Geniune Engine (Sealed) VS Overhauled Engine

[asad_scorpio21]

Now i have come to the conclusion after reading some experts suggestions. Overhauling of engine is not bad option if properly done by Expert mechanic.
i am facing these problem for my daewoo's engine (G15) SOHC , though there is no smoke from silencer , no starting problem , still has good pick but eating mobiloil alot (as consumed 2 litre in just 1400 km ) , found collected carbon in silencer and engine become noisy like old deisal engine, so i am going to get overhauled in few days. Daewoo specialist (Mian Khan) gives me estimate Rs.15000-18000 , depend on work , 2 days required for this job.
so after overhauling i will share its difference.

[Xulfiqar]

As Storm said - if the builder is paying attention to his work considering tolerances etc. and the person assembling it cleans it and assembles it with proper tools and parts including sealants and then breaking them in properly.

Breaking in my style is 2nd gear pull at full load throttle to 90% allowable engine speed - then coasting back to no load speed, repeat 10 times - pull aside shut off wait for cool down, check fluids, start up repeat 5 times again, then drive back normally. This seats the rings like no -ones business..

If you baby the throttle with a new engine at no load - you will glaze out the cylinder walls before the rings actually seat into them.

The life of the engine depends on the driver actually, if you are torturing your engine - might as well send it to the junkyard now..

Ive rebuilt a number of engines - all have super super results..

[asad_scorpio21]

I just have taken over my daewoo from mechanic after
complete engine overhauling.
Work completed in 3 days.
Details:
Engine Foundation: 550/-
Silicon: 180/-
Kerosine oil , cloths, sand paper: Rs.600/-
Head valve : 900/-
Piston: 2600/-
Rings: 1800/-
Main Bigun: 1250/-
Jane Kit: 1850/-
Kharadia work(9 different jobs) : 4750/-
Labour Mechanic: 3500/-
Oil /Filter : 1525/-
Total : 19505/-
Now drive is very smooth with less engine noise ,
awesome pick , no vibration at all. and i am satisfied
with all work.

Note: car is 99 registered , but engine been opened/overhauled for first time

[Skill]

I just have taken over my daewoo from mechanic after
complete engine overhauling.
Work completed in 3 days.
Details:
Engine Foundation: 550/-
Silicon: 180/-
Kerosine oil , cloths, sand paper: Rs.600/-
Head valve : 900/-
Piston: 2600/-
Rings: 1800/-
Main Bigun: 1250/-
Jane Kit: 1850/-
Kharadia work(9 different jobs) : 4750/-
Labour Mechanic: 3500/-
Oil /Filter : 1525/-
Total : 19505/-
Now drive is very smooth with less engine noise ,
awesome pick , no vibration at all. and i am satisfied
with all work.

Note: car is 99 registered , but engine been opened/overhauled for first time

good luck asad!
Piston & valves sounds b catagory but if u r satisfied then its all right.

[asad_scorpio21]

good luck asad!
Piston & valves sounds b catagory but if u r satisfied then its all right.

thank bro
head valve is kabli but i think piston was best quality available , ya i am satisfied ,tommrow i will go for long drive almost 100 km , than will share its performance.

[Skill]

thank bro
head valve is kabli but i think piston was best quality available , ya i am satisfied ,tommrow i will go for long drive almost 100 km , than will share its performance.

yar i am estonished because there are no japanies piston available in this price,probably there is a brand RIGHT way which is of taiwan,its price is also around 3k.
Qabli valve might b of 1k but japanies valves are around 3~4k.
Any way b happy with the test long drive.

[asad_scorpio21]

yar i am estonished because there are no japanies piston available in this price,probably there is a brand RIGHT way which is of taiwan,its price is also around 3k.
Qabli valve might b of 1k but japanies valves are around 3~4k.
Any way b happy with the test long drive.

but i think its korean made piston (not confirmed)

[talharahim]

@For all those KHYBERIANS who have overhauled their engine around 20 k +

u can get a sealed engine from Sher shah @ around 30k

[asad_scorpio21]

@For all those KHYBERIANS who have overhauled their engine around 20 k +

u can get a sealed engine from Sher shah @ around 30k

If sealed engine with low mileage is available in 30k , that would be a good option.

[ahsanonline]

As Storm said - if the builder is paying attention to his work considering tolerances etc. and the person assembling it cleans it and assembles it with proper tools and parts including sealants and then breaking them in properly.

Breaking in my style is 2nd gear pull at full load throttle to 90% allowable engine speed - then coasting back to no load speed, repeat 10 times - pull aside shut off wait for cool down, check fluids, start up repeat 5 times again, then drive back normally. This seats the rings like no -ones business..

If you baby the throttle with a new engine at no load - you will glaze out the cylinder walls before the rings actually seat into them.

The life of the engine depends on the driver actually, if you are torturing your engine - might as well send it to the junkyard now..

Ive rebuilt a number of engines - all have super super results..

hey, having a newly built engine rev upto like 6-7000 rpm in 2nd gear with max load, isnt that actual suicide for the new parts?? i mean we're trying to break in the new stuff...not break it!
When they built my car's engine the mechanics kept it idling for a few hours. was that right?

Ure the experienced guy so plz do tell...

[osama96]

I have overhawled mu mehran egine because its starts drinking engine oil.
It cost me around 14000.
After overhawled engine performance incease and now i am enjoyng it with no trouble.

[spectra]

Been there done that

Got many overhaul experiences. Bottom line is that the person doing an overhaul or the owner shoul know the detaild specifications preferably from a repair manual. use genuine parts and in the end a good mechanic to put it all together.

you will get something as good as a so called sealed engine. be it a diesel or a petrol.

[asad_scorpio21]

Been there done that

Got many overhaul experiences. Bottom line is that the person doing an overhaul or the owner shoul know the detaild specifications preferably from a repair manual. use genuine parts and in the end a good mechanic to put it all together.

you will get something as good as a so called sealed engine. be it a diesel or a petrol.

I am satisfied with my recently Daewoo's overhauled engine , pick is good, smooth drive , but mehanic advice me to change first oil after 1000 KM ,
wats could be the technical reason behind it??

[spectra]

I am satisfied with my recently Daewoo's overhauled engine , pick is good, smooth drive , but mehanic advice me to change first oil after 1000 KM ,
wats could be the technical reason behind it??

This is for break in of new engine parts. many metal parts have rough edges or metal shavings. ALso during overhaul, some dust, kerosene oils etc. do enter the engine while assembling. first few oil changes early helps in getting these things mooth out and meshing all metal parts togther in a nice way.

if u inspect the oil u get out from car after first 1000 kms it will look like driven 5-8000 kms. try it

[asad_scorpio21]

This is for break in of new engine parts. many metal parts have rough edges or metal shavings. ALso during overhaul, some dust, kerosene oils etc. do enter the engine while assembling. first few oil changes early helps in getting these things mooth out and meshing all metal parts togther in a nice way.

if u inspect the oil u get out from car after first 1000 kms it will look like driven 5-8000 kms. try it

thanks sir for replying ,
so i may hoping more better engine performance after first oil change

[Skill]

hey, having a newly built engine rev upto like 6-7000 rpm in 2nd gear with max load, isnt that actual suicide for the new parts?? i mean we're trying to break in the new stuff...not break it!
When they built my car's engine the mechanics kept it idling for a few hours. was that right?

Ure the experienced guy so plz do tell...

yes this question is still answerable with details,i also have confusion.

[asad_scorpio21]

hey, having a newly built engine rev upto like 6-7000 rpm in 2nd gear with max load, isnt that actual suicide for the new parts?? i mean we're trying to break in the new stuff...not break it!
When they built my car's engine the mechanics kept it idling for a few hours. was that right?

Ure the experienced guy so plz do tell...

Mechanics recommend to keep engine idling for atleast 12 hours.

[Skill]

Mechanics recommend to keep engine idling for atleast 12 hours.

asad i am not concerned about initial idling but question is about "hard revs & loads vs baby throttle".

[ahsanonline]

asad i am not concerned about initial idling but question is about "hard revs & loads vs baby throttle".

exactly my point. i wanted to know what xulfi bhai would say about this...baby throttle (prolonged idling) vs. hard load and high revs

[spectra]

good break in requires use of full rpm range with variations. A break in with only baby throttles causes engine to form a pattern within and restricts full performace potential in ling run.