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Game Over.. for the 300 six
#1

.jpg   engine.jpg (Size: 131.07 KB / Downloads: 62)
.jpg   engine 2.jpg (Size: 147.91 KB / Downloads: 59)
Pulled the 300 six from my 67 F250 Camper Special. Had a bad knock all of a sudden. This is what I found. Note the aluminum in the bottom of the oil pan. That's mostly piston skirt. The other pic shows the connecting rod hooked to.. nothing.
I've got a mid 80's six I'm swapping it out for. Never ends..
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#2
Wait...what? You killed a 300 :o


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#3
The 300 I-6 has a rep for being pretty much indestructable. What did you do to it? Huh

Ron
Rusty, a 1973 Mach 1, needs a lot of work.
Billy, a 1976 Ford Bronco, also needs a lot of work.
El Guapo, a 1986 F150, frame-off Resto-Mod.
Bubba, my 1994 F150, daily driver
Formerly, a 1973 Ford Mustang Coupe - a work in progress, then a car-b-qued banana.
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#4
They are awesome motors! But I have a killed a couple in my day also! One was our plow truck that had over 300K on it! We drove my 81 F150 into the garage with what ended up being a broken rocker, couple bent pushrods and 4 out the 6 pistons had broken rings!!! And it was still running!!! BARELY!
Good luck with the new motor, you will be good for another 100,000 !

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
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#5
Well guessing it was combo of things. The lifters started making noise and it happened on cold start up. Maybe not getting the oil it needed. I didn't test the oil pump. Maybe it lost pressure over time. Gauge said it was fine.
It did run like this but with a horrendous knock. Well until the rod jammed into the cylinder wall and then she locked up.
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#6
Fortunately, there are a lot of those motors out there, so you should be able to find one at the local Pull-a-Part to rebuild and replace. That is, if that old truck is worth saving. Good luck.

Ron
Rusty, a 1973 Mach 1, needs a lot of work.
Billy, a 1976 Ford Bronco, also needs a lot of work.
El Guapo, a 1986 F150, frame-off Resto-Mod.
Bubba, my 1994 F150, daily driver
Formerly, a 1973 Ford Mustang Coupe - a work in progress, then a car-b-qued banana.
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#7
Marvel mystry oil couldn't fix it? Or maybe a little motor honey?
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#8
awww too bad...300 six is my fav ford six....I use to beg my buddy steve to sell me his little bronco with a 300 six...what a good little motor..great gas milage and power, Hopefully you can fix it back up " Unless you really want a v8 instead"
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