Hi guys
Im planning to turn my Fd in single turbo . Its neccesary to use a oil catch pan ?
If yes , who can tell the way to use it , connect ... etc
Thanks in advance !

 

I am single and currently don't have one. I noticed on my last dyno run I had a huge amount of "blow by" (smoke out the exhaust cause from burning oil). I talked to several people and they say a catch can will solve that problem. I think i have noticed it on the street maybe once in the 4 months I have been running my single setup. As for connecting it, I am not sure but it really couldn't be that difficult. Search around the forum and there's got to be tons of info.

Greece huh? Where in Greece? Must suck to mod you car there...Meaning expensive.

 

Yes, you should get a catch can. You can run a search there are a bunch of threads.

There are 2 nipples on the oil filler neck, on of them has a line that goes to the uim. I'd just pull it off and run it to the catch can instead. Then run a line from the catch can to the atmosphere with a filter or to the intake.

Its easy

Stephen

 

I run mine into a 20oz. plastic coke bottle - but easily make a catch can out of an aluminum energy drink bottle. Polish the aluminum and put on a little breather filter. I'd better get mine done before Deal's Gap event.

 

i run mine into a beer can.

 

hmm whats the bottom nipple for??? one w/out check valve

i just capped it

 

On a stock engine one runs to the UIM the other runs to the intake side of the primary turbo.

To get the best results use a sealed catch can (no filter) and run one line from the oil neck to the can. The outlet side of the can goes to a nipple you need to create on the intake side of the turbo.

No more crank case problems.

Chris

 

Under boost, how does the crankcase breathe when it really needs to? Or do you mean a nipple before the turbo? If the latter, won't oil accumulate in the ic/pipes etc.
I'm assuming a single trbo setup.

 

Right so without any ventilation (filter) on the catch can wouldn't oil vapor or residue be sucked into the turbo and accumalate in the I.C. piping and intercooler.

 

Did I say plastic coke bottle? I meant to say Fosters Lager beer can.....

 

The line to the UIM has a check valve closing under boost. The line that goes to the intake side of the turbo is constantly under vacuum which increases as the turbo spools up. The hose goes to one of the two nipples on the plastic pipe intake. Yes oil does accumulate inside the IC and piping assuming you don't empty it from the catch can.. I run a Greddy can so the two nipples are at the top of the can. I usually only get about 1 inch of oil in the can. The can is about 10 inches high. Yes I have a single setup.

Chris

 

Yes it is possible but the oil vapor has to go somewhere. If you have a filter you can't put the can under vacuum. Vacuum will insure the crank case pressure does not pressurize. The rotary engine has oil injectors so a little oil vapor isn't such a bad thing. Note: This does happen in stock form.

 

Thanks for the help...gonna go ahead and install a sealed catch can. I figure it can't hurt especially with a single turbo set up.

 

So the line thats supposed to go to the intake. Can I just put a nipple on my intercooler pipe after the compressor side of the turbo and use that? I'm assuming its the same as running it to the intake pipe?

 

No,this side sees boost you want it on the intake side which only sees vacuum at all times.

 

Actually, you are simply applying the same system as the twin's use - with a catch can in the middle to catch oil. Vapor will still get by but the majority of oil will end up in the can.

You should trace the lines on your car and you will understand what I am talking about.

 

I have a single turbo too with the same catch can. After 25 minutes on the track, the same Greddy catch can is 2/3 full. btw, I have a filter on the other end. I think for a street/drag race setup, the sealed system would be fine but for track events, I think to much of that oil would end up in the intake system.
I also run a filter off the turbo...

Here is a very good thread with write ups and lots of different ideas/suggestions:
https://www.rx7club.com/forum/showth...ight=oil+catch

 

does anyone have pics of the catch can installed?

 

Well I'm running a single turbo now. So I don't have any nipples on the intake side anymore. So where would be a good place to tap into? Or should I just vent this line?

 

Does anyone pic of the catch can installed ?

 

http://reganrotaryracing.tripod.com/catch.htm
HTH,
Crispy

 

Interesting - I usually get about 1 inch of oil in my can after a long weekend at the track. When I take it to the local drag stip I don't get anything. I think the oil backup happens when i make a left hand sweeping turn but I am not sure. I need to take it to an oval and drive both ways. My can is standing up on the frame support behind the radiator - vertically.

Chris

I will try to take a picture - if it quites raining.

 

I added a coupler between the intake housing and the filter. I tapped the coupler. I guess you could always tap the intake housing but I wouldn't recommend it.

If its a major problem you can vent to a can with a filter, I personally think it smells bad.

Chris

 

As far as smelling bad, I don't think it can get any worse then my straight exhaust with no cats. :-)

 

Ok I'm just going to vent the catch can. I don't autocross so I guess it will be fine.