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B20 turbo- what to do with PCV ?

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Old 21-Jan-2008, 03:28 PM
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B20 turbo- what to do with PCV ?

My setup consists of b20b (1996), this motor is going to ran on low boost 6-10psi. With low boost what should i do with the pcv system, whats the easiest and cheapest soloution.. Im going to be running the valve cover breather to the atmosphere.

Keep the stock pcv system, untouched or take out the pcv, run it open to the atmosphere and block the nipple on the IM? I know that i will get crapier gas milleage, and that this is illegal, and it wont pass emmissions, but i dont care about all this.

Whats would be best for my new engine,?/?
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Old 21-Jan-2008, 03:44 PM
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Originally Posted by honda1b6a
take out the pcv, run it open to the atmosphere and block the nipple on the IM? I know that i will get crapier gas milleage, and that this is illegal, and it wont pass emmissions, but i dont care about all this.

That would be what I did.
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Old 21-Jan-2008, 04:58 PM
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whats best for your engine is to have a vacuum source at the end of your crankcase vents.

What I would do, is use the stock pcv hose (with no valve) run it to a catch can, I would also remove a 14mm hex plug in the back of the b20 blocks, install a fitting for it, and run another breather to the same catch can, then i would find a vacuum source for it. Either pre-turbo or exhaust slash. Or if you want to spend big bucks get a breather catch can.

But the cheapest solution is to unhook the pcv valve and block the vacuum port I guess, but this is not the best for your engine.
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Old 21-Jan-2008, 06:18 PM
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I dont want to spend big bucks lol im broke as it is with university.. IF i leave the pcv system alone, it would close when the motor sees boost right? Preventing boost from entering?

what about if i leave the PCV connected and vent the valve cover one? Going to be running low boost aswell.
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Old 21-Jan-2008, 07:40 PM
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aside from tuning, i'd say crankcase vent on a boosted motor is the most important thing to consider.

YOu may be broke, but you'll be even more broke after your rings are fried.
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Old 21-Jan-2008, 09:19 PM
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lol well said, ive decided im going to get those Krank vent mini things. They work well by stopping boost from entering but still having a vacc source to suck all that **** out. They add horsepower too.
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Old 21-Jan-2008, 10:47 PM
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i doubt they add horsepower, but i do know for a fact that they work and work well.
And by the time you add up everything you need for a catch can it'll prolly cost around the same.
I'll most likely be buying another krank vent mini system for my boosted CRX.
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Old 21-Jan-2008, 11:49 PM
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i just ran both the pcv port on the valve cover and the nipple directly to the pre turbo intake. that way its atleast legal in the sense that your recycling your crank gas gases just like in stock turbo setups.
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Old 22-Jan-2008, 06:34 AM
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http://www.theoldone.com/components/breather/i used one on the rocker cover and one on the block...$200 each from what i remember.
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Old 22-Jan-2008, 08:56 AM
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i think the krank vent minis are the best bang for the buck,, very popular with s2000s.. Now gonna try and find some local if not gotta order one.
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Old 22-Jan-2008, 10:41 AM
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i couldn't find any local, and if you do they'll just be ordering them from s2000.com and charging you more for them.
Krank vent minis are nice b/c they also keep things legal.
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Old 23-Jan-2008, 01:13 AM
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where'd you buy this krank vent mini?
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Old 23-Jan-2008, 11:23 AM
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www.s2000turbo.com
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Old 23-Jan-2008, 04:56 PM
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i just odered mine, shipping was like 15 bucks, http://automotivespeed.com.. better than running 5 feet of lines and a catch can, cluttering the engine bay even more lol, imo
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Old 23-Jan-2008, 05:03 PM
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Originally Posted by chris_v2
aside from tuning, i'd say crankcase vent on a boosted motor is the most important thing to consider.

YOu may be broke, but you'll be even more broke after your rings are fried.
I couldnt agree more, on both points .
Stock honda motors were never ment to see boost.
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Old 23-Jan-2008, 05:12 PM
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hey.. whats up brian
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Old 23-Jan-2008, 05:15 PM
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Not much, just at work getting paid to surf the net

Zeeman post up some pics of the Krank vent setup, i want to see how its plumbed
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Old 23-Jan-2008, 08:25 PM
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I bet many ppl dont even look at the pcv when boosting their cars considering theres tonnes of boosted cars on here, and like 4 ppl replied with what they did with their pcv lmao, something so simple but vital to a engine.
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Old 24-Jan-2008, 06:13 AM
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NOTE: I don't have a boosted car

ok so here's my question. why can't you just hook it up up stream of the Turbo to an intake pipe thats not pressurized?
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Old 24-Jan-2008, 06:45 AM
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you can..you can put it anywhere before the compressor(which is what ive done) you wont get much vacuum though in idle..but once your boosting it pulls in about 10-15HG which is alot better than just dumping it.
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