y does engine bearing worn out?

gti[GSR]

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gti[GSR]

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can anyone explain? y?

as i noe its due to :
1) oil pump (faulty)
2) insufficienet engine oil

wat other causes??? anyone noes?
 

jinkl

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jinkl

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u r right ,
but its meant to worn out ler , thts y must keep changing mar
 

softmuffin

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softmuffin

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sorry to ask,
what is this ? what will happen if it is faulty?
jinkl said:
u r right ,
but its meant to worn out ler , thts y must keep changing mar
 

jinkl

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jinkl

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softmuffin : offer some muffin ler wei , hungry man hehehe

erm if bearings get eaten up :) then u can see ur engine getting eaten up :P
maybe conrod or crankshaft if in block ler
thts the reason they put the wear n tear in the engine. instead of the engine wearing , u let the bearings wear n change em
 

cypress8

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cypress8

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jinkl said:
softmuffin : offer some muffin ler wei , hungry man hehehe

erm if bearings get eaten up :) then u can see ur engine getting eaten up :P
maybe conrod or crankshaft if in block ler
thts the reason they put the wear n tear in the engine. instead of the engine wearing , u let the bearings wear n change em
Roger that Sir Jinkl!
 

gti[GSR]

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gti[GSR]

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but dis kinda bearings suppose to last few thousands of KMs man... like at least more den 100k KM rite?

if keep changing man everyone wud need to open up their engine all da time...

dere mus b a reason y dey wear n tear so much in sucha short time?
 

badguy

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badguy

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actually where is the location of the engine bearing??
i also noob lah!
how the engine been eaten up?
my car 140K already how to check the bearing eaten up or not?
 

phantomRX8

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phantomRX8

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well..there are a lot of possibilities but the most probably is because the overload on the bearings...things like detonation or engine knocking are the prime suspect for premature engine bearing worn out...bearing on the engine r made to withstand vertical load and some side load...simple things like letting go the clutch pedal harshly can shift the crankshaft sideways at a small margin laa...but can still damage the bearing in the long run...i had this friend who used mivec pistons inside a 1.8 mivec and engine knocked so badly when he open the engine,not only the bearing worn out but the con rod also went missing...only traces of metal particles in the oil sump..so try rectify the knocking problem..u might not hear the knocking but when there is crank harmonics..premature wearing might happen...just my opinion..hehe
 

phantomRX8

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badguy said:
actually where is the location of the engine bearing??
i also noob lah!
how the engine been eaten up?
my car 140K already how to check the bearing eaten up or not?
bro..i think laa if u want to check whether the bearing is eaten up or not...maybe u can check the condition of the oil the next time u change the motor oil...try check for small metal particles within the oil...or do oil spectrometer test hehe..
 

gti[GSR]

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gti[GSR]

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due to engine knockin? hmm if engine knockin isnt dat due to insufficient fuelling?

i tot engine bearings worn are due to engien oil n not FUEL? /??? wat do u mean???
 

anfernee

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anfernee

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Engine bearing worn out... could be frequent over-revving of the engine ? If stock ECU then can't over-rev but those that have the RPM cut removed.. or carburetor engines...
 

phantomRX8

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gti[GSR] said:
due to engine knockin? hmm if engine knockin isnt dat due to insufficient fuelling?

i tot engine bearings worn are due to engien oil n not FUEL? /??? wat do u mean???

yup...well the basics of lubrication engineering is that the oil must provide lubricating

properties and oso shock absorbing properties..there are a lot more properties that the

engine oil must have but this is the important one laa hehe...then when there are crank

harmonics or vibrations which can come from any rotating or moving parts in the engine

the bearing will absorb the vibration and spread it over the surface of the bearing..oil on

the other hand provide sufficient lubrication and absorb the shock oso..so when there is

engine knocking or detonation due to the insufficient fueling..the harsh vibration from

piston crown will be transmitted to the crank via the con rod..if its too severe the bearing

will not be able to spread the kinetic energy of the vibration and the oil in-between the

bearing and the crankshaft journal would be displaced..then there would be metal-to-metal

contact..hehe...this is where the bearing would start to worn out until it is decimated..

insufficient oiling maybe the culprit but looking at the quality of today's automotive

engineering the oiling capacity of the oil pump shud not be a problem if only it is

in gud working condition...so if wanna go racing must upgrade maa..anyway this is one

of da probable cause laa..hehe..feel free to correct me if im wrong..we all learning

what..hehe..
 
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zakie

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zakie

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u wanna noe y arr??
very easy one loorr...
bearing worn out.... hehehheheee...
lu rembat x ingat rosak...
dah rosak baru mau ingat rosak...
haiyaa..... lagi mau tanya.....
tak mau rosak simpan dlm garage....
gerenti x rosak....100%...
jgn marah aaaa.....
:dancing2:

u have 2 remember one thing arr....
once the rpm hit 7000 above....
sure it will effect u'r bearing loorrr....
and it depends on wat purpose u using ur
car 4...... :dancing2:
 

gti[GSR]

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gti[GSR]

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wellz dere mite b a reason frequency of it kept repeating...? mahf wen'sc ar he changed block like 3 times n dis tiem comin 2 fourth...

y? wellz from wat i read so far, its da insufficient fuelling....
 

phantomRX8

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phantomRX8

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gti[GSR] said:
wellz dere mite b a reason frequency of it kept repeating...? mahf wen'sc ar he changed block like 3 times n dis tiem comin 2 fourth...

y? wellz from wat i read so far, its da insufficient fuelling....
wah..comin' to 4th engine block?? wat happened there? must b sumtin' wrong wit

injector/ecu/regulator/filter or anything to do wit fueling itself if insufficient fueling is

concerned..gud luck to him
 
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jinkl

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jinkl

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phantomrx8 : hehehhe

gti[gsr] : i also had 2 engines died cos of bearing worn out , one totally blew pecah habis , one gave way to the crank making grinding noise

my problem both were OIL PUMP failure , if u r on 6 bolts 63t then its already common to have crankwall problems, best u go get ur oil pump UPRATED
 

phantomRX8

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phantomRX8

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so jinkl bro...u like to take ur crankshaft for a walk is it?? hehe..crank walking is a common

problem for 63T laa...c da effects of crank harmonics?? vibrate all the way to the oil

pump..bro gti how about changing to evo 3 oil pump ?? maybe its rated capacity higher than

vr4 one...just a hunch anyway...