MakoDHardie

Hey guys, I just picked up a catch can today finally. Its the original GReddy style- long rectangular box. It can be mounted horiztonally or vertically and I'm trying to figure out how to hook the thing up. Its got the thick *** -10 hose that I have no idea how to hook up to anything on our car. The only thing I can think of to do is to go to a hydraulic place or order something from Summit/Jeg's to use more of a decent sized line like -6 or -8. If anybody has any pictures of their cans mounted, I'd like to take a look at them.
Thanks,
-Dave

btw, the search function was not working at all while I was trying to search for the combinations of oil,catch can, greddy, etc.

Mahjik

iTrader: (1)

You might try posting in the Race Car Tech section as that's not normally a "street car mod".

MakoDHardie

Mahjik, are you serious? I figured most of the street cars out there would have considered a catch can, especially since the stock turbos tend to blow by a decent amount of oil themselves. I'll check in the race tech section. Thanks.

7racer

I think crispy has a write up

http://reganrotaryracing.tripod.com/catch.htm

and any ideas what going on with the forum?

MakoDHardie

thanks,7racer. I'll check that link out. I haven't checked today, but the search function was just taking forever to respond and then giving me error messages.

Mahjik

iTrader: (1)

You should really only experience the oil problem (of the oil going back into the intake trac) on hard cornering. While I'm sure some people do some aggressive driving on the street (where they really shouldn't) the track guys are the ones that really benefit from this type of mod.

MakoDHardie

I messed around with placement last night. I have a few positions to work with, but I have to make a Home Depot and maybe a hydraulics store run later to sort out the problem of getting hoses and fittings that are more in the range of the vacuum nipples that they'll be connecting to. 15mm is a little bigger than anything but the radiator hoses in our cars. The oil in my car is still clean from the rebuild, but its still getting into the intake so its about time to take care of that before it starts getting nasty again.

MakoDHardie

Mahjik, I am aware of that. I really drive pretty slow on the roads, but I am, for better and worse reasons doing constant maintenance on my car and when I had all the manifolds off last weekend, there was a significant amount of oil in the intake. I don't have an instrument to measure g-forces, but I do tend to test my car's new suspension setup a little bit on on/off ramps when the weather and traffic is right. I can't be putting that much cornering force on the PCV system, but at least enough to know that my rear sway bar needs to be adjusted back to the normal setting and my tire psi needs to be rechecked so I can tell if my alignment is still off after 2 in a week and a half.

Another reason why I'm getting oil in the intake is also probably because I went non-sequential and I believe I blocked off the end of the hardline that completes the vacuum vent from the filler neck. Having the turbos on and off the engine, and then in and out of the car in the last few weeks caused some extra hose changes and I missed that one.

Mahjik

iTrader: (1)

I would also bet on the line problem more than the "on-ramp" fun. While I to enjoy "stretching my cars legs" every now and then on public streets, I never experienced a signifigant amount of oil in the intake from those fun moments like I do at the track.

I'm not saying it's not a worth while mod, I'm just suggesting you'll get more info from the Race Tech guys.

MakoDHardie

oh, yeah, deffinitely. I know there's not much that comes up from the neck on on/off-ramps. I know how race cars can gargle their own oil when they're hitting turns on the track. I just didn't want this to come off as me trying to get one more thing for my car to make it look good. I didn't want to spend that $100 bucks, but when oil in the intake dripped out last weekend, I figured I should do something about it between now and the time I start shopping for replacement turbos.

Thanks again for the info.
-Dave

rdavidsrx7

Dave shouldn't you also ask about your disco stew headlights...or did ya get that figured out.
PS i'm kinda hoping to see the headlights dance before you fix it cause I'm sure it is funny as hell.


Back to your topic.... that hard line that you are speaking of, if that is capped off so the oil filler can't breath you will get horrible amounts of oil blowing past your seals on boostand then for a few seconds (up to 15 secs) afterward. I had pinched my line when I put the airpump back in and was experiencing tons of oil blowing past my seals because the oil sytem could not vent anywhere.

MakoDHardie

I installed the catch can today. Its set up in an interesting way. For the filler neck, I have the one nipple that comes out the side (originally vents to the UIM) is connected to my catch can which vents to the vacuum of primary turbo's intake pipe. The other nipple on the filer neck that aims downward- connects to the hardline with a short hose- that hose is still connected, but the end of the hardline has a nipple on it. I will probably get rid of that hose on that bottom nipple because the blow by is making it to the catch can, however I'm assuming any residue that is settling in that arm of the filler neck just drains down through that hose into the hardline and gets gummed up in there. I'll probably get a Y or 3-way connection and put another hose from that nipple into the catch can's intake line. I just drove some lazy miles down to Maryland this afternoon, but there was still some frothy blow-by in the catch can's feed line. Glad I decided to keep the clear hose instead of using braided or black line.

Bob- my headlights were fine and decently behaved on the trip down to the boat today, and somewhat on the way back, but when I stopped to fill up half way back, they started actin' a fool for about 25 minutes straight. And when I pulled the car in the garage, they went off non-stop again after the car shut down. Ridiculous. I've got a new TNS relay coming in tomorrow so hopefully that's the main problem. If its not, I may need to find someone with an OBD-I tool so I can figure out what the **** my car thinks it's doing because its very distracting, runs the battery down while the car's off, and probalby kills the hell out of the motors themselves. It also makes the car look stolen.

93BlackFD

your turbos blowing oil means you need new turbos, not a catch can, a catch can has nothing to do with turbos, it has to do with your oil pan/crank case

MakoDHardie

Here's a few shots of the catch can installed:

Sesshoumaru

iTrader: (1)

it's more of a common mod in the FC's (they have write ups)

I have one on my FC.

What is the particular question? They all work the same.

I think he was refering to blow-by.

MakoDHardie

btw, I do know that turbos and PCV oil content are not related. I probably phrased it wrong if I mentioned that earlier. My turbos are still in good performance shape but they are orginal and have 76k miles on them and weren't rebuilt with the new motor and non-sequential conversion that just happened.

After tonight, I'm sure the oil in the intake has to do with the turbos since there was only blow-by froth in the catch can tubes, even though there's no way I took any turns that would gargle some oil up into the lines. My car's still in the adjustment phase for a while- breaking the engine in and adjusting the suspension a little. I doubt the catch can will be used for much more than catching the blow-by for a while. In the mean time, saving up for the single investment will be the way I'll take care of the rest of the crap in the intake.

MakoDHardie

Here's the pictures for those who just saw x's....

DamonB

Good News: No more red x's

Bad News: Now we have blue clocks

...as for your intake oiling problem...

Oil gets into the intake one of two ways: either the turbos are spewing it due to leaking seals or the primary intake (stock twins) is sucking oil from the oil filler neck. How do you tell? Remove the plastic primary intake elbow and look inside. If there's oil inside it then the oil is coming from the oil filler and a catch can may help your problem. If the elbow is dry then the oil is being introduced after the compressor which means it's time to start thinking about turbo rebuild or replacement.

MakoDHardie

DamonB, thanks for the notes. The filler neck is no longer connected to the intake elbow on the primary turbo....well, actually it is through the catch can, but I had those other lines blocked off before. Turbos do need to be rebuilt if I'm going to keep them in use, but I plan on getting a single soon, so I'm not worried about it for another few miles.

btw, how come my pictures won't post? noone else is having problems with image station or webshots.

twokrx7

iTrader: (1)

You're not alone, I haven't been able to upload pics for months.

I used 1/2" hose for my catch can and plumbed it from the top of the oil fill cap. The catch can is by the passenger headlight so I could vent it into my single turbo air filter.

MakoDHardie

Yeah, I used the half inch hose to fit the adapters to for the can's original fittings. I used the regular 9mm hose for the plumbing to the filler neck and intake pipe.

I loaded up a bunch of pictures on my Image Station account last night. With shots from my new motor and suspension work. Here's the link:

http://www.imagestation.com/album/?id=4287019539