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Engine Rebuilt from rod knock:still knocking,identify sound..

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Old 01 February 2012, 01:09 AM
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krish51287
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Default Engine Rebuilt from rod knock:still knocking,identify sound..

hi everyone, i just rebuilt my engine from rod bearing knock.change all bearings.today started the car, and it got another knock sound.below is a video,help me identify the sound.
regards
http://www.youtube.com/watch?v=X2L5C...layer_embedded
Old 01 February 2012, 01:14 AM
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Mr moff
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Heve you got a vid of you giving it some revs mate?
To me that doesn't sound like knock.Just tappety.



Danny.
Old 01 February 2012, 01:21 AM
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krish51287
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hi danny,havnt got the video yet.but will make one and post it soon...hope its the tapplets or belt tensioner..
Old 01 February 2012, 01:29 AM
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craigo
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doesnt sound bottom end..... phew
Old 01 February 2012, 10:18 AM
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WMS
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When you say you have changed the bearings, did you check the crank was ok? 99.9% of the time when you get a big end fail it takes the crank out with it, along with the rod.
Old 01 February 2012, 11:36 AM
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mechanic checked the crank,he said it was ok. Version 4 head,they have solid lifters or hydraulic?
Old 01 February 2012, 01:48 PM
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RICHARD J
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STI solid WRX hydraulic.
Old 01 February 2012, 02:31 PM
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thanks,now if ever when assembling the engine,and the shims got exchanged,can it cause this sound?
Old 01 February 2012, 05:25 PM
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merlin24
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Yes - did you not check the valve clearances ??

Mick
Old 01 February 2012, 05:42 PM
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krish51287
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hi mick!
well havent yet checked the clearence,but going to check it now.
Old 01 February 2012, 07:20 PM
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L.J.F
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Always change the crank mate for piece of mind.
Old 02 February 2012, 01:52 AM
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krish51287
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hi m8,here in mauritius,cranks are not available. you have to buy a whole engine for it,and its not cheap here. well crank was inspected,was ok.will start checking timing belt,then remove the engine to strip..
Old 02 February 2012, 08:56 AM
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spender(again)
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Originally Posted by krish51287
hi m8,here in mauritius,cranks are not available. you have to buy a whole engine for it,and its not cheap here. well crank was inspected,was ok.will start checking timing belt,then remove the engine to strip..
Buy a crank and pay for my flight and I'll bring it over in my hand luggage
Old 02 February 2012, 10:42 AM
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JohnD
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Originally Posted by spender(again)
Buy a crank and pay for my flight and I'll bring it over in my hand luggage
That would look good going through the X-ray machine!

JohnD
Old 02 February 2012, 11:06 AM
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RICHARD J
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Also bare in mind it may also take some out of the rod causing excessive clearance. Shells rarely fix a knocking big end.
Old 03 February 2012, 04:37 PM
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hi everyone,so stripped the engine today:
result: Piston were slightly hitting the head due to too thin layer gasket(0.75mm)
Now changing to 1.5mm.Nearly unbelievable!
Old 03 February 2012, 05:04 PM
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Old 03 February 2012, 05:47 PM
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