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4G13 replace engine or overhaul


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#1
vernond

Posted 12 May 2007 - 12:54 AM

vernond

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The foreman suggested I replaced the engine, but I'm not for it since I
would not know the state of the second hand engine.

Currently my engine is consuming engine oil and there are traces of white
smoke once in a while.

Anyone replaced their 4G13 pistons to an oversized version and rebore the
engine block before? What was the outcome?

Thanks for sharing.

#2
maddriver

Posted 12 May 2007 - 07:55 AM

maddriver

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i would prefer an overhaul over a change of block anytime! if done
properly, the car will last another 200k km, just like my own car. with
the engine kosong, it's very hard to tell the condition of the engine in
the first place, getting one is like a lucky dip, u know what i mean. on
the other hand, not many mechanics still know how to do a proper engine
overhaul, the art is almost lost due to many mechanics like yours who
immediately tells you to get an engine kosong.............so sad:-(

#3
yamahaFC

Posted 12 May 2007 - 11:56 PM

yamahaFC

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4G13 & 4G15 has the same stroke, so can use 4G15 piston & block.
Basically, can upgrade your engine to 1.5 without need to go to JPJ
inspection. However need to find workshop that can.

#4
hifi

Posted 14 May 2007 - 10:25 AM

hifi

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if ur engine already 200,000km mileage, i would find another engine
kosong at chop shop for 50,000 km mileage.. then ur engine will feel
new...

#5
Freedom

Posted 14 May 2007 - 09:41 PM

Freedom

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suggest to just overhaul ur engine and do port and polish....

#6
maddriver

Posted 14 May 2007 - 10:41 PM

maddriver

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if the guy who did the overhaul were to take the time to clean the ports
and valves of the cylinder head properly, then no need for port & polish
and u will still feel the difference. all u need to do is to balance the
engine and do a lower bearing selection, u will feel the car revving so
smooth u won't believe that that was your car.

#7
fkmfkm

Posted 17 May 2007 - 01:27 PM

fkmfkm

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this balancing needs special machine ? how long will it take ?

#8
maddriver

Posted 17 May 2007 - 06:06 PM

maddriver

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first, the engine needs to be stripped. then we take the clutch kit,
flywheel, crank, conrods, pistons and outer pulley to one of my friends,
who does the balancing. u have the option, at this point, to lighten too,
but i'll advise against it as we're talking about road cars here. off-
race season, the balancing process can be done in a day or two. but don't
try to do this when merdeka race is near, as this guy is fully booked
then.

#9
cucuk

Posted 18 May 2007 - 11:21 AM

cucuk

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maddriver, i pm u, u got receive my pm?

what are the things to be changed in an overhaul beside the piston ring
or valve seal?

#10
maddriver

Posted 19 May 2007 - 12:34 AM

maddriver

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did not recieve the pm. u can e-mail me at maddriversgarage@hotmail.com.

overhaul? all the bearings, oil seals, o rings, pistons (optional, unless
u need to rebore the cylinder) overhaul gasket set.

also best to change the timing and all other belts, water pump, clutch
pump(if damaged) and the clutch set (engine already on the ground, so
might as well change, no additional labour cost).

u will also need to replace all fluids & oils.