|
 |
|
 01-29-2007, 09:04 PM | #1 | ||
Registered User Join Date: Nov 2006 Location: Vancouver, WA Posts: 58 | Piston trouble...
| ||
|  |
| 01-29-2007, 09:08 PM | #2 |
Registered User 1981 J-Series Truck  Join Date: Oct 2006 Location: Sturgeon Bay WI Posts: 403  | if it were me id just get it running and have a ball... as a matter of fact there is this SWEET video of these kids and an old xj....  __________________ live free or die 98xxx, 33's, 4.10's, and plenty of flaky red stuff |
|
| |
| 01-29-2007, 09:33 PM | #3 |
Registered User 1995 XJ Cherokee Join Date: Jul 2005 Location: Watauga Tennessee. Posts: 1,764 | Are those dents from wrong spark plugs? Was the engine running before you took the head off if so did it show any signs of a bent rod? Does the dent get into the rings or is the any signs that the dent is causing any interference to the cyl. Wall. Lastly is there any cracking on the piston. You know which answer is right for each ? If all looks good then sling that puppy back together and have fun.  If something looks wrong to you chances are your right and then rethink your plans. Good luck.Chris __________________ 95 Cherokee SE 4.0, 5-Spd, 8.25; 6.5" Rusty's Lift, Atlas II Rims, 35x12.5x15 Wild Country,Rusty's Tube Bumper, Wilderness Rack Rock Sliders, K&N Panel Air filter, PSC steering box, I-ROK reinforcement kit, ORO U-TURN steering kit,Conversion Headlights/Silverstars And too much $$$ |
|
| |
| 01-29-2007, 09:44 PM | #4 |
Registered User Join Date: Feb 2005 Location: Wolcott, CT Posts: 3,848 | no... dont put it back together, replace the pistons..... looks like detenation issues |
|
| |
| 01-29-2007, 09:44 PM | #5 |
Registered User 1999 XJ Cherokee Join Date: Dec 2005 Location: Jacksonville, Fl. Posts: 4,569 | time for a stroker? __________________ Check out my cardomain site: http://www.cardomain.com/ride/2313036 Current Mods: Bored TB│ TB Spacer│ Homemade air intake│ Dynomax Cat-back│Magnaflow High flow cat│ Full Accel ignition upgrades │Borla Clone Header│Mopar Stage 2 cam │ Transmission Cooler │ Addco front and rear sway bars │Rear Disk Conversion |
|
| |
| 01-29-2007, 09:51 PM | #6 |
Registered User 1998 ZJ Join Date: Aug 2006 Location: chicago Posts: 2,024 | Stroke It! __________________ '95 ZJ.... new DD '98 XJ.... sold '98 XJ.... Sold...(biggest regret) '91 YJ.... Was mine,now dad's DD '94 YJ.... Sold... '95 ZJ.... Sold, '04 TJ.... Mom's DD.....'97 TJ.... Sold |
|
| |
| 01-29-2007, 10:24 PM | #7 |
Registered User Join Date: Nov 2006 Location: Vancouver, WA Posts: 58 | use.. stroking uses a 258 crank?? |
|
| |
| 01-30-2007, 09:47 AM | #8 | |
Registered User 2000 XJ Cherokee Join Date: Sep 2005 Location: Gilbert, Arizona Posts: 4,739 | Quote:
Replace the pistons, and if you don't, you can expect major engine problems shortly after you button that thing back up....... __________________ AZ-Jeff 1992 XJ 2" lift -- RIP 2000 XJ 3" lift -- Australian Ford Big Brakes up front, rock rails, ZJ rear discs (with WORKING parking brake), C4x4 rear bumper/tire carrier, Hella H4 headlights, IPF driving lights, OEM skid plates, OME springs/shocks, JKS LCA's, JKS Sway Bar links. | |
|
| |
| 01-30-2007, 10:02 AM | #9 |
Registered User Join Date: Jun 2006 Location: wilkes-barre Pa. Posts: 1,117 | Thats quite a gouge in the cyl. wall, I depends how deep it is if it can be honed out, fine if not it wont do rings any good or your compression either. If you just want to run it till it stops, I wouldn't waste the money on that engine if you are not going to do something with the gouge, you would be better off with another engine. Or some time in a machine shop. |
|
| |
| 01-30-2007, 10:07 AM | #10 | |
I don't follow the crowd   1998 XJ Cherokee Join Date: Feb 2005 Location: Rocky Hill, CT Posts: 580  | Quote:
| |
|
| |
| 01-30-2007, 10:41 AM | #11 |
Registered User Join Date: Mar 2005 Location: Morrison, CO Posts: 3,379 | Hmmmmm............deff. spark related but I think it could be one of three things. First check your plugs, make sure they are of the correct heat range. A plug that's too hot could slowly eat a piston up. Second, replace your injectors/clean the fuel rail. If the injectors are producing a goofey/lean spray...that could eat your pistons up. Third, double check your rings, if there's a gap...the excaping exhaust gas could eat your piston up...eventually. But I tell you what.....I've seen alot of high mileage 4.0's and 4.2's and yours looks cooked. Cylinder walls are in terrible shape, and your pistons should be much cleaner than that (carbon) no matter how many miles you have on the thing. My 258 looked way better then your pics after 280K...and it's carburated.  You're this far in............atleast hone, re-ring and do the valves.......I think you have massive blow-by.   __________________ Scott-Crawlorado Native I have an addiction..... *00' XJ_T-n-T Y-Link/6" RE_OME's_33" KM2's Tera 4:1 / 4:56's_Elec. Locked D44 **84' CJ7 4"BDS 33's ***02 WJ Overland |
|
| |
| 01-30-2007, 11:46 AM | #12 | |
Registered User 1999 XJ Cherokee Join Date: Dec 2005 Location: Jacksonville, Fl. Posts: 4,569 | Quote:
__________________ Check out my cardomain site: http://www.cardomain.com/ride/2313036 Current Mods: Bored TB│ TB Spacer│ Homemade air intake│ Dynomax Cat-back│Magnaflow High flow cat│ Full Accel ignition upgrades │Borla Clone Header│Mopar Stage 2 cam │ Transmission Cooler │ Addco front and rear sway bars │Rear Disk Conversion | |
|
| |
| 01-30-2007, 12:25 PM | #13 |
Registered User Join Date: Jun 2006 Location: wilkes-barre Pa. Posts: 1,117 | Dont waste you money on that block, unless you plan on haveing the bore cleaned up, if you want to put pistons in that you might as well send me the money, it will do the same thing, you will just be throwing away money. look for a different motor or have that block cut for new pistons, but if you put that back together your looking for trouble, and you will paying for nothing, even used pistons wont help with that gouge in the wall, if it is just melted piston and not a gouge, you can clean it up...other than that.... well its easy to say get another motor with someone elses money,if it has big miles on it you need new pistons anyway, the ring groves are probaly pretty wobley, have someone look at the block, and check the crank, before you spend any money on it, other wise you loose big time...  |
|
| |
| 01-30-2007, 04:22 PM | #14 | |
Registered User Join Date: Feb 2005 Location: Wolcott, CT Posts: 3,848 | Quote:
| |
|
| |
| 01-30-2007, 04:23 PM | #15 | |
Registered User Join Date: Feb 2005 Location: Wolcott, CT Posts: 3,848 | Quote:
| |
|
| |
 |
| Thread Tools | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Jeep Forums | Replies | Last Post |
| Piston Rings | cherokeedon | Cherokee Technical Forum | 7 | 10-03-2007 11:30 AM |
| Piston Misfire | toochez007 | Cherokee Technical Forum | 15 | 03-06-2006 12:18 PM |
| Hole in my Piston? What? | jiipin | Cherokee Technical Forum | 3 | 07-14-2005 05:58 PM |
| bye bye piston ring | n20jeep | Cherokee Technical Forum | 15 | 03-24-2005 08:17 PM |
| piston rings | 97TJ | Cherokee Technical Forum | 1 | 10-03-2002 12:52 AM |
|
«
Previous Thread
|
Next Thread
»
|
