Any reputable shop will Magnaflux or pressure check the castings for cracks and measure the combustion chamber volume to determine if and how much the head surface has been cut.After inspection, the cylinder head-to-block surface should be resurfaced the minimum amount to ensure a flat sealing surface ( Please refer to previous article on cylinder head surfacing). Next hardened valve seats to combat erosion from the effects of unleaded gas should be installed. This is a fairly expensive operation but essential if you plan on getting 50,000-100,000 miles out of your rebuild. Next the valve guides and valves should be inspected for wear and replaced if necessary. A precision valve job to factory specs is next. Then the heads should be assembled with new valve stem seals with valve springs shimmed to the correct seat pressure.
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2 comments:
I have gone through your scribes,they are very much educative especially to us trades man.
Ask around work colleagues and acquaintances in your field if they can recommend a precision machining company to you.
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