jcfrx7

This is a 13b TII engine re-built last year. With all new seals including new Atkins oil control o-rings. I belive that one of these control rings went out on my front rotor. My question is can this ring get so bad that it fills the housing with oil and acts like a blow Apex? and what must of happend that this o-ring got damaged so baddly? or is as simple as saying these Atkins control o-ring are cheap?

alexdimen

iTrader: (13)

It's definitely straight engine oil in there? Sound like it could be the rings themself or the side housing.

There was some talk about those rings going bad by pineapple racing, but atkins, kevin landers, and others build engines with them on a regular basis. They've been in my FC for years and have over 25k on them.

dot_txt

iTrader: (1)

I doubt they are going bad. They seem to be very high quality from the engines I have seen. Although you can put them in wrong which might cause the problem you are having.

hondahater

iTrader: (2)

Are those seals like the Rotary Aviation ones? They use standard size instead of metric so it's a tad bit bigger and can be installed wrong, as in they can get pinched when you install them.

jcfrx7

Yes straight oil in the housing. Yeah I belive that the o ring got damaged.


I dont belive they were put on wrong because the engine was fine for a year and since this happened suddenlly while driving. I will be openning the engine an see how those o ring look.

Turbo II Rotor

iTrader: (2)

Is this a stock port engine? Does it do this with the oil cap removed?

jcfrx7

^
This is a street ported engine. I'm not sure about the oil cap because the oil is leaking so bad into the front rotor that it has a very hard time starting. The engine is already removed and wont be able to check that but explain about what you think with the oil cap removed would do.

Aaron Cake

iTrader: (1)

With that much oil in the housing, it's going to foul the plug quickly and run very poorly as you suspect.

Sounds like a damaged o-ring. Unfortunately this requires engine disassembly to fix.

jcfrx7

Yes all ready dismanteling. Does anyone know were I could find a thread on installing the o-rings. Maybe I did installed them wrong and I would like to read more about it.

jcfrx7

Ok Oil control rings were good. Now trying to find the root cause of loosing oil and front rotor bearing over heating from no oil. I cked the cooler hoses and those are fine. The turbo does not show any sings of oil been leaked out or burned. The only suspect I have now is the oil metering pump. Can this go bad and inject a large amount of oil into the engine till is all gone? I was on a long trip and I was noticing smoke at idle in each light.

jcfrx7

Pictures of damadged parts. Exept the heat spots on the Irons. Have to replace front and middle.

Tom93R1

iTrader: (2)

Was there any scarring on the plates? And how did the metal oil control rings look?

I would be amazed if the OMP went on the fritz and flooded the motor with oil, it almost has to be oil control ring related.

jcfrx7

there was some scarring and heat damadge on the plates. The rings look fine but I would problebly have to measure them to see if this was the cause.

j9fd3s

iTrader: (3)

um looking at the pics, the rotor was all over the housing, oil burning was a symptom.

possibly a rotor gear came out, e shaft bent...

alexdimen

iTrader: (13)

Good catch. Maybe excessive bearing wear from oil starvation allowed enough play for the rotor to contact the side housings? That rotor bearing in the 4th pic looks really ROUGH.

jcfrx7

I think you hit it right on the money. Because I was able to remove the bearing with out pressing it out. So I had an internal oil leak once the bearing moved. Solution solve. Thanks to everyone that help solved this mistery. Now I can relax and build another motor.