I just pulled apart my oil catch can, which i am modifying to include stainless steel baffle.Anyway i found it had collected 65mL of Very black oil in the 5.5 months its been on the car. Keep in mind i am a daily driver of an auto SI H23A1 BB2 and i dont push it hard very often, and have only reached high speeds approx twice in the last 6 months. Just wondering how much oil you other Luders are collecting? I will check mine again in 6 months once i have put it back on with the baffle, just to compare how much more it collects.

 

I would like to know this aswell. I am installing a catch can setup and would like to know generally how often it will need to be emptied.

Personlly, my motor burns very little oil, compression is 184 accross the board, overall its in great shape. So wouldn't mind knowing on average how much its going to need emptying.

It seems to be a broad range too. Some have no collection, and others like listed above have a bit.

65ml in 6 months doesn't seem too bad though anyway?... I probably spill that much when I decide I'm stedy enough to pour it without a funnel LOL.,

 

Can any of you explain the purpose of a catch can ? I've seen them alot lately and I dont really grasp the concept of pulling oil from the engine . Why not just let it recirculate ?

 

the idea is to seperate the oil from the air thats going into the engine. OEM intakes use the slash cut on the intake tube to the v-cover that actually forces air into the engine. when the pressure inside the engine gets pretty high the PCV valve opens and allows all that air back into the engine. problem with the stock setup is that the PCV frees gases that have oil mixed with it back into the intake manifold. that lowers octane, air/fuel mixture, and dumps oil into your intake period, etc... the catch can (atleast on a all-motor car) seperates the oil from the air going back into the engine so its a clean burn. Alternately, with a high-comp setup or a boosted setup, crank case pressure gets higher than what the stock PCV can handle, so additional breathers are made so the pressure gets relieved from the engine to a external can (catch can). that oil that gets trapped there can get drained back into the block (b-series, dunno bout us h-guys), or can be emptied out. basically a catch can "catches" the oil from going back into the engine. hth.

-l8r

 

I used to get some oil when I drove my car 100% of the time, but now we have other cars and I rarely have any oil in there... I would say I used to get 1/2 cup every 6 months or something like that daily driving it (H23 with Greddy can & plastic wool baffles).

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8_6 luder &raquo;</TD></TR><TR><TD CLASS="quote">Can any of you explain the purpose of a catch can ? I've seen them alot lately and I dont really grasp the concept of pulling oil from the engine . Why not just let it recirculate ? </TD></TR></TABLE>

The oil is not recirculating, it is being sucked into the intake air and it coats the inside of the intake manifold and/or gets burnt in the combustion chamber. The catch cans goal is to filter it from the air so it doesn't go into the IM and combustion chambers.

 

Thanks for the replys. Sorry about the poll , should have just posted thread as a question. Anyway, i have fully pulled apart my catch can and tomorrow i will get some stainless steel wool to fill it up. Then put it back together and check for leaks before i put it back in the Prelude. I will see how much oil i get in the next 6 months with the baffle in there it help catch more of the oil vapour. I am relieved that the catch can i was given by my wife, which i chose, is a good one. I thought i had bought a dud, but its been working well even without the baffle and no leaks. So i can vouch for TWE oil catch cans, but beware that their are identical looking units which all poorly constructed and leak. I was pissed when nooneknows told us about the mfactory group buy cause i am out of cash at present. So i am glad that my investment has paid off. And thanks to all you guys who in past threads have discussed the need for a baffle, which i had no idea about prior to getting my catch can. I thought i had done all my research but i missed a pretty important point. H23A1's sure do push out a bit of oil, i was very happy when i emptied my catch can last night, that the very black oil that came out of it didnt end up going through my intake manifold. I will post some pics in the next few days. Keep Rolling

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AmauryR &raquo;</TD></TR><TR><TD CLASS="quote">the idea is to seperate the oil from the air thats going into the engine. OEM intakes use the slash cut on the intake tube to the v-cover that actually forces air into the engine. when the pressure inside the engine gets pretty high the PCV valve opens and allows all that air back into the engine. problem with the stock setup is that the PCV frees gases that have oil mixed with it back into the intake manifold. that lowers octane, air/fuel mixture, and dumps oil into your intake period, etc... the catch can (atleast on a all-motor car) seperates the oil from the air going back into the engine so its a clean burn. Alternately, with a high-comp setup or a boosted setup, crank case pressure gets higher than what the stock PCV can handle, so additional breathers are made so the pressure gets relieved from the engine to a external can (catch can). that oil that gets trapped there can get drained back into the block (b-series, dunno bout us h-guys), or can be emptied out. basically a catch can "catches" the oil from going back into the engine. hth.

-l8r</TD></TR></TABLE> thanks for the in depth explanation , i will have to add to my mod list after all .