Hi, I jerked the engine on my 2011 F150 with 5.0 coyote (leaky intake valves) at 160,000 miles (had a miss since 135,000). The replacement engine is a 2014 wrecking yard 5.0 with 110,000 miles. Would you replace motor mounts-$350? Alternator-$400? A/C pump-$400? what else? since they are so easy to do while the engine is removed and difficult to do later. Thanks for your advice!

 

I wouldn't, but it's your money.

 

I would definitely replace the water pump (usually about 140 k miles for replacement) & all the tensioners & idler pulleys belts etc. ... Probably wouldn't. be a bad idea to thoroughly inspect your other hoses including the Y hose @ the thermostat area also... Alt. is a little tough to replace later so I would consider that also...(it is about time) .... Anything else is your choice after some inspection?? Rock Auto maybe your friend here for parts (Alt. @ 400 sounds pricey ??)

 

Thanks! Good reminder on the radiator hoses and Y. I had replaced those twice already on the 160,000 mile motor and the o-rings were leaking again. Plan to replace radiator because it has 160,000 on it and I do most of my driving idling around the farm in the California summer with A/C on. Which is part of the reason the back valves hammered out I think. Want to get a Lightning instead because it would thrive in those conditions, but that takes a big chunk of change.

 

Does a Rock Auto alternator last as long as Ford OEM? In my experience, I am better off with the 100,000 mile used OEM than with a local NAPA replacement.

 

If it was my engine i would have just put a new set of heads on it the engine you're putting in only has 25,000 less miles on it than when you started having miss problems on your original engine !!

 

Yes, that's most likely what I should have done. The original 2011 engine also uses some oil which is ok but disconcerting considering the known cylinder out of round issue with 2011s. I thought it would be less work to change out the motor than change out heads but by now I'm thinking I was wrong. I am gambling that the 2014 engine will give me another 25,000 miles trouble free driving and let me sell it with a free conscience.