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-   -   i have a serious question.... (https://www.racingjunk.com/forums/showthread.php?t=23405)

bowhay 03-11-2009 07:17 PM

well its only a 4 day old motor
and there was a lil bit of fine metal dust but thats justfrom the bearings breakin in

bowhay 03-14-2009 02:45 PM

got the motor back in today
and apparently it was the pump that was causin the knock
cus it sure aint doin it no more
thanks to everyone that gave input on what they thought it was

TheYellaBrick 03-14-2009 05:48 PM


Originally Posted by bowhay
well its only a 4 day old motor
and there was a lil bit of fine metal dust but thats justfrom the bearings breakin in

uuuhhh...bearings don't 'break in' ,...they wear out....and start knockin'...

Any groovy grooves in the oil pump cap ? That might be the source of the metal 'dust'.

bowhay 03-14-2009 08:04 PM

bearings wear in to each particular journal
which will leave very very fine metal particles
thats why if u dissasemble a motor u have to keep them matched if they arent being replaced
otherwise they will catch and spin
but the knocking stoped by fixing the pump so it doesnt matter anyway

Tod74 03-14-2009 10:00 PM


Originally Posted by DrivingMissDD

Originally Posted by bowhay
well its only a 4 day old motor
and there was a lil bit of fine metal dust but thats justfrom the bearings breakin in

uuuhhh...bearings don't 'break in' ,...they wear out....and start knockin'...

Any groovy grooves in the oil pump cap ? That might be the source of the metal 'dust'.


I think he was refering to the silver look you always have in the oil of a new engine.


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