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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › New OS 55 HZ , aluminum shavings
03-29-2010 02:54 PM  10 years ago
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Bouchah

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Willow Spring, N. Carolina USA

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New OS 55 HZ , aluminum shavings
I bought a new OS 55HZ engine to put in my new SDX Im building. When I removed the back cover to expose the crank case I noticed some grit on the inside of the cover when I removed it. Upon looking into the crank case, on the connecting rod there were small clumps of very fine aluminum pieces. The clumps were no bigger than the tip of a dull pencil tip and only a couple were visible to me. I tried to take pictures but my phone camera sucks so they are not real clear. Im not certain if there is more debris in other places in the engine.
The reason Im posting this is because I remember reading a thread about Hobby Service not honoring warrantys, It seems they try to blame any damage on something being sucked through the carb or fuel line. After seeing what I found inside my engine It makes me wonder what would happen upon firing the engine. Would it score the piston and sleeve? Would Hobby Service blame me for allowing foreign debris to get into the motor.

Has anyone else ever found foreign debris in the crankcase of a brand new engine? Can it be cleaned out, or is it normal and will blow out with the exhaust?
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03-29-2010 03:06 PM  10 years ago
Hamo

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Ireland

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It will probably just blow out with the exhaust.
Hamo
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03-29-2010 03:22 PM  10 years ago
Wingman77

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Pulaski Tennessee

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you should tear it down and clean all the metal shavings out, that can do horrible things to your engine.
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03-29-2010 03:22 PM  10 years ago
trekrider586

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Sylacauga,Al

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get a good camera,photo and document it.email it to HS.clean everything,I would also take the head off and have a look.after a good cleaning,break it in.If is tears up you have the photos and documentation where you emailed hobby service in the beginning.it's better to ask for forgiveness than for permission
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03-29-2010 03:25 PM  10 years ago
creightoncarr

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Missouri City, Texas - USA

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Definitely break it down and thoroughly clean it out. Chances of metal shavings, no matter how small, being blown out the exhaust without first causing some damage are slim.
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03-29-2010 03:27 PM  10 years ago
sinte

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Tacoma,WA

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if you're not in a hurry to install that engine, i would send it back right away untouched so they can see for themselves and send you a new motor. good job on inspecting the motor properly before installation!

jim
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03-29-2010 03:50 PM  10 years ago
RcNutTz

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Chicago Illinois USA

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shavings in a engine is never a good thing had a bearing go bad in my 383 stroker $10 part going bad is costing me $2700 for a rebuild

I would take it apart as mentioned above and look it over really good before installing it or just play it safe and rebuild it before you find out the hard way it might be bad

as for the warranty you have nothing to loose to give it a try
yes dear the hobby shop again
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03-29-2010 04:21 PM  10 years ago
Hamo

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Ireland

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I had an OS32, when the bearing started to break up shedding lots of metal parts, the only thing that got damaged was the glow plug.
My advice would be to wash it out with meths and fire it up.
Hamo
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03-29-2010 04:57 PM  10 years ago
alawel

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Springfield Oregon

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I've always torn engines down and flushed them with fuel. I don't always find metal shavings but I have several times. I've been told that the aluminum shavings are softer than the piston and liner metal so it won't hurt anything, but I still feel better about it not being in there on the first start up.

I don't totaly tear it down, typicaly just the backplate and head unless I find lots of stuff.
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03-29-2010 06:18 PM  10 years ago
Esprit Model

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Palm Bay, FL

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We started to clean motors with an Ultra Sonic Cleaner, you would be amazed what comes out of them!Esprit Model Support Crew
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03-29-2010 06:21 PM  10 years ago
Bouchah

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Willow Spring, N. Carolina USA

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I spoke with the LHS where I purchased it from, he is going to swap the motor out with a new one.
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03-29-2010 07:14 PM  10 years ago
Gearhead

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Vt

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geee, and OS and HS wonders why people are upset with them

as I have said before, any engine you buy you should tear it down and clean it well..
Jim
Buzz Buzz Buzz
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03-29-2010 08:58 PM  10 years ago
3kidzheli

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columbia, ms usa

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Had a hyper that blew a hole in top of piston, they trried to acuse me of pulling a screwdriver through the plug port to hold the piston as to tighten the clutching! I was a bit insulted seing as I own one of the tools specially made for doing that. Flush motor very good, honda has a brake and chain cleaner in a compressed can that is o ring safe and it work well for jetting out areas. Just run fresh fuel through it good before trying to start it. Good luck.There is no such thing as up, it's all out...
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03-29-2010 11:03 PM  10 years ago
RcRules

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Akron ohio Usa

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Thy who buys nitro engine and does not do a full tear down and cleaning.Becomes a very unhappy camper fast.You send in an engine with torn up cylinder walls or bearings they will send it back to and tell youu to use an air cleaner next time not there prob.Rich
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03-30-2010 01:12 AM  10 years ago
sinte

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Tacoma,WA

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Bouchah...that's cool that the lhs has your back. Hopefully the new motor is clean & ready to rock. I pulled my 55hz apart to inspect before install and it was clean as a whistle, so there is a chance of getting an os that was done right from the factory.

jim
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03-30-2010 01:17 AM  10 years ago
TMoore

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Cookeville, TN

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At the risk of repeating myself for about the 100th time; any new engine should be torn down and cleaned. At a minimum the head and backplate should come off. I don't care what factory built it.

TM
Part 107.
The only ZERO flight hour certificate in the world.
It's like getting a driver's license without the driver's test.
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03-30-2010 01:19 AM  10 years ago
Yug

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UK. Herts

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Just as one would reassemble any factory built item, the engine is no different. Assumpion is the mother of all funmentionables.Vegetable rights and Peace
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03-30-2010 01:35 AM  10 years ago
sinte

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Tacoma,WA

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TMoore...i was'nt suggesting that he NOT open up and inspect the new motor, i AGREE that they should ALWAYS be inspected. i was simply stating that upon inspecting my motor it was clean....so there is a chance of getting a motor from the factory WITHOUT crap in it! lol

good luck Bouchah

jim
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03-30-2010 02:17 AM  10 years ago
TMoore

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Cookeville, TN

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Jim, good point but I wasn't responding just to you but the thread in general. As you pointed out, it is a good idea to look inside to be sure. It is always a plus when you get a clean engine.

TM
Part 107.
The only ZERO flight hour certificate in the world.
It's like getting a driver's license without the driver's test.
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03-30-2010 12:53 PM  10 years ago
jschenck

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La Vista, NE.

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Had a hyper that blew a hole in top of piston, they trried to acuse me of pulling a screwdriver through the plug port to hold the piston
I don't know anyone who thinks those piston locking tools are a good idea. They *will* punch a hole in the top of your piston. Lock the engine at the crankshaft, never the piston with any method.
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