Some time ago the egine developed a ticking noise, which over time, become very loud first thought, some problem in the egine, - conrod, or piston pin. After a closer look ...
how the... was this possible ?
how the... was this possible ?
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What car is that from? it's not a 20v turbo front pulley it doesn't have enough material on it.
Was it taken from a different Audi car? -
its an AAN,i have seen this before on a knackered engine.Comment
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vcosmin,is the end of the crank still ok?keyway damaged?Comment
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It is from an audi s4 - aan , the engine works no problem, the cog, is new, (3000-4000km), from 034motorsport, and the pulley is stock aan, code 054 105 255 A , i ordered all new parts, but i dont know how could this happened ? my mechanic sad, that everything was torqued to specification
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Two possible scenarios.
Either bolts were loose, because of being too long, and the thread went to end even the damper was not properly tightened, IOW someone made the bolts out of longer ones that didn't have long enough threaded part.
Or the damper itself broke internally, and started to vibrate. In this case the rubber inside the damper has ruptured.
In any case, check the bearings, as most likely You will have axial direction wear marks on them. Replace if so.Everything less than 2 bar is considered to be naturally aspiratedComment
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