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Discussion Starter #1
I orginially bought my 95 XR7 with the 4.6 because I didn't have any money to buuy anything else. I didn't htink that the guy before me took very good care fo it, but I didn't care much because I didn't plan on keeping it for long. Now that I've had it for a while, I've grown to really enjoy it and I'm thinking abotu keepign it and fixing it up a little.

That being said, if I do that I'd like to make sure it lasts. Given that I don't think it has been well taken care of I thought I'd ask about some relativly inexpensive overhaul options. The engine burns some oil and I don't think the previous owner ever changed it...just kept adding new oil when it'd get low. It's got almost 110,000 miles on it.

In case you're curious, I'd like to beef up the performance a little but I'm not looking to race it.

Thanks for the help!

=J=
 

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do a search for PI engine swap..... 4.6's last a long time, mine had 165k on it when i pullled it. You switch a slightly thicker oil, like a 40wt to keep the valve seals from leaking, which is why you are burning oil. Hav the plugs and wires ever been changed? also, get a bottle of Seafoam from Napa and clean out the top end......

Keep in mind, if you are willing to spend the 1300ish on a complete motor swap, you will not be sorry, but if that isnt in the cards, then jut keep up maintenance on it.
 

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the oil burning i'm guessing you get some smoke occasionally from the taippipe too right?

that's common on 94-95 engine as the valve stem seals are not the best in design.

change the oil and some seafoam and the engine will not fail you for long time to come.

make sure you take care of the tranny too.
 

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Was going to suggest running through a can of Seafoam as well. Change the oil a fresh tune up.....then run it for another 100,000. :)
 

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Discussion Starter #5
Right on. Thanks for the advice. I don't really plan on doing a complete engine swap as long as this one is running, but if I find myself in a situation where I need some serious engine work, then I will definitely do the swap. Until then I'll just follow your advice and hope the damage done was minimal.

Thanks again,

=J=
 

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Just so you know . . . not changing the oil regularly leads to oil contamination from bore wash. Fuel in the oil = oil breakdown = SERIOUS wear. I had 160k on my 2000 when it was pulled apart. Literally NOTHING was re-usable . . . chains, guides, tensioners . . . you name it, it was worn beyond belief.

Modular engines last a long time with religous oil and filter changes . . . but I've seen firsthand what they look like inside when they're not maintained, and it ain't pretty.
You might want to consider pulling the cam covers (and front cover to take a look at the chain hardware) if you don't want to go in for a big-money rebuild.
 

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Discussion Starter #7
I might do that. I think if I needed a major rebuild I'd just pick up a Mark VIII engine or something. From what I've read on here, the price wouldn't be much worse (if any worse) than doing a major overhaul of the motor I have. I think I'll just maintain my motor the best I can, until it blows up and then do the swap.

=J=
 

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I've not heard many tales of a factory stock 4.6 motor (in our cars) failing. If it does it's because it's been extremely beat. Remember, Ford programmers built in fail safes for the idiots who would abuse them. Like, rev limiters and shift point timeing retards. But that does nothing for the lack of common sense, like changing the oil :rolleyes: . A little used oil between oil changes can be expected with higher milage motors, and a little smoke too. Just keep the oil changed and keep the motor in a good general state of repair. My T'bird had 149,000 miles on it when I bought it and is now over 200,000 miles. Enjoy your car! Remember, back in the "Ahem" '70's and '80's, if it had over 75,000 miles on it, it was tainted meat! and should of been avoided.:D
 

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Well sir do I have another tale for you.

I got my 96 LX 4.6 from my stepmother on March 28th with little over 110K. Car had 1200 RPM idle. Changed out IAC and oil change, butter smooth 700 RPM idle.

Fast forward to one horrible day:

April 20th

I was coming home from a friends to go to work, and i was doing 70 MPH at 2.5K. Car was running fine, then one second went buy and the entire freeway behind me was flooded with a whole lot of smoke. Tripped out, went to I look down at coolant temp: On the o in normal like usual, oil pressure fine, then check gauges comes up, the little red light, my steering and brakes die and the NPI was TOAST, all in like 5 secs! Pull over, buddy cranks it while I watch a huge bubble right below the valve cover. Oh $^^&
 
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