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Basic Engine Question from a Newbie!


2.3

They get milage. I tow the hell out of my 2.5, and it isn't much bigger.

You said everyday driving and light hauling, small towing. That sounds perfect for a 2.3/2.5. If you want a v6, get the 3.0.

2.9....just say no (cracked heads are not my idea of fun).

4.0....not for everyday driving (too much gas)

M5OD on all.
 
Both of my rangers have the 4.0. My 90' has the OHV and my 05' has the SOHC. Neither will disappoint on the road, but both love to drink gas. I towed my 90' behind my 2005 close to 50 miles a couple of weeks back. My ex-girlfriend had a 91' ranger with a 4.0. She once went nearly 2 years without changing the oil :pissedoff:, and never missed a beat. I also used to have a 2000 5speed with the 2.5. Much slower, but got close to 10 MPG better than my current two trucks.
 
MidyearGuru,
I'm a little late here, but feeling like adding some small input for you. AllanD said it all...the 3.0 is good, but you gotta "spin" it. Once you learn to let it rev, it will definitely work for you. Mine tows a 14ft. fish/ski boat, and sometimes an '89 Wrangler on a tow bar, and will do fine with each, if I let it try like hell. As for highway economy..I concur with low 20's/mpg. 2000 3.0 4x4/auto/3.73.
 
why? what is wrong with those kind of transmissions?

I think this may be true if you tend to abuse your vehicle. I have the Mitsu tranny (Pan on the bottom) in my Ranger 4x4 2.9 engine. Has 197,790 miles on it. I've pulled tree and shrub stumps out with the truck. Other than that I just drive it normally back and forth to work and haul car parts and bikes in the back. I drove it for MANY years then I read here that you don't want them. Made me paranoid for awhile, then I got over it. I've seen guys with Mazda trannys locally have theirs crap out before mine has. I also think the 2.9 is a decent engine overall. They are loud with their lifters ticking, but if you can live with the noise, there's nothing wrong with them.
 
If you plan to tow forget any of the 4cyl engines.
Horse hockey.

Mine does fine towing.

Picture this,
me in one lane 2.3N/A but modified, 5spd, 4:11 rear, towing a 3500# boat
In the other lane a F250 diesel towing a much larger boat.

After 6 stop lights he still couldn't pass me, actually he had to merge behind me after his lane ended. The look on his face was priceless. :)
 
Thank you, everybody, for all your input. I now have a much better idea of what I want. Looks like I've found the right place for all my Ranger questions.

Russ
 
I think this may be true if you tend to abuse your vehicle. I have the Mitsu tranny (Pan on the bottom) in my Ranger 4x4 2.9 engine. Has 197,790 miles on it. I've pulled tree and shrub stumps out with the truck. Other than that I just drive it normally back and forth to work and haul car parts and bikes in the back. I drove it for MANY years then I read here that you don't want them. Made me paranoid for awhile, then I got over it. I've seen guys with Mazda trannys locally have theirs crap out before mine has. I also think the 2.9 is a decent engine overall. They are loud with their lifters ticking, but if you can live with the noise, there's nothing wrong with them.

I'd put it this way:

If you already have a working Mitsu transmission, it's what you have and it will do OK. If you're buying a truck, you can do MUCH better for the same money.

If you have a BROKEN Mitsu transmission, don't replace it with another, for the same reason.

I had a Mitsu FM145 in the Bronco II for several years. It wasn't entirely problem free (had a 5th gear whine that I had to fix), but it never blew up its input bearing.

Mazda transmissions generally die due to screw ups, generally wrong fluid or not noticing leaks for several years. Mitsu transmissions can die with absolutely correct use (though fortunately, they usually give plenty of warning as a whine in every gear but 4th).
 
I'd put it this way:
If you already have a working Mitsu transmission, it's what you have and it will do OK. If you're buying a truck, you can do MUCH better for the same money.

Fair enough. I just felt he needed to know that not all Mitsu trannies are broke like I read here several years ago. The guy could come across a sweet deal on a really good truck and then see that it has a Mitsu tranny and based on some statement, walk away from a truck that could last like mine has.
 
FWIW in all the RBVs Ive been around Ive seen 1 TK5 fail, 1 fm146 fail and 1 M5OD fail...
 
a lot of people talk about the 3.0 being gutless.

Well, it's revvier than any other stock ranger engine EXCEPT the
4.0 SOHC introduced in '01.

The 3.0 simply needs to spin to do it's job.
The 2.9 also needs to spin, compared to say... a 4.0OHV.
The 2.9 just needs to spin less than the 3.0.

If you plan to tow forget any of the 4cyl engines.

AD

+1

And I'll add my $0.02...

With a manual transmission and the right gears, there is absolutely nothing wrong with a 3.0L, it gets good fuel economy and mine has moved everything I've ever put in it or hooked onto it....

I've had nearly a ton and a half of limestone in the bed several times, same goes for topsoil. I have no idea how much some of the other stuff I've loaded it down with weighed, but I know that even with the heavy duty spring packs I've built for it, I've sat it down pretty good in the rear. For towing, I've towed both my 88 BII and my 89 choptop behind my Ranger, and it had no problem moving along at 65mph on the highway. All you have to do is have it set up to do it, keep your head about you, and let the engine rev up. The 3.0L likes to be between 3,000 and 5,000 rpms.

2.9's are good motors as well, though they tend to have an issue with cracking heads. There's two ways of dealing with that. One is to replace the heads with aftermarket ones, preferably World Products heads. The other is to approach it how I did with my choptop. I put a 180* thermostat in it and went to a radiator from a 4.0L Ranger with an auto tranny (I know that the rads from the 89-92 body style fit, not sure if any others fit). I also have a mechanical coolant temp gauge that I keep my eye on when I'm running it. So far with this setup I haven't got it much past 190* even on a pretty hot day and running it a lil hard.

The a4ld auto trannys are mostly junk because most people don't make any attempt to take care of 'em. If it's an auto with overdrive, up until somewhere in the 90's, it's an a4ld. If you keep the fluid really cool, replace it regularly with a filter, it will hold up as long as you're not too abusive.

4.0L motors are good for hauling too, but typically more difficult to find than a 2.9 or 3.0. IMHO, I wouldn't go anything less than one of the v-6 motors if you intend to do much hauling/towing at all. Sure you can use a 4-banger, but a properly setup v-6 will do the same work with less strain.

All that said, back in the spring I sold an 89 BII with an a4ld auto tranny. I bought it waiting in line for the crusher cuz the yard seems to have something against holding onto BIIs for any length of time. But anyway, I got it with a clean title, fuel pump was replaced at some point and the splices came apart in the tank. Soidered the wires up and she fired right up. Did a very thorough going-over of the truck (it had apparently lead an abused life), and fired it up again. It sat coughing and sputtering on the shop floor for at least 5 minutes before it evened out. Thing ran like a top and the best estimate of the mileage was right around 200k. I replaced the tranny fluid and filter, fuel filter, plugs and wires, cap and rotor, air filter, o2 sensor, PCV valve, and dumped two bottles of fuel injector cleaner in. Later I changed a few other sensors an stuff.
 
x2 on the 3.0 and 2.3
I will defend the ol' 2.3. Mine had been beat to piss by the previous owner, and I have even done my fair share of abuse. I've towed plenty of stuff with my 2.3. Bed heaped full of bricks, an s-10, a GMC cabelero, and a toyota(out of a creek sunk to the hood in mud, not to mention up an incline). No trouble. I even drug the s-10 a block with it's brakes locked ( guess he didn't want to leave yet...lol.) All this with 4.10 gearing and a 5spd. I will also stick up for the 3.0. Very good engine, the few times I have driven one has led me to want one. Plus you can't kill the vulcan, it's a good design, reliable, and easy to work on. My next truck will hopefully have one under the hood. If you drive smart and have a 5spd you can get really good milage out of both. Both are revers, if you want power, just rev them up and go! Go with a Mazda 5spd, and some 3.73's or 4.10's and you'll be good.:)
 
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I had a Mitsu FM145 in the Bronco II for several years. It wasn't entirely problem free (had a 5th gear whine that I had to fix), but it never blew up its input bearing.
I must be excpetionally gentle with my trannies. I had over 350K on an FM145, and well over 100K of that was behind a 2.3 turbo motor. Max towed weight with that tranny was 8000# and towed quite a few cars, on dollies, home from as far as 250 miles away.


I've had nearly a ton and a half of limestone in the bed several times, same goes for topsoil.
Hmm, that seems a bit of a stretch there John. 3000# in the bed, on top of a Ranger rear axle? I thought I was doing good with 1500# on top of a 9".
 
I'd put it this way:

Mitsu transmissions can die with absolutely correct use (though fortunately, they usually give plenty of warning as a whine in every gear but 4th).

I can vouch for that. While not my daily driver this (fm132)tranny has been in a death spiral for quite a while.
 
I must be excpetionally gentle with my trannies. I had over 350K on an FM145, and well over 100K of that was behind a 2.3 turbo motor. Max towed weight with that tranny was 8000# and towed quite a few cars, on dollies, home from as far as 250 miles away.

I suspect it's that you have the sense to put the thing in 4th when working it hard, and a lot of other people don't. The 5th gear whine existed when I got the vehicle, and I suspect it's from towing in 5th. If you look at the 5/R oiling, there isn't much of a passage back there.

4th gear doesn't generate the thrust loads that kill the input bearing, as well.
 
Correct, Mike, I said I wasn't nice to it, I didn't say I was stupidly abusive to it. It put up with a lot of full throttle (N/A as well as turbo 4) use in every gear except 5th.

I just gutted an FM145 but didn't take notice of the oil passages. Noticed it was better constructed than the TK though.
 

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