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

Heve you got a vid of you giving it some revs mate?
To me that doesn't sound like knock.Just tappety.



Danny.

hi danny,havnt got the video yet.but will make one and post it soon...hope its the tapplets or belt tensioner..

doesnt sound bottom end..... phew

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.

mechanic checked the crank,he said it was ok. Version 4 head,they have solid lifters or hydraulic?

STI solid WRX hydraulic.

thanks,now if ever when assembling the engine,and the shims got exchanged,can it cause this sound?

Yes - did you not check the valve clearances ??

Mick

hi mick!
well havent yet checked the clearence,but going to check it now.

Always change the crank mate for piece of mind.

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:lol1:

That would look good going through the X-ray machine!:wonder:

JohnD

Also bare in mind it may also take some out of the rod causing excessive clearance. Shells rarely fix a knocking big end.

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!

:facepalm2: