2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Dry combustion at no load situations.

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Old 07-22-04 | 09:05 AM
  #1  
Kenteth's Avatar
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Like Ghandi with a gun

 
Joined: Mar 2003
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From: Rapid City, SD
Dry combustion at no load situations.

I was thinking last night about dry combustion (no, little oil hitting the apex seals). It kinda made me think. During a no load situation (idle for example,) how important is completely lubrication of the seals? If you think about it, the engine is not under load... combustion process is happening at such a rate that the only thing it has to push is its own rotors, eshaft, flywheel, and clutch. As opposed to underload situations where combustion process is much more of a killa.

Basicaly it came to thought when someone was explaining why they wouldn't use the H20 trick. Saying it "washes away" the lubrication for the apex seals. With all due respect... Your engine (unless you're feeding it water on the highway-- **NOT h2o injection per boost**) is at idle or just above when you would be feeding it H20. During this no-load siatuation, how important is complete lubration? I'm not saying its not important, but I think its not nearly as important as someone would make it out to be.

Does anyone know the relation on the S5 OMP's when the TPS senses no throttle? How much do they inject stock at idle? I would think it wouldn't be nearly as much as an under-load situation at the same RPM (Forbid anyone tries to drive their car uner 1000rpm).

Does the stock S5 OMP Inject more oil at 4k RPM during load, than it does at 4k under no-load?
Old 07-22-04 | 10:38 AM
  #2  
White_FC's Avatar
Rotary Enthusiast

 
Joined: Dec 2002
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From: Darwin, NT, Australia
It is important.

I remember one time I didn't put premix in whilst not having a MOP, and it died at idle after a 10min drive.

After putting in a jerry can with premixed fuel in it, it started up fine.

So from this information I can conclude that it is not a good thing to do.

And yes, the stock MOP does inject more fuel when the engine is under load compared to when it isn't, this is what the throttle linkage is for.
Old 07-22-04 | 11:27 AM
  #3  
SureShot's Avatar
Seduced by the DARK SIDE
 
Joined: Apr 2001
Posts: 7,323
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From: Orange Park FL (near Jax)
Here is the S5 MOP white paper:
http://www.thecarricos.com/ACRE/Docu...ech90-7-12.pdf
It's a big file do to image clutter, so be patient with the download.

Last edited by SureShot; 07-22-04 at 11:29 AM.
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