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Hey, you guys are awesome, thanks for all the piston tech replies and confident excitement about bumping the compression. still thinking about that motor rebuild, just been busy and it's lives like a little dream out in the distance. for a fun formula (from memory) :(barometric pressure) 14.7...

well now i am joining the "difficult to be shifting" with the 5 speed manual transmission in my wife's 1998 4.0 explorer sport..".syncro's whirring up the rpm cause the input shaft is still spinning" shifting issue. My solution was to weld two tire irons together and weld those to the shifter...

Hi all, I have been considering rebuilding the 4.0 in my 1996 Ranger (over 300K, just starting to smoke a bit and use a little oil) but have not found anyone advertising their manufacturing anything but stock replacement. I'd like to run about 10:1 or i likely won't bother rebuilding...