The B20VTEC discussion thread

[VTec1987]

Lets just say you did take the filter off and ran it straight to the IM via the pcv valve,
Any chance the oil from the catch can go back into the IM?

[Chr1s]

Don't worry about your PCV valve.

With the breather setup you no longer need that piece of shit setup. If you want to be emissions legal I can supply kits with the full coy to adapt the breather can to run to the intake manifold and by pass the standard PCV setup. Oil MAY end up in there but the moroso can I use is an oil/air seperator so I highly doubt it. I can show you how to run this with a normal setup if you already have one anyway, all you need is a PCV valve.

With a B20 I would run as many breathers as possible, especially being high comp. On a normal build you will be cranking out more blowby than you can evacuate properly. The key to good ring life and engine power is minimising the pressure in the crankcase, this is one major advantage of a dry sump system which pulls vacuum in the crankcase. With our breather setups, we can at best attain atmospheric pressures in the crankcase.

I would F off the OEM PCV setup. Block the port on the IM. Run BOTH breather hex ports and if you can stretch your budget, tap into the rocker cover.

[riruiz_88]

how would B20 aftermarket headers sit when installed in an EG with B20vtec?
i know the bolt pattern is the same for all B series, but what would ground clearance be like? its a 4-2-1 header.

[MikeyG]

Is it tri y?? Apparently it's not good for ground clearence. You want a decent header with ground clearence get genuine SSR headers or Genuine RMF headers both expensive as shit

[eg5civic]

i got tri y headers man, and they are shit for clearence... say.... a tube lower than my sump.. so near 25=30mm lower than your sump

[tinkerbell]

Lets just say you did take the filter off and ran it straight to the IM via the pcv valve,
Any chance the oil from the catch can go back into the IM?

this is how i do it (2.5MB):

[tinkerbell]

you can see a breather filter on the rocker cover, but i actually run the OEM line from the intake pipe to the rocker cover...

[Benson]

Thats a balling breathing set-up

[VTec1987]

thank tinkerbell...
I know how to run my breather kit now

[riruiz_88]

reason i asked if aftermarket B20 headers would fit EG with B20vtec, i have found a nice set and for cheap too. but i also want ground clearance as well, and i dont wanna fork out the money if it not gonna fit. thanks for help boys

[MikeyG]

If you want ground clearence get jdm itr 4-2-1 headers

[tinkerbell]

the 96 spec ones?