Failed small end bearing

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Lee24V
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Failed small end bearing

Post by Lee24V » Sun Jun 17, 2018 9:18 pm

Spoken to 3 mechanics today and the diagnosis is a small end bearing thats gone.

Anybody have any advice for changing these who have done it before ?
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Lee24V
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Re: Failed small end bearing

Post by Lee24V » Fri Jun 29, 2018 5:02 pm

Never mind, turns out the big end bearing has spun for some reason and the engine is officially knackered ๐Ÿ™.
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Placid Probe
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Re: Failed small end bearing

Post by Placid Probe » Fri Jun 29, 2018 6:09 pm

Sorry to hear this.

Are you going to fix it?

How many miles had the engine done?
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Lee24V
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Re: Failed small end bearing

Post by Lee24V » Fri Jun 29, 2018 7:01 pm

Well i rebuilt the engine meticulously last year, didnt replace the shells but somethings gone wrong somewhere, its done 114k and 4k since rebuild. Just deciding how to go ahead with it tbh
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EL PLATES
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Re: Failed small end bearing

Post by EL PLATES » Fri Jun 29, 2018 7:04 pm

oh dear, sorry to hear....

dont even know what parts you are talking about.

all the best

hope you are able to get things sorted...

:wave: :wave: :wave: :wave:

Lee24V
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Re: Failed small end bearing

Post by Lee24V » Sat Jun 30, 2018 8:43 am

Thanks, i am going to check what damage has been done today and see what i need to do to sort it
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Kit
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Re: Failed small end bearing

Post by Kit » Tue Jul 03, 2018 8:06 pm

EL PLATES wrote: โ†‘
Fri Jun 29, 2018 7:04 pm
oh dear, sorry to hear....

dont even know what parts you are talking about.

all the best

hope you are able to get things sorted...

:wave: :wave: :wave: :wave:
There the bits either end of the conrods, any wiser now, :rolleyes: :rolleyes: ](*,)

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EL PLATES
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Re: Failed small end bearing

Post by EL PLATES » Wed Jul 04, 2018 12:44 am

cheeky bugger ......
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Lee24V
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Re: Failed small end bearing

Post by Lee24V » Wed Jul 04, 2018 12:45 pm

Well i have had my micrometer on the crankshaft and it seems the damage was just to the shells, so going to try those and see how it goes ๐Ÿคž
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flex
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Re: Failed small end bearing

Post by flex » Wed Jul 04, 2018 12:59 pm

Fingers crossed for you mate.
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Andy W
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Re: Failed small end bearing

Post by Andy W » Thu Jul 05, 2018 3:09 pm

Good luck Lee
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jrh
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Re: Failed small end bearing

Post by jrh » Thu Jul 05, 2018 5:21 pm

Make sure you haven't 'lost' any flakes of bearing material .
If you cannot account for every 'lost' piece it will be 'in the system ' having avoided the filter.
I needn't describe what will happen next.

Lee24V
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Re: Failed small end bearing

Post by Lee24V » Thu Jul 05, 2018 5:37 pm

Yeah i have got all the bits and i have cleaned the sump.

Just waiting on the shells now.
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Re: Failed small end bearing

Post by jrh » Thu Jul 05, 2018 7:32 pm

Next , try to figure out why that bearing failed.
Make sure you turn that engine over by hand , NOT the starter motor , and really 'feel' if there is any sign of tightness or obstruction when that
cylinder passes over TDC.
Good luck.

Lee24V
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Re: Failed small end bearing

Post by Lee24V » Thu Jul 05, 2018 9:48 pm

I have had a thorough check and nothing found yet. Me and few other mechanics think its oil starvation to that bearing. I have checked the oil channels and theyre clear. Something has made the bearings grab, break the tabs then spin.
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jrh
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Re: Failed small end bearing

Post by jrh » Fri Jul 06, 2018 12:27 pm

From the Ford book, standard con rod bearing clearance is 0.023mm to 0.043mm.
Maximum clearance 0.08mm.
Check with plastigauge or similar.
Cross your fingers.

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Re: Failed small end bearing

Post by humph » Tue Jul 10, 2018 4:19 pm

I always use assembly lube on all bearing when reassembling an engine.
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Lee24V
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Re: Failed small end bearing

Post by Lee24V » Thu Jul 12, 2018 9:34 am

Well, as i suspected, the spun bearing has created wear on the crankshaft, so engine out time Again ๐Ÿ˜” and swap the complete block for the spare i have.
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