DelSolMarine

I have one of the 1 gallon catch can setups on my del sol and its giving a horrible smell inside my bay that its given me a headache when im driving. I wanted to know if anyone has taken off the filters and rerouted the fumes under the car and if that solved the problem?

2 pictures of the setup are attached.

AcuraIntegraLS-T

I had the same issue with my T1 can that I had before. One time on the highway it looked like i had smoke in the car when the sun hit it just right. I plan to run hoses off where the filters are and down under the car for my new setup, which will be daily driven. I will replace the filter back on top before going to any type of track event so that they wont think Im trying to put oil down on the track. I don't see any issues with this unless your having oil come out of the filters like people have had when using smaller catch cans. Try it out let us know if anything unexpected comes up.

DelSolMarine

well i thought of the idea of running hoses down under the car as well but i dont want it to look ghetto either... i am curious to know if something could be designed for these systems to improve that...

runsfromdacops

if you run hoses under the car i would still use a fillter if you have a drain back so you dont get dirt and stuff in your oil.

ebola_one

From what I can see, the place where that plastic trim lives below the windscreen, shouldn't there be a rubber seal there? I took the rubber seal off on my DA & suffered a similar smell problem, put it back and the problem went away.
Your aircon intake vents are less than two feet from the breathers on top of the can!

shifty35

Use the recirculate setting instead of the fresh air setting.

DelSolMarine

shifty-well that helps a little bit but not completely and I have the ac manifold and as soon as I get the ac condensor install this would not be a resolution.

ebola-yea i took that off to allow heat to escape which could infact be a big part of the problem but it does smell like oil so I believe the majority of it is because of the catch can.

I sent an to brian at B&R fittings that would be a better looking result than just running hoses under the car. Hopefully we can get this thing done up. If so... I will post results!

welfarepc

i used a V8 style breather that is 1" in and a 5/8ths 45deg nipple coming out the top (it has an enclosed filter) and ran that down between the rear x-member and the chassis/firewall. it worked great and i didnt feel like i was going to die anymore.

Tjabo

Do people ask why you stink like exhaust when you arrive places?

Bailhatch

haha...
I just put mine on recirculate and open the windows now.

I used to have two 1" hoses running down the fire wall and behind the subframe and that worked much better for the smell.

rat city rex

Im gona have to do this. I just finished, and installed my catch can and I smell like Ive been living in a honda oilpan.

crucian

Problem is, when it rains it fogs up the windows then you cant see shyt.

shifty35

That's why you drive your beater in the rain, instead of your turbo Honda with no traction.

rat city rex

Except for me, my beater is my turbo honda. I dd my turbo car. And even with it on recerc. it still smells like texas tea.

DelSolMarine

i need to get these hoses installed and ran under the car to relocate the fumes... the recirculating thing is not completely making it stop and even having the recirculating setting on it still stinks in there from the catch can and it is infact the catch can.

00si2

Im going to give this a shot also. Ill post some results in a few days.

DelSolMarine

back from the dead...

so i never did anything with this except for changing out the filters with the shielded filters which actually was a drastic change... the blocked the fresh air vent behind the catch can so all the fumes basically were routed up and out by the fuse box with the shields....

well i am curious if anyone has routed the catch can fumes through the exhaust instead of just dumping them to the atmosphere in or below the engine bay....

if you routed them through the exhaust would the exhaust pull the fumes out the back of the car with the exhaust gasses or would it back itself up (the fumes and the exhaust) into the catch can......

racebum

you could get really creative. run the catch lines to a box with a k&n filter in it, then lines from that that box to the air filter tube. the air filter in the box would trap oil particles and the exit into the air filter tube will prevent the smell.

H22AFerio

yeah I gotta do somthing as well cuz during the summer i have the windows down and it doesnt bug me but during the winter It smokes me ut so Im driving with my rear windows down in the rain to keep the smoke out haha.

Tjabo

Gotta use a slashcut tube to suck those fumes into the exhaust BEHIND the catalytic converter if you have one, and you have to have a very free flowing exhaust system from there back. Oh, also it's necessary to utilize the standard one way valve in the slash cut tube if you want to maximize negative pressure in the tube. Otherwise the oscillations in the exhaust do something that results in less negative pressure in the tube without the one way valve.

H22AFerio

thats a good idea.

DelSolMarine

good point...

I wonder if a 2" pipe routed into the exhaust system behind the shift linkage would do the trick...

i already did the recirculation on the wastegate.... i think recirculating crank case pressure and the blowoff valve would remove almost all of the smell from the engine bay... i would assume most of the smell was actually the dumptube...

H22AFerio

man with the fab skills I have seen in your thread you should be able to put somthing together haha

m3tech95

just outta curiosity, and since it wasnt asked already in the thread, OP did you even block off/delete all the firewall holes on the passenger side of the car? there were at least 4 on my 98 hatch not including the wire harness going into the cabin....had to seal it better...I had the same problem with my catch can and then i began using an angled piece of metal that vents the air from the top filters to the small space between where the hood meets the firewall...my hood was already tilted so it helped out alot....just let the passing air pull out the fumes from the engine bay and the catch can simultaneously....

A BeastyDC4

it may be a bad idea to route them under the car.. what if it rains and clogs up the filters??