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Old 08-07-2013, 11:16 PM   #1
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Well there goes that...

Sorry for all the posts but tonight I was driving my yj ran fine better then ever was in second gear cause some jerk was going 20-25 mph on a 45 mph road and some guy ran us off the road and jeep shut off and tried to start it and nothing tried to coast start it and nothing tried to start it again and the valve cover blew right off what is wrong...what was wrong it had oil and everything other then the valve cover was plastic and had some cracks in it but the jeep still wont start without it on there what is wrong with it I am about done with cars/trucks

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Old 08-07-2013, 11:33 PM   #2
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The valve cover blew off?! HAHA. well now is your excuse to get an alloy one. I'm guessing you have an '87 like myself? sounds like fumes built up in the engine (gas in the oil) and blew out through the cover. or crank case pressure. but I'm no mechanic.

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Old 08-08-2013, 12:06 AM   #3
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1990 and there's humor in this but I'm pissed beyond belief. And who's bright idea it was to put a plastic valve cover on needs to be slapped for being dumb. Pics

You can see the bolts that are still holding onto the remainder of the valve cover.






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Old 08-08-2013, 01:11 AM   #4
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So the it wasn't turning over so I was going over everything electrical and pulled the spark plus and the second one from the back I found this... piston is trashed im guessing? But it looks like the tip of the spark plug just got shoved up into the glass park or whatever the rest of it is made out of?

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Old 08-08-2013, 07:24 AM   #5
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If the piston made contact with the plug, then it is probably time for a rebuild at least. Something let loose inside there.
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Old 08-08-2013, 12:26 PM   #6
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that's an alloy cover. get a new set of pistons. and rebuild the head
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Old 08-08-2013, 12:35 PM   #7
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Get an alloy*
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Old 08-08-2013, 03:42 PM   #8
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that's an alloy cover. get a new set of pistons. and rebuild the head
Well this is my DD so I am just going to buy a used engine and since I don't have much experience with pistons and all that jazz down there engine swap will be the easier way to go that's what I'm thinking at least.

Q. Would a 4.0 fit in there without any mods?
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Old 08-08-2013, 05:12 PM   #9
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Nope. Lots different, mounts, trans, transfer, wiring, so on and so forth.... Can be done but its not a simple drop in replacement.
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Old 08-08-2013, 05:21 PM   #10
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Alright thought it wouldn't hurt to ask.
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Old 08-08-2013, 11:10 PM   #11
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Found the problem and all the other pistons have metal shavings on top of them.



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Old 08-08-2013, 11:15 PM   #12
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OMG! Sorry man but I have to laugh! I've never seen that before. Well I guess it's safe to say you have some work to do.
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Old 08-08-2013, 11:19 PM   #13
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OMG! Sorry man but I have to laugh! I've never seen that before. Well I guess it's safe to say you have some work to do.
Me either I hope to never see it again knock on wood and yeah I am just going to replace the engine.
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Old 08-08-2013, 11:22 PM   #14
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Me either I hope to never see it again knock on wood and yeah I am just going to replace the engine.
Replace it with a nice clean, no holes, no blown top, Engine. Hope all goes well and keep us updated.
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Old 08-08-2013, 11:25 PM   #15
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Replace it with a nice clean, no holes, no blown top, Engine. Hope all goes well and keep us updated.
Me to especially since this is my first done something this major and I will!
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Old 08-09-2013, 09:54 PM   #16
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Well I got more pics of the damage....







Also my gas tank has been leaking for a little while so while I'm out of a ride for a while I decided to pull it and fix it since money is really tight right now and I'll replace it eventually with a plastic one.



Yes that is gas just from getting it out with out it coming out of the filler or anything else both sides are like that.











And hopefully monday I have a engine to put it.
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Old 08-09-2013, 10:16 PM   #17
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What are you putting in it? put out the extra$ and put a 4.0 and ax15. OR a v8!
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Old 08-09-2013, 10:41 PM   #18
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Don't have the money...I just have the money to put another 2.5 in or I defiantly would.
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Old 08-09-2013, 10:59 PM   #19
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yeah man I hear ya. What are you putting in a rebuilt, used or new?
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Old 08-09-2013, 11:21 PM   #20
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Used one 70xxx miles on it mine had 154xxx
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Old 08-11-2013, 02:44 PM   #21
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Do you have to drain the transmission fluid when you do a motor swap?
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Old 08-11-2013, 02:57 PM   #22
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duct tape fixes everything.
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Old 08-11-2013, 03:13 PM   #23
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duct tape fixes everything.
If I could use duct tape I would but there ain't no way that it would fix this problem.
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Old 08-11-2013, 09:10 PM   #24
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Fixed the gas tank temporarily until I have money to replace it, should I get a plastic one or metal? Also pulled the motor tonight took me like 5 min to pull it and 20 min to set up and it was the only thing I could think of and it worked easily!

All the rust and dirt is off the bottom with this pic but I do not have a pic of it bed lined which is what I did and some jb weld. All this is temporary!


The pull out.




End result!
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Old 08-12-2013, 06:31 AM   #25
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Originally Posted by dguire792 View Post
Fixed the gas tank temporarily until I have money to replace it, should I get a plastic one or metal? Also pulled the motor tonight took me like 5 min to pull it and 20 min to set up and it was the only thing I could think of and it worked easily!

All the rust and dirt is off the bottom with this pic but I do not have a pic of it bed lined which is what I did and some jb weld. All this is temporary!


The pull out.




End result!
Ingenious engine hoist right there.
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Old 08-12-2013, 10:15 AM   #26
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Take this for what it's worth man, but if you are good enough to get the engine out with that much apparent ease you are certainly good enough to do a piston swap/head rebuild.
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Old 08-12-2013, 10:24 AM   #27
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@incizion thanks haha I thought so myself and @Jerricho well I don't have the time and money to do that right now cause I am starting college here soon and I need a ride back and forth.

Q. Would a fuel injected 2.5 work with mine that was set up to be carbed?
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Old 08-21-2013, 10:00 PM   #28
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Finally got a new engine to replace it so hopefully if everything goes to plan it will be in by this Sunday! I'll post more pics also of everything.
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Old 08-26-2013, 11:33 PM   #29
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So the new motor is in after I got it like two days ago and the starter is the only thing that runs and it just clicks opinions to why it wont turn over? And I just plugged the spark plug wires just guessing and I also had to modify two wires leading to the alternator. And I also have no clutch it just goes to the floor....any suggestions? Ill post pics tomorrow of everything.
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Old 08-27-2013, 12:21 AM   #30
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I'm guessing a ground is why it won't turn over, you could also try taking a rubber mallet to the starter while someone else is trying to turn it over. If it turns over, it means the starter is bad. As for the clutch, make sure it has fluid and isn't leaking and try bleeding it if needed. Please forgive me but this thread is the funniest thing I've seen in a while.

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