3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

oil and fuel in catch can? problem ?

Thread Tools
 
Search this Thread
 
Old Dec 3, 2012 | 02:33 PM
  #1  
Arthur3328's Avatar
Thread Starter
Senior Member
iTrader: (4)
 
Joined: Oct 2010
Posts: 273
Likes: 0
From: NE philadelphia
oil and fuel in catch can? problem ?

starting to get oil and a bit of fuel in my catch can in my single turbo fd.

any thoughts on what it could be?
only under high boost.
happened after the track (road coarse)

any info would help... should i be worried? or is it ok ?
Reply
Old Dec 3, 2012 | 02:58 PM
  #2  
Tem120's Avatar
Rotary Freak
Tenured Member 05 Years
iTrader: (5)
 
Joined: Sep 2011
Posts: 2,824
Likes: 6
From: Miami
Do you have the OMP? its a known fact that fuel gets mixed with oil through the ( Oil metering pump ) this is one of the reasons why we're supposed to use such thick oil , because the fuel gets mixed with the oil and deludes it and thins it out.

I used to use Klots premix in my fuel it has a unique smell , and everytime I checked my oil stick if you smelled it you could smell the klotz mixed with the oil .
Reply
Old Dec 3, 2012 | 04:56 PM
  #3  
DaleClark's Avatar
RX-7 Bad Ass
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (56)
 
Joined: Jan 2002
Posts: 15,622
Likes: 2,724
From: Pensacola, FL
The OMP doesn't contribute to oil dilution, that's a one-way system injecting oil into the motor. Blowby happens in the combustion chamber, that's what dilutes the oil. This is common on all rotaries.

That's normal to have a weird mix of crap in your catch can, nothing to worry about.

Dale
Reply
Old Dec 3, 2012 | 10:55 PM
  #4  
cewrx7r1's Avatar
Eye In The Sky
Tenured Member: 25 Years
iTrader: (2)
 
Joined: Feb 2001
Posts: 7,941
Likes: 133
From: In A Disfunctional World
Straighten out those newbs Dale!
Nothing worst than a newb spreading bad info to other newbs.
Reply
Old Dec 5, 2012 | 07:09 AM
  #5  
Arthur3328's Avatar
Thread Starter
Senior Member
iTrader: (4)
 
Joined: Oct 2010
Posts: 273
Likes: 0
From: NE philadelphia
Anything to do with my oil control rings ?car doesn't smoke or anything. I run e85 btw.
Reply
Old Dec 5, 2012 | 07:52 AM
  #6  
mono4lamar's Avatar
In the burnout box...
Tenured Member 10 Years
iTrader: (32)
 
Joined: Oct 2003
Posts: 4,453
Likes: 2
From: New York
If its excessive fuel dilution (really really strong smelling) you could have a couple problems.

VERY RICH TUNE; I mean ridiculously rich.
You keep flooding out the car while attempting to start.
Sideseal clearance is poor.

Oil control rings won't matter here. If they were bad you would receive smoking. It's normal to have a little fuel smell to the oil, it's a common thing with rotary engines.
Reply
Old Dec 6, 2012 | 03:03 PM
  #7  
cewrx7r1's Avatar
Eye In The Sky
Tenured Member: 25 Years
iTrader: (2)
 
Joined: Feb 2001
Posts: 7,941
Likes: 133
From: In A Disfunctional World
Since converting my OMP to run Redline Racing 2 cycle oil, adding 8 oz of Pettit Protek-R to a full tank of gas for more lubrication, and going WI; my blow by has decreased and compresssion has increased.
Reply
Old Dec 6, 2012 | 03:27 PM
  #8  
Tem120's Avatar
Rotary Freak
Tenured Member 05 Years
iTrader: (5)
 
Joined: Sep 2011
Posts: 2,824
Likes: 6
From: Miami
Originally Posted by DaleClark
The OMP doesn't contribute to oil dilution, that's a one-way system injecting oil into the motor. Blowby happens in the combustion chamber, that's what dilutes the oil. This is common on all rotaries.

That's normal to have a weird mix of crap in your catch can, nothing to worry about.

Dale
oohh I thought it was a bit fishy you'd think there was some sort of check valve or soemthing in the OMP . Thanks

and HEY! CEWRX7r1 I actually read that on a thread a few months ago haha But still glad to know the real reason for it .
Reply
Old Dec 7, 2012 | 06:36 AM
  #9  
Arthur3328's Avatar
Thread Starter
Senior Member
iTrader: (4)
 
Joined: Oct 2010
Posts: 273
Likes: 0
From: NE philadelphia
Cewrx71^ how did you convert? The ra thing?
Reply
Old Dec 7, 2012 | 06:44 PM
  #10  
lOOkatme's Avatar
Rotary Enthusiast
Tenured Member: 20 Years
iTrader: (19)
 
Joined: Apr 2002
Posts: 1,171
Likes: 11
From: Colorado Springs, CO
I have a RA adapter as well and running redline 2-cycle synthetic. I also premix a little (4-5oz per tank) and I have no blowby at all and my catch can is empty.

Car runs like a champ. I run 14.0:1 AFR down to 11.2-11.5:1 AFR at full boost 15PSI 6,000 ft.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Queppa
New Member RX-7 Technical
11
Nov 18, 2024 03:47 AM
trickster
2nd Generation Specific (1986-1992)
25
Jul 1, 2023 04:40 PM
alphawolff
1st Generation Specific (1979-1985)
17
Nov 17, 2015 05:57 PM




All times are GMT -5. The time now is 10:03 AM.