back into the engine if you are NA though cause it might be overkill. For the top port you can leave that filter on there and it will vent naturally. Or you can run a vacuum assist by taking off the filter and sealing the top shut. Then run a tube with a slashcut to your exhaust system.
So what exactly do people do to run it to the exhaust?
I thought that if i run the drain to the exhaust, it will pull vacuum from the motor, and help free up some hp. Kind of like using a vacuum pump
I thought that if i run the drain to the exhaust, it will pull vacuum from the motor, and help free up some hp. Kind of like using a vacuum pump
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Power Rev Racing »</TD></TR><TR><TD CLASS="quote">So what exactly do people do to run it to the exhaust?
I thought that if i run the drain to the exhaust, it will pull vacuum from the motor, and help free up some hp. Kind of like using a vacuum pump</TD></TR></TABLE>
the purpose of the catch can is to catch and store the oil. if you are going to run it into the exhaust at an angle to create vacume then you dont really need the can.
i guess that you *could* run a line from the drain on the can to the exhaust and it would essentially do the same thing. Only difference instead of running straight from the VC to the exhaust it would go through the catch can first.
I thought that if i run the drain to the exhaust, it will pull vacuum from the motor, and help free up some hp. Kind of like using a vacuum pump</TD></TR></TABLE>
the purpose of the catch can is to catch and store the oil. if you are going to run it into the exhaust at an angle to create vacume then you dont really need the can.
i guess that you *could* run a line from the drain on the can to the exhaust and it would essentially do the same thing. Only difference instead of running straight from the VC to the exhaust it would go through the catch can first.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Power Rev Racing »</TD></TR><TR><TD CLASS="quote">So what exactly do people do to run it to the exhaust?
I thought that if i run the drain to the exhaust, it will pull vacuum from the motor, and help free up some hp. Kind of like using a vacuum pump</TD></TR></TABLE>
people use the exhaust as a vacuum source using a slashcut tube. HOWEVER the outlet you chose #2 is the drain. Any oil or fluid collected will end up being drained into the exhaust. ALSO the top of the catch can is ventilated to the atmospehere. In order for the slashcut exhaust vacuum assisted method to work you need to have a sealed catch can.
If you want a vacuum assisted catch can then it needs to be a fully enclosed catch can with no filter like the one in your pic. People use the top part of the can to tap their vacuum line into because then you dont have to worry about oil flowing through it which will disrupt the vacuum.
An atmospheric vented catch can like in your pic will be a lot easier. You dont have to worry about running slashcut tubing to the exhaust. The excess crankcase pressure gets released into the atmosphere and the can absorbs the liquid vapor. If you run a slashcut tube from your #2 port to the exhaust it wont generate enough vacuum because the top part of the can is vented to the atmosphere (big vacuum leak). If you hook up a line to #2 and run it to your exhaust then all that is is a drain line that will get your inner exhaust piping all oily and messy.
I thought that if i run the drain to the exhaust, it will pull vacuum from the motor, and help free up some hp. Kind of like using a vacuum pump</TD></TR></TABLE>
people use the exhaust as a vacuum source using a slashcut tube. HOWEVER the outlet you chose #2 is the drain. Any oil or fluid collected will end up being drained into the exhaust. ALSO the top of the catch can is ventilated to the atmospehere. In order for the slashcut exhaust vacuum assisted method to work you need to have a sealed catch can.
If you want a vacuum assisted catch can then it needs to be a fully enclosed catch can with no filter like the one in your pic. People use the top part of the can to tap their vacuum line into because then you dont have to worry about oil flowing through it which will disrupt the vacuum.
An atmospheric vented catch can like in your pic will be a lot easier. You dont have to worry about running slashcut tubing to the exhaust. The excess crankcase pressure gets released into the atmosphere and the can absorbs the liquid vapor. If you run a slashcut tube from your #2 port to the exhaust it wont generate enough vacuum because the top part of the can is vented to the atmosphere (big vacuum leak). If you hook up a line to #2 and run it to your exhaust then all that is is a drain line that will get your inner exhaust piping all oily and messy.
Trending Topics
Who is Mr Robot?
iTrader: (2)
Joined: Jul 2004
Posts: 21,474
Likes: 10
From: ATL - Where the Pimps and Players dwell
and just so you know, the moroso you have there is intended to be an overflow/breather for a dry dump oil system... the moroso/endyn catchcans have 2 ports and one drain... the an fitting on there looks to be around 12 or 14, just the right size for a dry sump system
Thread
Thread Starter
Forum
Replies
Last Post
Rod.
Forced Induction
7
Aug 8, 2004 01:42 PM





