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September 23rd, 2007 10:03 PM #1
hello again mga gurus. kasi po makukuha ko na yung oto ko ngayong week, nagpa top overhaul kasi ako, pano ko ba mache-check kung ok na yung pagkakagawa? anu-ano dapat kong i-check?
ano ba yung engine valve? pag nagpa top overhaul ka ba pinapalitan din to? kasi sabi sakin, ni-resurface na daw yung makina kaya dapat original yung gagamiting gasket. e sa mga parts na binili ko wala namang sinabi saking bibilhing engine valve, ano po ba un? para kasing may nabasa ako dito noon about engine valve kso dko na mahanap.
guys, please help me po kung anu-ano dapat kong i-check after i-top overhaul? at kung anu-ano pang dapat ko pang malaman about top overhaul. ayoko na kasi ng backjob. at ayoko narin po kasing maloko ulit 4 d third time. at kung sakali man, pwede ko pa kaya syang ipa check sa iba para ma-sure ko na ok na yung sasakyan? ano po un bubuksan ba ulit yung makina?
pasensya na ang dami ko talagang tanong. wala kasi talaga akong alam.
thank you po sobra!
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September 23rd, 2007 10:08 PM #2
kapag bagong top overhaul nire reface nga ung valve. machine shop nga gumagawa nyan. bale dapat pinalitan ung head gasket at valve seal. kapag bagong top overhaul usually nde na mag o overheat. hindi agad magkaka pressure ung radiator cap. hindi na din mababasa ung spark plug. hindi na palyado ang takbo.
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September 23rd, 2007 10:40 PM #3
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September 24th, 2007 05:24 AM #4pag nakuha mo na oto mo sa talyer eh iuwi mo sa inyo.wag mo papatayin makina. hayaan mo lang syang naandar para ma condition yung mga gasket na inilagay. check mo mga turnilyo baka meron hindi masyado nahapitan.pati mga engine support kung ok ang pagkakalagay at hapitan mo na din.dapat walang oil leak yan.
:morgensmile:
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September 24th, 2007 06:41 AM #5
valve - ayun yung may stem na may flat head sa dulo, kung walang sira/tama yung valve mo di papalitan yan,
valve seals - yan yung parang cap dun sa may valve guides.
valve guide - dyan naka nakasuot yung stem ng valve, kung may valve na nabaluktot, normally pinapalitan ang valve guide thru a machine shop.
resurface - meaning nilinis na yung intake/exhausts ports ng cylinder head, it's just another term for cleaning, unless a port and polish is done on your cylinder head.
the valve, valve seals, valve guide and the ports can only be checked if you disassemble the cylinder head, which your mechanic did.
HTH
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September 24th, 2007 08:41 AM #6also, don't drive too fast muna, don't rev the engine to high rpm, don't shift too early din, parang new engine yan pag newly overhauled, it needs break-in siguro after 500 kms pwede na normal driving habits mo medyo alalay muna sa simula.
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September 24th, 2007 09:22 AM #7na describe na yung valve kanina. eto yung nag bukas-sara sa loob ng engine para pumasok ang hangin and/or gasolina (intake) at lumabas ng exhaust gases or usok (exhaust). pwede itong palitan pag top overhaul.
imo, refacing is done for bottom part of the cylinder head especially kung ndi na siya flat (warped).
valve lapping is kung saan ang bagong valve ay nilalapat sa valve seats using a grinding compound.
refacing is done in machine shops. valve lapping can be done by the mechanic himself.
after your top overhaul, drive mo lang kotse mo then observe mo yung sound ng makina, yung hatak at fuel consumption. then oberve for leaks.
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September 24th, 2007 11:24 AM #8
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September 24th, 2007 12:01 PM #9
*double post
Last edited by alwayz_yummy; September 24th, 2007 at 12:05 PM.
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September 24th, 2007 12:03 PM #10
check mo sig link ko to my car domain--page 2, may sample ako gn top-overhaul for u..my liteace... pm mo nalang kung may di ka nagets...
it may not be like your engine but still its a top overhaul...
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