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Old November 26th, 2005, 02:20 AM   #1
MonkeyBiz
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This is gonna be long, but please read.

I haven't been driving my jeep alot lately, it has been sitting parked. I got in it the other to take it to get gas. It started up great. Got out on the road, it sputtered a bit, but then smoothed out. Got down the road 1.5 miles, I started to slow down and it stalled. Didn't want to start, but finally fired. Got to the gas station, filled it up (45$). Oil looked good, but didn't see any fluid in the radiator. Drove it about 5 miles to Meijer to get some Coolant, and it was acting like it has a wet distributer. Didn't have any power, and wouldn't rev over 3K RPM. Got to Meijer, got coolant & wd40, sprayed down distributer (ignition stuff) to get rid of moister. Then started powering coolant in the radiator. About 5-10 seconds later, it started coming out the bottom. Now, I know I have a hole in my radiator. It is snowing like mad out, cold as hell. So I figure ****it, and drive it home. Runs just fine for about the 1st 4 miles. Then, same thing. Start to slow down, and it stalls. This time smoke is coming from the hood. I am less that A mile from home. Wait about 5 minutes for it to cool down. Starts right up drive home. Dies in driveway. Smoke is now pouring from engine compartment. While I wait, open hood, take off Oil Cap LOTS of white smoke in the valve cover. Must be steam. I put the cap back on, so I don't let the secret smoke out of the motor. 20 min. later fires up, and I put it in it's parking spot. I look where it was previously parked. Ground is still wet. This is what I figure. Had water in radiator, froze prev. night, thawed during day. Put hole in radiator, and POSSIBLY cracked the block. Now, with me driving it, I overheated the motor, probley warped the head. Now my question.

Should I just thow another 2.5 in? Keeping in mind, my Tranny doesn't have 5th anymore, so I need a new tranny anyways, and obviously a new radiator. OR
Swap in a 4.0.motor, tranny,radiator (which I will have to buy the 2.5 version of anyways) wiring harness, adjust driveshafts, new wiring harness, ecm, hoses, TC with 23 spline. OR
Do all that, but make a 4.7 (4.5) depending on which artical you read.
Thoughts, comments, suggestions?

The only reason I don't say 350, is carburation isn't an option for me. I'd rather have a 2.5 MPI, rather that a carburated V8.
Also, what are the thoughts, on getting a new radiator, pulling the head, machining, and reinstalling. Is there a simply way to tell if I cracked the block (pressure test?) other than visual inspection? Does anybody think that it is worth it to just fix this motor? Keeping in mind my motor has well over 200K HARD miles on it.
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Old November 26th, 2005, 07:55 AM   #2
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Just find a used radiator and fill it. See how it runs. Use it while you build and collect parts for it's new heart.

When you replace it, I vote for a stroker motor. Btw, you can do various sizes of stroker, 4.5 4.6 4.7 etc. Just depends on what machining and which parts you use.

350 is still an option also. It isn't like a FI 350 is hard to find and it would require just as much work as putting in a 6. You could always go with a v8 from a grand cherokee.
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Old November 26th, 2005, 10:35 AM   #3
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There was an article a couple months back in JP about the differnt cost associated with upgrading from a 2.5 to numerous other options (stroker, v-8, 4.0).They ended up going witha reman 2.5 because it was way cheaper, like 3-5 thousand cheaper depending on which other option they compaired it to. Here's my opinion and one that I have thought alot about as I have a 2.5 as well. When my motor goes, I plan on swapping in another 2.5 reman from ATK, you can't beat the warrenty/price comparison to other remans. Here's my reasoning. I have yet to go wheeling anywhere (Wellsville, badlands, wisconsin, rockport) that my 2.5 didn't get everything done that anyone elses rig got done. It lighter (only like 80lbs though) and it's way cheaper. It's going to break less parts than a v-8 too. If you go with any other engine your going to need the following major parts.

-new tranny
-new t-case or swapped out parts
-new motor mounts
-new wiring harness
-new computer
-someone to install it if you can't.
-all the accessories for that engine (water pump, alternator, pwer steering pump etc)
-prolly new drive shafts

-if you stay 2.5 then all you have to do is swap out the long block
-you can still reuse your tranny and t-case and even if you need a rebuilt AX-5 you can buy an extra for a couple hundred and rebuild it while you use the other one.

You've just saved yourself enough money to dump in any other components you want like a winch , lockers, bigger lift or new tires, new gears etc or just wheel what you got. And other than thick gooey mud, you can wheel everywhere everyone else can. Shoot if you want more power you could turbo up the new 2.5 and get some.

Now someones going to jump and say that you can do this swap cheap and maybe they're right but I don't think it's the norm and I bet they used a junkyard motor too which might put you back in the exact same situation. Do it right, do it once. that's my 2 pennies
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Old November 26th, 2005, 12:31 PM   #4
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I would try a radiator first thing. If the engines screwed you need a new radiator anyway. Fifth gear always goes out when paired up with a 4 cyl. Do you have a lift and bigger tires? Have you regeared?

I would go with a stock 4.0 or a stroker (depending on how much time you have.) I would also stop using fifth gear (once you rebuild) I've even seen people rebuild thier trans without fifth gear just to avoid this problem.
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Old November 26th, 2005, 08:39 PM   #5
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Well, in responce...
Getting a new radiator isn't just "get a new one, you are going to need one anyways". If I were to to a motor swap, the 2.5 radiator isn't gonna cut the mustard for a bigger motor.
I have not regeared, 4:10s. I have 5 inches of lift, and 33 in trXus.
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Old November 28th, 2005, 09:29 AM   #6
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I knew you didnt drop in a 454 like you claimed

Personally ridding myself of my 4cyl was the best thing I ever did. Carbed or not. Just set up the carb properly, or FI is also a good way to go, 4.0 or 350 whichever
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Old November 28th, 2005, 10:41 PM   #7
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funny figured out today that i got a hole in my radiator too....lucky me....now i gotta find a new one and fix it this should be fun....

good luck dude..oh and get a 4.0 and stroke that baby out...fix it enough to run while you build the new power plant..should be fun..
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Old November 29th, 2005, 06:52 AM   #8
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Its too bad you are down on carbs so bad. With that motorcraft carb on my 304 theres almost no reason to have EFI.

I understand the novelty of being able to run at "extreme angles" but by the time mine stalls the oil pump has long since quit picking up oil anyhow.
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Old November 29th, 2005, 07:06 AM   #9
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Quote:
Originally Posted by smasheromalley
Its too bad you are down on carbs so bad. With that motorcraft carb on my 304 theres almost no reason to have EFI.

I understand the novelty of being able to run at "extreme angles" but by the time mine stalls the oil pump has long since quit picking up oil anyhow.

yeah seems everyone forgets that when an engine is running there is an average of only 2 quarts in the oil pan that
1. goes to the front of oil pan at angle
2. does to extreme rear of oil pan at angle.

Nick you saw what i have dealt with on my SBC first hand, as far as the install etc no trouble, little breakage and when we played tug of war in whitehall i pulled you around in 4hi at idle, you were in 4 low and playing with the gas. (long time ago you might not remember :tonka: ) Just make sure you get a good motor no matter what route you do, I got burned on my reman.

I like my automatic, but I miss my stick shift, though i get as good if not better milage with my setup now over my 4 banger (i never got over 18 with the 4 popper) City milage sux ass with my small block.

going 6 or 8 you will be changing the same parts.

Staying with a 4 and building that up would be the simplest and cheapest route to go, its a reliable motor, though IMO way to underpowered for my tastes.

When you need help doing maybe I can make the trek to help you this time.

can you solder the radiator up? I soldered mine 4 or 5 times to milk it along when i knew i was doing a v-8 swap in the future.

Also its only 75 bux to have the radiator re-cored IIRC. that would get you through too
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Old November 29th, 2005, 07:44 AM   #10
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One more thing tho... If you do stay with the 4cyl dont think you are going to be getting tons more power by "building it up". If you think you might want more power, do it now and add more cylinders.
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