4.0 Engine

[JGren91]

I was wondering if anyone could give me on some advise on what to do with my 4.0 ranger engine. I just bought it and put a new clutch in it, but it has 204,000 miles on it. I was thinking about rebuilding the engine and cleaning it up would that be a good idea? any more thoughts on what I should do would be helpful. thanks

 

[killj0y]

drive it till it dies, then rebuild it! In the meantime start buying up all the parts you'll need to rebuild it

 

[BRONCONUT]

drive it till it dies, then rebuild it! In the meantime start buying up all the parts you'll need to rebuild it

x2, if your planning to stay with the v-6. Maybe start saving for a v-8 swap.

 

[AllanD]

i'd say buy a RUNNING spare wrap it up really well stick it in a corner of your garage and forget you have it until needed.

generally speaking a complete engine casket set costs more than some junkyards I know charge for an engine they will SHOW you running before they pull it from the donor

 

[06RangerXLT]

yea you will run it to 300 before it blows up.

 

[Will]

It it's not broke, don't fix it.

If it's already out, wouldn't hurt to mike it and see what shape it's in. I put standard bearings in mine at 150,000 miles because the oil pressure was getting a little weak, and also removed the lifters and freed them up because they were stuck. It's been running like a new engine for the 40,000 since. As well as fuel injected engine run, the rings and valves should last 300,000 no problem, as long as you change the oil a couple of times a year.

 

[Brandon Nootenboom]

My 97 Ranger's got 248,000 miles on it's 4.0L with no real engine work done, just general maintenance. I wouldn't dig into it until ya start having any real problems with it. Just keep up on your oil changes and you should get a lot more life outta it before ya have any problems

 

[adsm08]

My one room mate in college bought a 98 Explorer with just over 100,000 miles on it. During transmissions class he decided that it would be a good idea to rebuild it as a form of "preventative maintenance" event though he wasn't having any actual problems with it.

He bought the clutch and steel kits and all the seals, took it all apart, and found out it had just been rebuilt recently enough that you could still see the numbers printed on the clutches.

$3000 and two more rebuilds (one by Aamco) and a just barely passing grade in the class later, his transmission worked properly again. 6 years after the fact, when I walk into the auto tech building I can still smell the horrible smell from the first time it grenaded.


Moral is, if it isn't broken, don't fix it.

 

[JGren91]

thanks guys for the helpful knowledge.