Hey guys, quick quasinoob question. Some parts were shuffled around during the time I bought my 05 TL and it ended up with a Fujita F5 coi. Now that I get a better look at things under the hood I'm noticing that theres a port facing towards the firewall right before the TB that has nothing attached to it. Does anyone know what I'm missing here, how much work/money is involved in rectifying the problem, and how much risk/damage am I involved in having unfiltered air coming in through that port? I assume it can't be good. I'll attach a stock photo so you know exactly which thing I mean. Its about 2" from the first clamp on the throttle body.

 

i think you're talking about the bypass valve, yeah? it's not a big problem. there's a piece that it connects to in the backside of the motor. it's not a big deal. you can plug the bypass valve and by the small filter to throw onto the bypass port (thing in the back of the engine...more towards side...it's visible), or you can purchase a small rubber funnel to connect the 2. if you need pictures, let me know and i'll go out and take some.

 

it's an easy fix...and you shouldn't have any problems with the unfiltered air part...
that is unless you take a hand full of dirt and shove it up there........

 

So the function of this is to give air directly to another part of the engine? If you wouldnt mind attaching a pic of the part of the engine that needs a small filter I 'll go look and see if one's there. Plugging the intake end seems easy enough

 

By-pass valve just in case you take water in through the bottom filter (only possible if you go through a HUGE standing body of water)

Give me a few minutes...I'll brb with a picture!

 

 

you see where the valve is coming off the tube, right? that leads back onto the block (above the exhaust manifold). i have the tube plugged from one end to the other, but where that tube is plugged in is where you can also take a small filter and plug on. either way works (i had a filter on, but being too lazy to replace it, i opted for the above). does that help? i think that's what you were talking about...........?

 

just put a damn silicon hose over it already instead of a that stupid plug..

 

Ha didnt know you had the same one, guess you knew what i meant. Def nothing hooked to the block there. Might as well hook up a hose, prob just as cheap as a filter. Thanks for the help. Nice clean setup.

 

I don't remember hooking that up on mine either. Hmmm?

I'll have to take a look now.

 

what are you guys talking about bypass valves....there is no bypass valve....that port you see on the back of the intake tube, is to connect a breather hose to the rear valve cover....which is the same way on the front valve cover connected to the intake manifold..if you look, you see a black hose jumping from font valve cover into the manifold on the left side...

there's oil evap and gasses inside the valve cover, and they have to go somewhere..that is part of the evap system, just like the crankcase gasses being routed back into the intake manifold, so is the valve covers....the port as i said is to connect the rear valve cover to that, which gives the gasses an escape path, and vacuum will suck them back into the intake manifold. Aside from all this, as you know, oil makes its way up into the valvetrain from the oil pump, but then it has to travel back down into the oil pan...the breather path also acts as a small vent, so oil can travel down quicker, (not that it wouldn't otherwise, but still)

that port wont save you fron water going into ur motor and hydrolocking for one, and 2nd, if that port was a path for the water to escape before it makes it in the combustion chamber, which isn't sufficient enough to begin with, but lets just say it is for arguments sake...how are you saving anything by routing water straight inside the valve cover, where it would mix with oil, and there goes ur bearing lube!


Now the next thing...you wont be hydrolocking anytime soon unless you take ur car for a swim in a river.
You can plug that hole completely so you dont suck hot air from the bay (even though its a small hole) and you can plug a breather filter in the rear valve cover.
Or, you can just grab a hose and plug each end just like it is on the pictures above. Its that simple!

 

fine. lol