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Replace oem PCV with krankvent?

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Old Dec 6, 2007 | 04:11 AM
  #1  
george1000cy's Avatar
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From: Cyprus
Default Replace oem PCV with krankvent?

Hi everyone. This is my first post here as you can see.

I recently bought a 1998 JDM spec-R and the pcv needs replacing. The local Honda dealer doesn't have any in stock at the moment.

I have a krankvent valve (ET Performance) available ( I bought it for my bike), so I was wondering if I could remove the oem pcv and put the krankvent in its place instead. I know how to install it properly, and will retain the rest of the oem setup.

Is this a good idea?

Thanks!
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Old Dec 6, 2007 | 04:43 AM
  #2  
B16B_coupe's Avatar
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From: Gods wonderland
Default Re: Replace oem PCV with krankvent? (george1000cy)

me myself i would stick with the oem part...

your saying the other part is for your bike?? i wouldn't recommend it
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Old Dec 6, 2007 | 04:50 AM
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redline32's Avatar
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From: ohio
Default Re: Replace oem PCV with krankvent? (george1000cy)

As long as the check inside the valve works it should be fine until you get a new pcv..just be carefull the check seats in the right way or your crankcase will pressure up a bit and probably push some oil past the rings
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Old Dec 6, 2007 | 05:52 AM
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From: Cyprus
Default

Thanks for the replies guys.
The krankvent I have is the "universal" one which can be used in any vehicle with approximately 3/8" breather hoses I suppose...
In theory it should be ok, the only concern I have is that it is very sensitive in its operation. I mean, it responds very quickly to changes in vacuum. I played with it a lot of times
Is this quick response a good thing or a bad one?
The oem pcv is spring loaded so it operates a tad slower than the krankvent. In theory, I guess the spring should provide some sort of negligible resistance before some pre-determined (by Honda) amount of vacuum starts to open it.
Now, this should not be a problem at idle or part throttle because the vacuum in the intake manifold is big enough to hold open any pcv, oem or aftermarket.
Could this be a problem at WOT when the vacuum in the IM is not too much? Is the oem pcv spring rated in a way that it holds the valve closed when only a little vacuum is present in the IM?
If the oem pcv never closes then why is it there? I mean a spring-loaded one-way valve would not be there if it's open all the time anyway... WHEN does the engine need the pcv to be closed??
I hope my question makes sense...
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