I haven't done it yet but it is possible to access the PCV to intake hose from underneath the car. It's pretty tight but would take less time than removing the whole intake. The hose you need to remove is very short about 4 in. You remove the hose and place two longer hoses (re use the clamps) at the intake and PCV valve bib. The hoses have to reach you catch can installation. Then simply plug the two hoses into the catch can and you are done.
Anyone put an oil catch can on?
- Thread starter Young Roids
- Start date
Ya....I would either have to do this with out removing the intake or drop it off and have some one do this while I'm at work. I have ZERO time to be pulling my intake off. This car is my daily driver and if it's down, like at the dealer, I need a rental.
dadasracecar
Member
I've looked up and you can get to the hose w/o removing the mani but putting a line on the crankcase pcv fitting will be difficult to impossible w/o removing the intake mani.
Removing the mani also allows you to delete the vtcs and clean the gunk out of there. It's not that hard.
Remove the intercooler, remove all associated wiring harnesses, remove the throttle body, remove the serpentine belt, unbolt the powersteering pump, disconnect the two vacuum lines, disconnect the egr, remove the wiring harness and dipstick brackets on the front of the mani, pull the mani bolts, and there you are. If you're local, I'll do it for you for $$$.
Removing the mani also allows you to delete the vtcs and clean the gunk out of there. It's not that hard.
Remove the intercooler, remove all associated wiring harnesses, remove the throttle body, remove the serpentine belt, unbolt the powersteering pump, disconnect the two vacuum lines, disconnect the egr, remove the wiring harness and dipstick brackets on the front of the mani, pull the mani bolts, and there you are. If you're local, I'll do it for you for $$$.
I can't get those grimmy assed PICs out of my head that Whoosh posted. You know, when I baught this car I told myself I wasn't going to touch it. I have modd'd every car I have ever owned. I have built motors and done auto to stick tranny swaps etc... I've done it all. I have thousands of $$ in tools mechanical and electrical. I couldn't leave it be. One of the first things I thought of when I drove it was the friggin PCV. All the new blown/turbo'd cars have this damn problem. The PCV drinks oil. And the fact that forced induction motors have looser than normal ring gaps doesn't help with idle and off throttle blow by either. Now this is in my head so...........I am going to friggin have to do it. Either pay some one or do it myself. Why did I ever go looking for a Mazdaspeed forum. I couldn't have just drove this thing for 3-4 years and traded it in like I planned right!! Grrrr... (bang)
Oh well..........Why fight it.
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- SS MS3 GT
^ im located in RI as well. We should post this up in the RI thread on the other forum and see if we cant get a bit of a group discount on getting them installed at a shop.
I might just look around and find a buddy to help out... If you are definitally interested, let me know
I might just look around and find a buddy to help out... If you are definitally interested, let me know
Is there another fix for this to correct the " faulted design" on this ? I realize that cat a catch can will work for a reasonable price. Just wondering if the root of the problem should be resolved. btw awesome info from many thankyou. I changed up intercooler and saw the oil too.
Ya I have to get this done. I will probably just tackle it myself. Maybe not. Too bad we couldn't get Tasca to do it as a group thing! Hey, You baught your MS3 there I read. Off of Chanty too? LOL!! Small world. Ever dyno there? Nice friggin dealership.
Ah, don't blame Mazda. You have to have a (PCV) Positive Crankcase Evac. system on cars. Unlce sam says so. Most all forced induction vehicles swallow oil through the PCV. Heck. Some N/A motors with high compression blow oil right out the valve cover breather. Baffles. That is the only ticket. Massive amounts of baffling in the valve cover and were ever the heck the PCV is. The only fix here though is a catch can. Or don't run the PCV. But you NEED to vent the crankcase or you will blow oil right into that breather tube on the valve cover.
I have seen guys use a vented oil cap on cars like supercharged mustangs. Do you think this would help us on our MS3's to vent or relieve some pressure? Just curious if you or anyone else knew.
blacksheepms3
Member
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- Mazdaspeed 3
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AutoXRacer
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Yes. A vented crankcase with a good breather that is baffled can be used ***ONLY*** if you DO NOT run the PCV. If you do run the PCV then you can not run an open breather. The PCV will suck in unmeter'd air through the open breather and cause a lean idle and lean pops out the exhaust when you lift off the gas. Me personally. I hate PCV systems. I can live with a little gas stink under the hood in exchange for a clean intake system. A nice system would be to block/delete the PCV. The run a 3/4" ID silicone hose from the valve cover breather port to a small baffled catch can that has a breather on the top top. If you do not pull any vacuum on the crankcase (PCV) then you can run an open breather system on a MAF'd car. I've done it with GREAT results in the past. It just stinks a little.
mrfixin, good question! Andrade08, would I actually need the can if I had; a, lets say stainless steel 1/4" vertical pipe run to a filtered breather. that might allow oil to try to exit under pressure and allow it drain back into motor at idle or resting
No, cause the crank case pressure is beeing suck into the intake maniold under normal driving, that creates a vacum at the top VC PCV you tied into closeing it off completely so its worthles only when you hit boost will it actually draw crankcase pressure threw your set up and back into the manifold. So because when you drive your in vac about 95% of the time your sucking dirty blowby fumes, gas and oil into your intake while your OCC does nothing at all.
this is the way i did mine, its covers all crankcase blowby pressures in vacuum and also in boost and you only need one can still!!
