2005 AR230 saga continues, now I have water in the oil

[buckbuck]

pictures?

 

[cybuch]

pictures?

I posted pictures on the first page, you can clearly see there isnt any gasket maker on the seal.

 

[cybuch]

Well, after a few runs and a few oil changes, the problem is still there. Water in the oil. I don't think it is coming into the cylinders, as I don't see any signs of water in there and it runs perfect. Any other thoughts? Maybe the oil cooler? Crack in the block? Here is what I have done, checked the exhaust manifold and replaced gasket, replaced the water outlet tube gasket going into the head and valve cover gasket. Checked for water leaks at the water cooling lines going into the exhaust manifold, possibly spraying into the intake. I am at a loss. Any help is greatly appreciated! And no, this isnt on my Flyboarding motor.

 

[Gym]

@cybuch how bout disconnecting your water inlet line coming off the pump and replace it with an air compressor line using 5 - 10 psi. You could pull the spark plugs one at a time to see if you hear the air to check for head or manifold gaskets or cracked block. If nothing there you could pull the dipstick to see if you hear the air there or at the water box outlet.

 

[zipper]

Help like this...is why i joined this site. @itsdgm is spot on again. Thanks I currently do not have H2O in oil, but now know where to look if i do.

 

[buckbuck]

That is a great suggestion, @Gym

 

[cybuch]

@Gym thats an interesting idea. I will have to contend with the thermostat, but it will get me down the path, thanks!

 

[itsdgm]

Sorry @cybuch to hear that you're still having issues with this. I'm currently trying to figure out a way to pressure test my block (I have a crack in the outer cooling jacket). Then I'll attempt to have it welded and re check to ensure that the leak is fixed. But I don't have any water mixing with oil. All of my water is simply leaking into the bilge.

Imho, the next place that would make sense for you to check would be the oil cooler (as you stated above). Possibly psi check the water lines running through there to see if there's any leaks.

Hope you figure it out. As always, take pics and document how you psi check it. I'll be testing my block soon too. Any tips would be appreciated.

 

[cybuch]

@itsdgm I was going to start at it this weekend, but my football-self just didnt agree. I will most likely start at it next weekend. I am going to attempt to pressure test the block, I will have to figure out some way to block the exhaust ports. Maybe build a metal plate and bolt it on. I will snap some pictures and keep you posted.

 

[itsdgm]

@itsdgm I was going to start at it this weekend, but my football-self just didnt agree. I will most likely start at it next weekend. I am going to attempt to pressure test the block, I will have to figure out some way to block the exhaust ports. Maybe build a metal plate and bolt it on. I will snap some pictures and keep you posted.

Thanks @cybuch and good luck with the testing. From what I've seen, read and heard there are slight differences in the path of cooling water flow between your engine and my non HO engine. On mine it appears on that the water inlet splits and sends water directly to the oil cooler, block and exhaust. The water exits the oil cooler behind my thermostat housing and then goes through a hose connecting down line in the exhaust. It looks like you could easily block off one of those hoses and set a gauge on the other to test it out. I'm really curious as to how you block things off and what gauge and valves you isle for this. Thanks again for keeping me posted.

 

[Gym]

@itsdgm I was going to start at it this weekend, but my football-self just didnt agree. I will most likely start at it next weekend. I am going to attempt to pressure test the block, I will have to figure out some way to block the exhaust ports. Maybe build a metal plate and bolt it on. I will snap some pictures and keep you posted.

@cybuch I was thinking about how to seal off your exhaust after my air pressure suggestion. I would take off the hose going to the water boxes. You should be able to get a plumbers plug or possibly a kids inflatable ball to put in the outlet and inflate it to seal it off. I seem to remember my dad (plumber) had different sized plugs he would use to seal off pipes to pressure test.

 

[cybuch]

Ok, I finally got back to this after all kinds of home projects. I decided to do a compression test and I found that cylinder 2 is %75 of the other 3. I am thinking I may have a cracked head. Going to pull the motor next weekend and pull the head.

 

[itsdgm]

Ok, I finally got back to this after all kinds of home projects. I decided to do a compression test and I found that cylinder 2 is %75 of the other 3. I am thinking I may have a cracked head. Going to pull the motor next weekend and pull the head.

Good luck with this @cybuch im following your progress. I ended up with a cracked block on my cooling water jacket. After several unsuccessful welding attempts verified by pressure checks, I've decided to replace the engine with a similar hour used engine. That way I can rebuild mine later when I have more time for such a project. It appears that my block cracked just below one of the head studs. I believe this to be as a result of a weak casting of the block that cracked when I had the head worked on due to a stuck valve. So be careful when you tighten down the head Keep us posted, I'm following your progress.

 

[cybuch]

Well, motor is out and I think I found my problem, cracked case. Not only am I getting water in the oil, but I am also getting water coming out of the case. I guess a call to SBT for a new motor.

 

[CrankyGypsy]

that sucks.

I had a similar crack (but smaller) in one of mine, but it was only an exterior leak. I had a good aluminum welder put a bead on it with the case still assembled.

 

[cybuch]

I would do the same, but this started as just water in the oil and graduated to water coming out of the case as well. I am guessing it's much worse inside.

 

[buckbuck]

Wow, I wonder why that did not disintegrate?

 

[itsdgm]

Well, motor is out and I think I found my problem, cracked case. Not only am I getting water in the oil, but I am also getting water coming out of the case. I guess a call to SBT for a new motor.

Ouch. I agree with your assessment @cybuch that yours is probably split inside too. Does that crack correlate with the piston that has low psi?

Btw, that crack is almost in the same spot as mine.

 

[cybuch]

@itsdgm yes it sure does. @buckbuck , no idea why she didn't let loose. I am really wondering why it cracked.
So, since my core is bad I will be buying a new motor from SBT and keeping this one for spare parts. The head is still in great shape. Or maybe I will look for a case and rebuild this over the summer as a spare motor for my boat or my 2008 FXHO. Could be a good project to do with my 17 year old.

 

[itsdgm]

For what it's worth, I bought a good used replacement engine for under 2k and have it installed it in the boat last week. Then I found a good used freshwater case for $330 and I plan to rebuild my original engine with that block. Then I'll have a spare engine sitting in case this ever happens again.

I looked into the SBT engine option and talked it over with my mechanic. He said that every SBT engine that he's seen has had issues with the quality/tolerance of parts that they use in the rebuild. So I decided to go with a good used/low hour engine option instead.

Good luck with your decision, I hope it works out well for you.