ATTN: everyone who has a fliter on the valve cover breather
#81
I may try the 2 hoses to a breather can setup. Talking with the shop that built my engine, they've experienced seal/gasket failure because of excessive crankcase pressure when running high boost, they didn't say how high. They fixed the issue by drilling a large hole in the valve cover and running a large breather to it. I was only running 9-13psi with the SC, so I don't think I was experiencing the problem, but with the eventual turbo install, the boost level may be higher. Perhaps just gutting the PCV valve and use it as a nipple for that port, then connecting it to the can with the other nipple from the driver side would be enough.
#82
I was seeing evidence of CC pressure at 10psi. I swapped the PCV port with vent port since it was far less restrictive and that stopped any of the oil seepage. But when the boost went to 17psi it was back. So it's going to take a vent port on each side of the cam cover to a catch to solve my pressure venting issues- primarily because the FE has a divide cam cover from the exhaust/intake sides. Details here.
#83
[/QUOTE]
What if, in the interest of maintaining crankcase ventilation in both boost & off-boost (and emissions), a hose was in place of the VTA breather and routed to the pre-turbo intake? Other than simplicity, I don't see the benefits of a breather, and an additional filter could be placed in this line to reduce or eliminate oil contaminating the turbo inlet. Thoughts?
Edit: I just read the hondatech link http://www.honda-tech.com/zerothread?id=1199935 and this is listed as "Intake slashcut evacuation". The only downside listed is a gradual coating of the comp housing and intercooler, which might be alleviated with a clear inline fuel filter. Hmmm...
What if, in the interest of maintaining crankcase ventilation in both boost & off-boost (and emissions), a hose was in place of the VTA breather and routed to the pre-turbo intake? Other than simplicity, I don't see the benefits of a breather, and an additional filter could be placed in this line to reduce or eliminate oil contaminating the turbo inlet. Thoughts?
Edit: I just read the hondatech link http://www.honda-tech.com/zerothread?id=1199935 and this is listed as "Intake slashcut evacuation". The only downside listed is a gradual coating of the comp housing and intercooler, which might be alleviated with a clear inline fuel filter. Hmmm...
Last edited by adjemin; 02-02-2008 at 03:43 PM.
#87
Well looks like breather filter is coming off as well as the PCV being gutted...
Question for you guys, I get the idea of bringing both sources (capping the barb on the intake mani) and bring to catch can...Which has a breather filter on top..
But then what??
Gonna need a drain no???
And I'm guessing the drain would be to empty not to recirculate back into the oil pan??
And lastly do both lines end at the catch can or is the catch can spliced into both lines which will go somewhere else??
Inquiring minds with pvc pipiing want to know!
Question for you guys, I get the idea of bringing both sources (capping the barb on the intake mani) and bring to catch can...Which has a breather filter on top..
But then what??
Gonna need a drain no???
And I'm guessing the drain would be to empty not to recirculate back into the oil pan??
And lastly do both lines end at the catch can or is the catch can spliced into both lines which will go somewhere else??
Inquiring minds with pvc pipiing want to know!
#92
OK I didn't notice the little hat to atmo on the can.
If the 3 ports are connected (2 hoses + filter) via the catch can, it still doesn't make sense. May as well just leave one port on the cam cover open, and one closed; the open one should just open to atmo. Why place a filter at all? Just put a hose on one port, and vent the other hose to atmo, near the ground to let the oil drip out.
If the 3 ports are connected (2 hoses + filter) via the catch can, it still doesn't make sense. May as well just leave one port on the cam cover open, and one closed; the open one should just open to atmo. Why place a filter at all? Just put a hose on one port, and vent the other hose to atmo, near the ground to let the oil drip out.
#93
Let the oil drip out, all over a track, driveway, etc? If the valve cover has problems venting the excess pressure, then 2 3/8" hoses going to that can would be better than one. Maybe a larger filter than those cheapie small ones would be better as well.
I'm going to put a pressure gauge on the driver side port while in boost to see if the crankcase is experiencing any pressure, then modify if necessary.
I'm going to put a pressure gauge on the driver side port while in boost to see if the crankcase is experiencing any pressure, then modify if necessary.
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