Engine Swap vs Overhaul

[kulugo]

was just informed that my 92 glxi lancer (singkit) needs to be overhauled or replace the engine...
the "trusty" neighborhood mechanic suggests for an overhaul since u know the history of the engine and since most surplus engines only give 1 month gaurantee...
i'm on a tight budget ( obviously old school na nga tsikot ko e! ;) ) and would really appreciate inputs on how to go about this...

tnx in advance!

[yebo]

kung tiwala ka sa mechanic na gagawa, mas ok ang overhaul. for one thing, a well performed overhaul gives you a good as new engine. new piston rings (and maybe even new pistons), new liners, new connecting rod and main bearings, new head gasket, new shaft seals, new valves and seats, new valve guides, new valve stem seals, new cam bushings/bearings, new water pump, new oil pump, new fuel pump. magastos, pero worth it. may added cost pa yan ng machining of cylinder head and block, and even crankshaft if it is worn already.

pero if you are on a tight budget you can always forego of the water pump, oil pump and fuel pump. pwede na yun i-overhaul or palitan when you get the money na.

although a replacement engine is cheaper, remember that a surplus engine is a used, as-is engine. you don't really know what you buy until you turn the starter key.

[extinction]

sir tingin ko mas maganda atang ipa overhaul mo na lang, kasi makakapili ka pa ng parts na bibilhin mo pwedeng orig/japan replacement pero huwag kung taiwan parts kasi hindi rin gaanong magtatagal.


pero kung may kakilala kang nagbebenta ng surplus parts na alam mo namang hindi ka lolokohin eh go for it! mas simple nga lang yun kaso nga lang maglalakad ka pa ng papers sa LTO for change engine.

=)

[ricky]

I suggest you go for the overhual. Mas tatagal yung engine. Mas mura sya in the long run.

[squala]

You can consider the swap if you plan to put a more powerful engine. Yun nga lang, the replacement motor may also need an overhaul.

If you just want your car to run like usual, overhaul is the best thing to do. Have a reliable mechanic do it as well.

[niky]

yup, unless you go EVO or MIVEC, just overhaul. And even when you're swapping to a better motor, you're going to be spending a lot of money after the swap tuning/fixing... and sometimes rebuilding the new motor...

[notEworthy27]

overhaul parin. swap only if your going for mivec or evo. I agree with niky :D

[SunTzu]

If you want to increase your car's power significantly, better opt for a surplus engine. But mind you, changing engine is like russian roulette. You can go for 4g63, 4g63T, 4g61T

If you just want a daily driver car. i strongly suggest to just overhaul your existing engine.

we have the same car. I slapped a 4g63 in it.

[luckytruck]

i vote for engine swap to 4g63T. but that's because i like fast cars. kung contento ka na sa performance, then overhaul is the way to go.

andy

[jim]

overhaul!!!

[Kicker15]

overhaul na lang. specially pag pang daily use mo yung car.

[kulugo]

tnx for the inputs peeps!
overhaul it is!
man its gonna be awhile since i'll be getting my car... sniff
daily commute muna... huhuhu

[dangerboi]

I have a 3dr Gen1 Pajero with 4G54 engine due for overhaul (oil leaks all over plus a little smoke, cant see what color but the odor is bad).

Tinitignan ko kasi yung service manual nung engine ko and ang daming special tools and standard values na dapat sundin (e.g. valve stem-to-guide clearance: intake=0.03 to 0.06mm)

I was thinking na hindi naman magagawa yan ng friendly neighborhood mechanic, sungkit at pukpok lang lang gagawin in replacement for special tools and silip and tancha lang para sa standard values. Kaya baka hindi rin optimum performance kalabasan after the overhaul...

I was thinking if i will buy a 4D56TDIC to swap... any suggestions?

[recklus]

overhaul na lang siguro, for me its a lot easier to find new parts for your engine compared to searching for an engine in good condition

[4JGtootsie]

I have a 3dr Gen1 Pajero with 4G54 engine due for overhaul (oil leaks all over plus a little smoke, cant see what color but the odor is bad).

Tinitignan ko kasi yung service manual nung engine ko and ang daming special tools and standard values na dapat sundin (e.g. valve stem-to-guide clearance: intake=0.03 to 0.06mm)

I was thinking na hindi naman magagawa yan ng friendly neighborhood mechanic, sungkit at pukpok lang lang gagawin in replacement for special tools and silip and tancha lang para sa standard values. Kaya baka hindi rin optimum performance kalabasan after the overhaul...

I was thinking if i will buy a 4D56TDIC to swap... any suggestions?

Gas to diesel tama ba?
4D56TDIC is a good engine. Sagana sa parts especially the local engines.
Kung bubuksan mo rin yung engine palitan mo na lahat ng wear and tear parts inside the engine (engine Block). The crucial thing to measure is the oil clearance of the main, journal, thrust bearings with the use of a plastigage, double check oil pump and passages and oil jets.

[umzzzzz]

Yip, overhaul din for me...at least you know where the new parts came from.

Overhaul... how much does it cost if let's say you'd replace all including the repair of a cracked cylinder head?

[4JGtootsie]

Really depends on the size and location of the crack.
What i do is devide the overhaul in two. First is Cylinder Head Overhaul or Top Overhaul palit valves, guides and seats. Madalas mauuna mag loss compression dito. Mas maaga bumibigay ang head.

The second (few months or even years later) the block overhaul palit piston rings, all bearings, all bushings, oil seals, gaskets, liners and sometimes piston pin. The reason for the division is the down time and the enormous cost of machine shop, parts and labor. In my opinion by this time the valves have seated and the guides and necks of valves have have settled. Less heat for the engine while breaking in.

I just overhauled and this is how i did it. I just set aside the cylinder head while concentrating on the block. Before assembly just clean all cooked oil on the exhaust and intake passage and the valves itself.

[dangerboi]

Thanks for the replies, and sorry for hijacking the thread.

Sabi ng mechanic, kahit top overhaul lang daw muna para mawala ang smoke.

Iniisip ko lang, alin ba mas maganda unahin, pa clean/overhaul ang carb or pa top overhaul?

Kasi pag carb muna, hindi dun sa neighborhood mechanic ko papagawa, and I do not know how much it will cost. Any inputs mga experts?

[calcite]

If you want carb overhaul, go to kamuning district in QC, madami duon carb shops, mura lang overhaul (I paid P500 for labor about one and a half years ago). Dali lang iyon, it will only a few hours. Just buy the carb overhaul kit that they tell you. Don't try to overhaul the carb yourself since dami iyon small parts which can get lost. Leave it to the experts.

I suggest you do the carb overhaul and engine overhaul to fix everything. Hirap naman if after overhauling your engine it doesn't run well because of worn or dirty carbs.

And considering the age of your engine, I suggest you do the full engine overhaul - baba ang engine. That way you just spend once on the overhauling gasket set and labor. Mahal din ang gasket set and labor.

If the cylinder clearance is already big, install cylinder liners to put the bores back to standard clearance - you may not have to replace the pistons if they are not worn.

Also replace all the valves, valve guides, valve springs, valve seats, bearings, etc. After that your engine is as good as new. And get a good machine shop to do the machining. Expect to spend P5T+ for the machine shop alone - machine the heads, crankshaft, and the block. You probably wont have to replace the oil pump, it hardly gets worn out.

I've done several overhauls before and the results are always good as long as you don't skimp too much on parts and machining. Remember the motto - do it right the first time and you'll have an engine good for another 100,000km or more.

[LexTer]

was just informed that my 92 glxi lancer (singkit) needs to be overhauled or replace the engine...
the "trusty" neighborhood mechanic suggests for an overhaul since u know the history of the engine and since most surplus engines only give 1 month gaurantee...
i'm on a tight budget ( obviously old school na nga tsikot ko e! ;) ) and would really appreciate inputs on how to go about this...

tnx in advance!

mas OK overhaul basta magaling mekaniko sir. kung papalit ka makina at surplus naman e luma pa din yan.