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Posted

almost completed the 500 mile service after the engine rebuild, i was totally shocked to find quite a few fasteners loose in engine bay, on the rebuild i treble checked everything for tightness cos im like that but ive just found both manifold bolts/nuts loose, rocker cover bolts loose, the alternator bracket had completely lost one of its m10 bolts and the other two were finger tight. :shock:

Posted

the manifold ones loosen because of expansion and contraction in the metals. the rocker cover ones settle due to the cork gasket. idealy the alternator bracket and engine mount bolts etc would have spring washers with them, to keep them from vibrating loose.

 

I found the same with mine after a total rebuild- i guess thats why its so important to follow the correct torques for the engine internals etc.

Posted

i had a vibrating under my car and found 3 of the 4 bolts that hold the gearbox to the bell housing had fell out one of them fooked of frew the bell housing :shock:

Posted

i had me k&n rattle loose on me twin choke upon inspection realisin that a bolt wos missin!hunted around cudnt find it ad a quik look down the carb and there it was caught in the choke butterflies!!! lucky or what?

Posted
i had me k&n rattle loose on me twin choke upon inspection realisin that a bolt wos missin!hunted around cudnt find it ad a quik look down the carb and there it was caught in the choke butterflies!!! lucky or what?

 

i had that too but mine fell in there and jammed the betterflys open and the throttle on :P was interesting

Posted

biggest reason for nuts and bolts coming undone ..... ???

 

huge blokes hanging off huge ratchets and spanners over tightning everything .

 

A bolt has a self tightening elasticity ... by over tightening them your lose this..and it rattles loose.

 

check your Haynes manuals and look at the torque settings

Posted

i do mate, in fact my mates take the piss outta me for using the torque wrench on everything lol, im putting it down to the stainless spring washers, i remember reading somewhere that they dont have the same spring tension as mild steel ones, ive also locktightened the major fasteners so il check again in a hundred miles or so :thumbsup:

Posted
Haha know what you mean, on my old escort the starter motor fell out :shock:

 

yep, the racket at 80 plus is untrue

Posted
biggest reason for nuts and bolts coming undone ..... ???

 

huge blokes hanging off huge ratchets and spanners over tightning everything .

 

A bolt has a self tightening elasticity ... by over tightening them your lose this..and it rattles loose.

 

check your Haynes manuals and look at the torque settings

 

Enough said.

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