changing valve seals

[jazcker]

mga sir, just wanna ask kung major ang pagpapalit ng valve seals? if so, ano-ano ang mga dapat isabay na sa pagpapalit nito?

thanks...

[fourtheboys96]

mejo major yang pagpalit ng valve seals kasi inaalis usually yung cylinder head to access the valves and seals.

pwede din sikwatin na lang yung valve seals without removing the head although mas complikado at not sure kung meron gumgawa niyan dito sa atin.

pag inalis yung cylinder head always inspect yung internal parts like the engine block, sleeve, valve guides, and the valves itself. replace all oil seals with new ones. also replace gaskets.

pwede mo na din isabay yung timing belt at tension bearing especially kung mejo matagal na ito or nearing replacement.

one thing i've learned kung papabuksan mo ang makina is to be ready with unexpected costs. usually merong unexpected sira inside the engine.

as always, go to ur trusted mechanic.

[jazcker]

thanks...

[speedyfix]

there is a tool to replace the valveseals without opening the head. you can text me if you want an estimate.

[puroy]

question, ano po ang symptoms pag kailangan nang palitan ang valve seal?

[fourtheboys96]

afaik, pag luwag na valve seals mo, may puting usok pag cold start then pag mainit na yung makina, mawawala yung usok kasi nag expand na yung seal dahil sa init. eto yung explanation sa akin dati.

[banawe]

question, ano po ang symptoms pag kailangan nang palitan ang valve seal?

usually pag maputi ang usok and parang palyado yung revolution ng makina mo ...

usually pag palit ng valve seal kasabay na yung cylinder head mo valve cover mo and usually mg oil seal mo ... more or less top overhaul yung car mo

kung tumirik na yung sasakyan mo ... complete overhaul and piston and liner ... and machine shop ... better to buy a surplus machine if the makina is beyond repair ...

BANAWE AUTO SUPPLY
regy

[vicvic]

question, ano po ang symptoms pag kailangan nang palitan ang valve seal?

Ang purpose ng valve seal is to control flow of oil through the valve guide.
Pag nagbabawas ka ng langis pero wala namang leak sa rings or other portions, malamang valve seals na to.

Pwedeng madali rin mag foul yung plugs mo.

meron namang valve spring compressors na hindi na kailangan tanggalin yung head.

Punta ka sa mga shops na merong overhead valve spring compressors.

[4JGtootsie]

Why do you think valve seal is the problem? Are you loosing oil above normal.

In case you will DIY, an air compressor will come handy in case the valve slips down. Good luc on your project.

[speedyfix]

replace only the valve seals pag di nagbabawas ng tubig/overheat. kung may overheat din then pull the head narin sabay.