buy engine or overhauling??

[arvy]

last month nagpa top overhaul ako my ride is nissan lec palit kami timing chain,tensioner,valve seal,piston ring,cylinder head gasket tska change oil narin.1month na nakaraan.wla paring pinagbago lalo pang lumala imagine usok lang pinagagawa ko pati spark plug ko nalintikan na. kasi palaging pundido yung plugs ko simula na top overhaul.nakaka 3sets nako ng palit ng plugs ko tapos pag tinatangal ko yung spark plug ko sobrang carbon and oily.humingi ako 2nd opinion sa ibang mekaniko sabi baklasin uli yung head tapos ipa machine shop para malaman kung reborin na.naisip ko doble gastos nanaman.since my nakita ako sa sulit na buy&sell benibentang ga14 na engine 10k asking price nya w/papers bkt hindi nalang kya ako bumili ng surplus na makina?pls advise po kung ano dapat ko gawin????

[Horsepower]

Kung ganun, bili ka na lang ng makina.

[jvnj]

last month nagpa top overhaul ako my ride is nissan lec palit kami timing chain,tensioner,valve seal,piston ring,cylinder head gasket tska change oil narin.1month na nakaraan.wla paring pinagbago lalo pang lumala imagine usok lang pinagagawa ko pati spark plug ko nalintikan na. kasi palaging pundido yung plugs ko simula na top overhaul.nakaka 3sets nako ng palit ng plugs ko tapos pag tinatangal ko yung spark plug ko sobrang carbon and oily.humingi ako 2nd opinion sa ibang mekaniko sabi baklasin uli yung head tapos ipa machine shop para malaman kung reborin na.naisip ko doble gastos nanaman.since my nakita ako sa sulit na buy&sell benibentang ga14 na engine 10k asking price nya w/papers bkt hindi nalang kya ako bumili ng surplus na makina?pls advise po kung ano dapat ko gawin????

Hi, I would personnally go for the overhaul. Buying a second hand engine would be easy coz you can immediately install it. But there are many things to consider in buying a second hand engine:

1. You need to change your engine number as indicated in your registration. This includes Crame or Police clearance. Additional costs involved.
2. You are not so sure if the engine you will buy will lasts or performs in tiptop condition. You gotta be sure of the engine's history or how the owner uses it.
3. You may want to consider why did the owner wants to sells his engine, does it give him a headache? etc.
4. You also need to perform basic maintenance (ex. change oil, tune up, etc.) on the engine before you use it.

I think, your mechanic wasn't able to repair the exact cause or problem of your engine, or, he did not carefully followed the correct steps in doing the overhaul. I would suggest that you bring your car to a reputable shop and have it diagnosed systematically to clearly identify the problem. Dont lose hope.
Thanks