ports have been cleaned from inside ,,,,,, this will improve the air flow ,,,,,, i always grind the ports from inside to make them shine and remove rough edges or extra casting material ,,,,, i did that decade before on f8b engine and almost every one who drive that vehicle can feel the performance difference ,,,,,, but its really a time consuming job ,,,, here i some how only clean them just to reveal the cracks ,,,,, i am not sure whether this head is salvageable or not ,,,,,,, tomorrow will visit some machine shops at koyala center sadar rwp ,,,,,,,
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