2001 4.0 Piston In Pieces Help!!!!! - JeepForum.com

 
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post #1 of 9 Old 09-22-2009, 03:14 PM Thread Starter
jeepdudeuk
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2001 4.0 Piston In Pieces Help!!!!!

Hi everyone, well turns out my lifter tap turned out to be a broken piston, after installing a new crank and lifters!!

Car is 2001 Grand 4.0 ltd done 102000 miles with full dealer history.

i have read a few threads on here and understand that the pistons in this year car were weak!!!

No 4 piston is in bits in the sump so will need to replace it, my question is where do I buy one or 6 pistons with rings from and the right price and is there a stronger version that I should install or have Jeep rectified the problem?

Me being from England struggle to get cheep parts or any helpfull info so some help would be great.
I have had a look on globaljeepparts.com is this the right place to help???

Thanks


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post #2 of 9 Old 09-22-2009, 04:17 PM
StrokedWJ
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I'll recommend Falcon automotive parts 800-756-1114. They're in Florida and I don't know about international shipping but thats where I got my parts from when the same thing happened to me. They have awesome prices and great customer service.

2000 WJ 4.5L - Stroked, Locked, & Long-Armed
Looking for 6" WJ springs!

Last edited by StrokedWJ; 09-22-2009 at 05:45 PM.
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post #3 of 9 Old 09-22-2009, 09:37 PM
Brian's 97 ZJ
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If your piston failure was anything like mine, you're going to want to pull the head off and check for damage to the cylinder walls. It may not be as simple as just replacing the piston.



The wrist pin scored the walls pretty deeply. Mine was the #3 that failed. Drove it around 6 miles like that to get it home.

Good luck and keep us posted.



- Brian


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post #4 of 9 Old 09-22-2009, 10:01 PM
WiCkeDuDe
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Dude a little engine restore poured in will take care of that in no time. Restore your horsepower.


Quote:
Originally Posted by Brian's 97 ZJ View Post
If your piston failure was anything like mine, you're going to want to pull the head off and check for damage to the cylinder walls. It may not be as simple as just replacing the piston.



The wrist pin scored the walls pretty deeply. Mine was the #3 that failed. Drove it around 6 miles like that to get it home.

Good luck and keep us posted.



- Brian
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post #5 of 9 Old 09-23-2009, 12:48 AM
driabyor
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Is the block ok....
Flatlander Racing - AMC & Jeep Engine Rebuild Kits
Master Engine Kits $ 609
Include:Pistons, Rings, Gaskets, Cam Bearings, Rod Bearings, Main Bearings, Oil Pump, Freeze Plugs, Camshaft, Lifters, Pre-lube, and Timing Set, and Valley Pan (if applicable)
.Overhaul Kits$355
Include: Pistons, Rings, Gaskets, Cam Bearings, Rod Bearings, Main Bearings, Thrust Washers, Aux Shaft Bearings (if applicable), and Valley Pan (if applicable).
Re-Ring Kits$229
Include: Rod Bearings, Main Bearings, Thrust Washers, Rings, Gaskets, Valley Pan (if
AMC-Jeep 242 4.0 L6 ('99-02)
Note: w/HYPER Pistons51008D $229 $355 $609

94 Grand Cherokee ... 332,000 miles
5.2 liter 242 :)
Rancho 5000 steering stabilizer
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post #6 of 9 Old 09-23-2009, 01:07 AM
ratmonkey
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If you drove for much time on a cracked piston you're probably in need of some machine work on the block. Or a new block.

Good luck.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #7 of 9 Old 09-23-2009, 03:39 AM Thread Starter
jeepdudeuk
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piston will be out tonight so will keep you all posted on the block!, can anyone tell me where to get the piston???

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post #8 of 9 Old 09-23-2009, 10:10 AM
LordHobbit
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rockauto, summit, autozone, any other local part store, you name it you can probably get one.

93 red ZJ 190k 4.0. Spent more money than I should have ...

Isn't red the only color a vehicle should be?
If at first you don't succeed, use more speed.
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post #9 of 9 Old 09-23-2009, 03:05 PM
StrokedWJ
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I dunno if you missed my post recommending Falcon...but their prices are the best you'll find. When I called around the local auto parts stores (NAPA, Autozone, etc) the pistons were ~ $45 each. I got the same piston (Speed Pro) for ~ $16 from Falcon. And for whats its worth, I'd REALLY recommend replacing all of them while you're in there. You'd hate to have this happen again.

2000 WJ 4.5L - Stroked, Locked, & Long-Armed
Looking for 6" WJ springs!
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