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post #331 of Old 09-20-2013, 10:11 AM
bmgadg
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Originally Posted by skyj View Post
Sweet thanks. I need a schematic of a '93 grand cherokee and hopefully I can identify where they go. Does anybody know where to get these?
I ponied up for 2 sets of service manuals I found on ebay. One set for the yj and one set for the donor vehicle. I think you can buy electronic versions on there too, but be careful who you buy from. It might end up being a scanned copy of a Haynes manual or something like that.

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post #332 of Old 09-20-2013, 10:38 AM Thread Starter
skyj
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Originally Posted by bmgadg View Post

I ponied up for 2 sets of service manuals I found on ebay. One set for the yj and one set for the donor vehicle. I think you can buy electronic versions on there too, but be careful who you buy from. It might end up being a scanned copy of a Haynes manual or something like that.
My father-in-law works at what used to be a jeep/Chrysler dealership as a service manager now strictly GMC, but most of the mechanics that were jeep mechanics are still there and I bet might still have those manuals I just need to ask them if I could borrow them.

build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #333 of Old 09-21-2013, 08:05 AM Thread Starter
skyj
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How my garage started yesterday. Im actually embarrassed to admit it.


Halfway through the day.

Then I took my motor to the car wash and pressure washed it clean. After that I tried to install it on my suppossed "v8 engine stand" which just bowed under the weight haha. So I took it apart and beefed up the backing plate, since that was bending.




Ahhhh!!! Much better.

Then by the end of the day it looked like this. Still lots left to do and organize and once I sell all my 4.0 stuff I will gain some real estate back on my top shelf it was a very productive day.

build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #334 of Old 09-21-2013, 02:39 PM
Hoxie
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Dang! Your engine is looking clean. I need to get mine all cleaned up!
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post #335 of Old 09-21-2013, 02:57 PM Thread Starter
skyj
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Dang! Your engine is looking clean. I need to get mine all cleaned up!
Yeah I feel much better now that it is clean. The oil pan is caked still, I will get that when I pull it then I can clean it inside and out. Now just trying to figure out how to do a compression test without a bellhousing and flywheel to bolt a starter to. I wonder if I can crank it over by hand and get a good reading.

build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #336 of Old 09-21-2013, 04:12 PM
lar308
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Do a cylinder leak down test, More accurate and more information than a compression test. Ron
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post #337 of Old 09-21-2013, 08:34 PM Thread Starter
skyj
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Do a cylinder leak down test, More accurate and more information than a compression test. Ron
True that would be a good way to tell if the motor is in good shape all around.

build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #338 of Old 09-22-2013, 12:25 AM Thread Starter
skyj
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So I got a little more tore off the motor tonight. Started by taking of exhaust manifolds that went real easy, except for the egr tube bolt broke off in the manifold, I hope I can do an egr delete???



all valves look fine.

Removed valve covers they look fine also, rockers look good.

All spark plugs look the same also.

Thats all for the night need to borrow my buddies leak tester and hopefully this motor will be in good enough shape to not have to remove heads and rebuild (crossing fingers).

build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #339 of Old 09-25-2013, 02:38 PM
bmgadg
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Originally Posted by skyj View Post
So I got a little more tore off the motor tonight. Started by taking of exhaust manifolds that went real easy, except for the egr tube bolt broke off in the manifold, I hope I can do an egr delete???
My engine was a 96 model and didn't have an egr. I just left that plug from the harness hanging and I never had any trouble. Not sure how I pulled that one off though.

You should be able to delete it and not have any issues.
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post #340 of Old 09-25-2013, 02:52 PM Thread Starter
skyj
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Originally Posted by bmgadg View Post

My engine was a 96 model and didn't have an egr. I just left that plug from the harness hanging and I never had any trouble. Not sure how I pulled that one off though.

You should be able to delete it and not have any issues.
Well that makes me feel better since there is about a mile of vacuum hose that goes with the egr crap and most of it is broke off or just plain gone. I also spied some block hugger headers off an ol dodge truck in a salvage yard when I was there last so I may just ask about them and see what they will $$$ cost me.
Since I'm typing I was thinking about using the Cherokee style motor mounts and just making me some brackets to weld to my frame just wondering if anyone has used them an how they made theirs work?

build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #341 of Old 09-25-2013, 09:01 PM Thread Starter
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So my buddy came by with his leak tester.... and we are not sure what to think every time we hooked the gauge up it would go all wacky and jump around. You could hear some slight leaks coming through the intake but not bad.... soooo plan B now is I think I can rig up a way to crank over the motor with my power drill just chuck up a socket and hook her up to the crank and turn it over, should turn it over just as good as the starter could then we can do a compression test and see if the rings are shot. Should work right?? My last plan before I tear this bugger apart and rebuild it which I dont want to have to do just yet. In the meantime Im thinking I will take the oil pan off my 4.2 and check my main and rod bearings to see if I spun one... or two

All the while tryin to come up with enough cash to start my new business. Ugh

build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #342 of Old 09-26-2013, 03:30 PM
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Did he bring the cylinder up on TDC? What percentages did he get? Ron
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post #343 of Old 09-26-2013, 03:56 PM Thread Starter
skyj
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Did he bring the cylinder up on TDC? What percentages did he get? Ron
It was bad we had it at TDC compression stroke and it was showing 80% loss on all cylinders. We rocked the crank back and forth and tried to get it to jump up and it never got better. I used my drill to try and simulate the starter turning it over


bout burnt up my drill it never really got it to turn over very good but the gauage would top out with all cylinders reading 60 psi. So either we are doing a poor job at testing this motor or its really really tired. Might be time for a rebuild.

build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #344 of Old 09-26-2013, 04:31 PM
Hoxie
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Hope its just bad testing...
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post #345 of Old 09-26-2013, 05:08 PM Thread Starter
skyj
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Hope its just bad testing...
Yeah me too, there is some reassurance in that all tests were consistent. Both showed the same psi for all cylinders. but at $150 you get what you pay for even if I have to rebuild it. I wont be that bad off at least the motor will be fresh if I do rebuild it I most likely wont go to crazy with the build probably just do new rings, bearings and gaskets.
I will most likely tear into the 4.2 now also and find its knock and hopefully be a cheap fix so I can get some money out of it to put towards this swap. Good news is I found a source for a bellhousing, may take them a few weeks to track one down for me but he said $75 for one so I'm stoked.

build thread: http://www.jeepforum.com/forum/f22/skyj-eccentric-build-1467426/ '90 YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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