International 6.9 IDI
International 6.9 IDI
I recently finished up building a new engine for my 86 Ford F-250. i thought some people might appreciate an interesting build and some pictures. when i got the truck it was running well and had a new transmission. however it had a crack in the block by the block heater. it was a known issue with the early 6.9 however the truck was cheap and so are the engines and parts. so i decided to get the truck and build an engine from the ground up for it. the first step was getting a used but ok engine off of craigslist. [img]<a href=[/img]" />
next was to strip the engine down to the bones and inspect and measure everything.[img]<a href=[/img]" />[img]<a href=[/img]" />
then i began the process of blueprinting the engine. first while the block was at the machine shop i balanced the rods and pistons to within a gram of each other.[img]<a href=[/img]" />
i have worked on everything from 25cc 4 stroke engines to 4360cu/in 28 cylinder twin turbo supercharged engines and holy s### that crank was heavy for an engine its size and power rating i weighed it in at 117lbs.[img]<a href=[/img]" />then i had the block decked .010" and the cylinders bored out .030" i honed all the cylinders to within a few ten-thou of each other. i don't have any pictures of the block after getting it back but here it is right before i sent it out.[img]<a href=[/img]" />
after putting the heads on and starting to assemble it. at this point i was rushing to get it together so i don't have as many pictures. however i re-cut both the valves and seats with a three angle job. then i studded the entire engine with ARP's.[img]<a href=[/img]" />
liberal use of both machinery gray and ford blue.[img]<a href=[/img]" />
accessories going on and getting ready to drop it in the truck.[img]<a href=[/img]" />and finally looking quite nice in its new home[img]<a href=[/img]" />