*harimon21,

you don't just replace the valve seal by it self

normally valve seals are replaced kapag pina-top overhaul ang makina. Kung papapalitan mo lang ng valve seal without going thru the whole process of top overhaul, you will still pay the amount of the top over haul kasi babaklasin nila cylinder head mo and its parts to get to the valve seals and no mechanic in his right mind will do that (replace valve seal only and no TOH) if you find one, then niloloko ka nun.

You only replace valves kung meron nang sira, bungi, or baluktot sa valves mo.

Kung gusto mo makamura, hanap ka ng "complete" cyclinder head lang para dyan sa makina mo, then buy it, but be sure that the one you will buy does not have a leak, how will you know? Bring a competent mechanic when you buy one. This is what I did when I f#cked up my cyclinder head.

Kung malapit ka sa San Juan or don't mind travelling to San Juan, follow Mile2's suggestion, contact Ray Sarol, I also know the guy, he's been the one taking care of my car for 9 years na.

HTH