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ZJ 5.2L Rebuild

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 Post subject: ZJ 5.2L Rebuild
PostPosted: March 9th, 2014, 7:36 am 
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Location: Bakersfield CA
So my ZJ just spun a bearing, I am going to be doing a performance rebuild on it. I will me putting a stroker kit, mild cam, new heads, and all new valve train. I would appreciate, and input, thoughts, and recommendations. thank you and wish me luck.
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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 9th, 2014, 7:38 am 
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The bearings. :oops:


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 9th, 2014, 8:14 am 
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Damn! No good at all.

Keep us up to date on the progress. I would like to see the process.

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 9th, 2014, 3:39 pm 
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Is it worth all the $$ and work or just put a used engine in it? I know a guy that might have one. (Me)


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 9th, 2014, 7:25 pm 
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Zak.Taylor wrote:
Is it worth all the $$ and work or just put a used engine in it? I know a guy that might have one. (Me)


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I like to tackle projects like this plus we can always use more power right. :stirPot:
What year is ur engine and how much $$ are u asking.


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 12th, 2014, 11:57 am 
I work to support my 4X4!

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It's a 93, with 135k miles. I'd want like 500 for engine, trans, t-case (np231 swap). I'd have to pull it all from my YJ.


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2013 Jeep JKUR on 35" Kanati Trail Hogs, 2.5" Rough Country coil lift
2006 Yamaha Rhino 660 on 28" BajaCross, with winch.
2008 Dodge Ram 2500 6.7 CTD leveled with 20's and 35's.
Some boom toys here and there too.


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 13th, 2014, 7:46 am 
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I'll take it Zach

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 13th, 2014, 1:21 pm 
I work to support my 4X4!

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Lol when you want it? Gotta help me put the 350/700r4/np208 in the YJ after


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2013 Jeep JKUR on 35" Kanati Trail Hogs, 2.5" Rough Country coil lift
2006 Yamaha Rhino 660 on 28" BajaCross, with winch.
2008 Dodge Ram 2500 6.7 CTD leveled with 20's and 35's.
Some boom toys here and there too.


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 13th, 2014, 2:59 pm 
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That won't fit we've tried that

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 13th, 2014, 3:24 pm 
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With 6" stretch? What wouldn't fit?


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2013 Jeep JKUR on 35" Kanati Trail Hogs, 2.5" Rough Country coil lift
2006 Yamaha Rhino 660 on 28" BajaCross, with winch.
2008 Dodge Ram 2500 6.7 CTD leveled with 20's and 35's.
Some boom toys here and there too.


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 14th, 2014, 7:04 am 
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Are you stretching the the rear axle? Were were going to do the same thing with the race jeep and we already stretched it the rear 4 to 6 inches and it still didn't fit. Only solution we had was to shift the whole drive train forward and move the radiator to the rear.

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 14th, 2014, 7:06 am 
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But we're thinking what's best for the race. We didn't want the drive line at to much of an angel.

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 14th, 2014, 8:13 am 
I work to support my 4X4!

Joined: September 1st, 2011, 7:31 pm
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Maybe a turbo 350 would fit better? I don't need OD anyway.


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2013 Jeep JKUR on 35" Kanati Trail Hogs, 2.5" Rough Country coil lift
2006 Yamaha Rhino 660 on 28" BajaCross, with winch.
2008 Dodge Ram 2500 6.7 CTD leveled with 20's and 35's.
Some boom toys here and there too.


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: March 23rd, 2014, 8:10 pm 
I work to support my 4X4!

Joined: October 5th, 2010, 10:53 am
Posts: 943
What stroker kit is going in the 5.2l?

Also what was cause of spun bearing, curious if it was miles, oil pump failure or starvation from running at extreme angles.

Oh and what camshaft and rockers are you going with?

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: April 1st, 2014, 4:04 pm 
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I decided not to go with the stroker due to $$ issues. But it was a Campbell enterprises kit.

The cam I found is a comp cam, they describe it as a oem with increased torque. Part Number is 20-608-9. And I'm still looking at roller options.

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: April 1st, 2014, 4:05 pm 
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Also it was dirt in the oil pan that clogged the intake "previous owner did not take care of it"

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: April 1st, 2014, 6:38 pm 
I work to support my 4X4!

Joined: October 5th, 2010, 10:53 am
Posts: 943
Ahh ok, the engine failure makes me feel better about my swap.

Going with any headers or using stock?

I have started a ton of research on this motor...most on the Internet's say if using an aftermarket cam to use stock 1.6 ratio rockers but to get the roller style.

Apparently if you use the 1.7ratio rollers and an aftermarket cam will get too much lift and possibly not be able to tune engine for the combo

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: April 1st, 2014, 8:27 pm 
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Ya.
I'm going with the stock manifolds to keep it smog legal but I'm going to ceramic coat them.

I was leaning towards getting the 1.6 rollers as well. But I'm also going with aluminum heads.

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: April 7th, 2014, 6:20 am 
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Here is the progress i made over the weekend.
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PS. Wish i could have made it out to the newbie ball and chain run.


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: April 12th, 2014, 11:26 am 
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New paint. Image

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: April 13th, 2014, 12:24 am 
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Looks good! Does the shock top help hone the cylinders?

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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: April 13th, 2014, 11:06 am 
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Thank you. Haha ya I was using it as assembly lube. ;)


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: April 29th, 2014, 12:04 pm 
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So i have the tranny out with the engine.

it had a small leak on some of the seals, so would it be better to just to a exterior seal kit 200$, or a full rebuild 900$.
there is 160000 miles on the tranny.

Thank you for the input.


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: May 3rd, 2014, 10:56 am 
I work to support my 4X4!

Joined: September 1st, 2011, 7:31 pm
Posts: 704
Find a rebuilt for under 900 if possible if u plan to keep the zj


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2013 Jeep JKUR on 35" Kanati Trail Hogs, 2.5" Rough Country coil lift
2006 Yamaha Rhino 660 on 28" BajaCross, with winch.
2008 Dodge Ram 2500 6.7 CTD leveled with 20's and 35's.
Some boom toys here and there too.


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 Post subject: Re: ZJ 5.2L Rebuild
PostPosted: May 13th, 2014, 7:05 am 
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And after 4 months Black Betty is on the road.
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