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Myvi Use Timing Chain!


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#11
cre8tif

Posted 30 May 2005 - 01:15 AM

cre8tif

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ktsk88
Original Post: Well, what a back-date tech they're using. Nowadays, new
cars are using timing belt same like those fan belt but with gigi. The belt
is better in the sense that if it breaks it won't harm or break any parts
or components around it thus reducing the costlier repairs. are you sure
the Beemer and Merces still using timing belt?. If you says that Jap cars
likes Toyo or Hondi and Polotong, Kie or others I do believe but not Beemer
or Merces lah.

*********

Who says ???

If the belt/chain breaks and the piston hantam the valve train, the most
likely cause of action would be to replace valve stems and other damage
parts like Piston, but in all likelihood, most lkely a rebore engine also
cannot because it happen to my dad's old 728i before, the whole engine kena
throw because the scrapnels/serpihan besi from the valve has *scatched* the
entire bore of the engine so there is no way it can be repaired ...

#12
theanky

Posted 30 May 2005 - 09:42 AM

theanky

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Who says ???

If the belt/chain breaks and the piston hantam the valve train, the most
likely cause of action would be to replace valve stems and other damage
parts like Piston, but in all likelihood, most lkely a rebore engine also
cannot because it happen to my dad's old 728i before, the whole engine
kena
throw because the scrapnels/serpihan besi from the valve has *scatched*
the
entire bore of the engine so there is no way it can be repaired ...


******************************************************************

Nowadays modern engines like DVVT or VVTi use bore jacket. If the inner
bore surface happen to be scratched, just change the bore jacket, no need
to change the whole engine block.



#13
mtuc2003

Posted 30 May 2005 - 11:31 AM

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You means...the bore jacket is the liner that can be replaced!If that
so...its would save alot of money and hassle to look for another engine.

#14
cspikes

Posted 30 May 2005 - 04:08 PM

cspikes

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this pic copy from perodua websites

#15
theanky

Posted 31 May 2005 - 09:34 AM

theanky

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You means...the bore jacket is the liner that can be replaced!If that
so...its would save alot of money and hassle to look for another engine

**********************************************************************

Yeah, some sort like a metal cylinder that fitted in the engine block. In
this case, the piston is in contact with this cylinder and not the engine
block.

#16
cucuk

Posted 31 May 2005 - 01:15 PM

cucuk

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timing belt or chain no big deal ler, some cars are using timing gear,
more durable

#17
mtuc2003

Posted 31 May 2005 - 06:33 PM

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Yes timing gear are more durable thus has more moving parts and increase
the engine weight also.But not easily availabe in msia, maybe on heavy
machineries(high speed generator 250KW above) and some antic cars.Timing
gears are do have back lash(clearance between the gear teeth),if your
lubrication is poor or lazy to change oil,the clearance will increase on
years to come thus you will experince lower engine performance and noisy
gearing.

You can still see on the road..Toyota Corolla,Datsun 120Y...these cars are
using timing chain...hell of along years of service.If,with timing chain
you are troble free for at least 10 years..should be good enough as very
rare you find people that using their cars for more than 30 years.




#18
T0yotA

Posted 31 May 2005 - 07:00 PM

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but as i can see the myvi is using Self Ajustable not the Auto
Ajustable. which mean its cant strecth it self to suit the lenght after
some times when it start to get lossen.

for the Auto Ajustable ones its got a so called "Absorber" which can
strecth automatically. while for the Self Ajustable we got to see when
there is an alternative to ajust it conviniently. hopefully it for a hole
for the casing which enables to ajust it easily or else have to open uf
the whole thing :)

#19
cre8tif

Posted 01 June 2005 - 09:22 AM

cre8tif

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to T0totA,

simple lor Big Smile by the time the chain loosens, it means its time to change
the timing chain plus recalibarate the ECU lor ...

timing chain quite lasting ...