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Old 02-07-2017, 01:43 PM   #1
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what tranny do I have

Well it turned out to be a ba/10 with a NP231 T/C, and the transfer case is what threw me off, Seems some one changed that out,
Any way just as I was about to quit looking, I stumbled across an a item in Craigs List 87YJ drive train for sale $800. bucks AX/15 tranny, recently rebuilt,
NP231 T.C. with a new slip yoke eliminator and wide chain, all the linkage and such, 3 Heavy Duty custom drive shafts with double U-Joints, I had to put a 2" drop on the transfer case to make the 4' shaft fit, So I guess I need to lift it 4"!?!? The frontend has heavy duty axles, and what looks like heavy duty everything else, rear end just rebuilt by jasper, both complete with good brakes, and a motor with only 37k on it, he said he thought it's a 4.2,
But when I had the tranny swapped over they said it had a 4.0 shaft in it, so I don't know!? so now I got a Stock NP231 T/C ,Stock Dana 35 Frontend Stock Dana 35 rear end , and BA/10 Tranny, 5 Stock 15 inch mags, with Wrangler tires at half life, I guess I should open a used parts shop.
I've bought an add a leaf set up for all 4 corners, with shackles, and bushings,4 new Mammoth 16"X8 wheels, an 4 Nexen 265/70/16 AT's Before I found these parts so This has changed my plans up a little
Don't know where I'm gonna end up with my lift so it's all by ear right now! The new axle tubes are set up to go over or under the spring's with 1" mounting blocks on both top and bottom, I know I'll need more parts like a drag link, and shocks but I think I've got most of what I need(Famous last words) I'm open for suggestions if any body has any Thanks to those of you who's helped so far!!
SportsterRick1st
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Old 02-08-2017, 12:52 AM   #2
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You killed it Rick!! Way to go.

I guess that deal would change the way you are planning to go with your Jeep.

Is the motor you bought carbureted. Does it have a fuel pump on the passenger side of the block (or at least a fuel pump block off plate)?

You will have to compare bore and stroke of a 4.2 with the bore and stroke of a 4.0 to see what your actual displacement is.

From what I understand a 4.0 block with a 4.2 crank is what most stroker motors are.
If you have a 4.2 block with a 4.0 crank, well, I dunno. What makes them say you have a 4.0 crank?

Good Luck, L.M.

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1987 YJ-4.2L-Standard Shift- Re-manufactured Carter Carb-2" body Lift-31X10.5X15 BFG KOs-188K Miles
HEI distributor with computer and all related relays and wiring removed.
No back seat.
12K Badlands winch with dual batteries.
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Old 02-08-2017, 05:28 PM   #3
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what tranny do I have

Thanks Luckymac
The motor is carbed and has a fuel pump on the pass. side, painted gray, last 3 #on the block are 444 if that means anything, It's pretty clean so I believe the guy about the miles, It was a 1987 that it came out of but that don't mean much,
Guess I'll find out more when I swap it , but that's gonna be down the road, I'll run this one till it blow's or get's real tired. Or when I get a bug up my ass, Which can happen after a few beers with a gearhead bro
It happens!
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Old 02-08-2017, 05:32 PM   #4
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what tranny do I have

Hey Luckmac
How do you like that 12k Badlands winch! I'm thinking of buying one, Ive got a killer coupon.
Thanks again
SprotsterRick
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Old 02-08-2017, 07:33 PM   #5
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As I stated, I haven't had the need to use it yet. For $289.00 I figured it was worth taking a chance. It certainly seems robust. I gooped the electrical connections up with dielectric grease.

I also bought the Harbor Freight winch mount plate. It was $45.00 on sale at a different time.
Naturally the winch bolts right up to it, but I had to drill two large holes in the top of my Warn front bumper to allow the bolts that attach the winch to the plate to fit.
The HF winch plate requires that the installer open up two of the holes so that the plate will bolt to the top of the frame. I used a carbide bit in my die grinder. It didn't require a lot of grinding.
In hindsight, If I could have found a mount plate that was a direct fit for just a little bit more money, that's what I should have done. If you have a winch bumper, you are already set to go.

Grade 8 bolts all around. Anything else is asking for trouble.

In my signature I refer to dual batteries. I have a 100A. Battery Dr. battery isolator so that the winch doesn't drain my main battery.

Good Luck, L.M.
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1987 YJ-4.2L-Standard Shift- Re-manufactured Carter Carb-2" body Lift-31X10.5X15 BFG KOs-188K Miles
HEI distributor with computer and all related relays and wiring removed.
No back seat.
12K Badlands winch with dual batteries.
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Old 02-09-2017, 11:15 AM   #6
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what tranny do I have

I really like your two battery Idea, Smart move! where did you place your 2nd battery, and how did you wire it up? I saw the Dr isolator, I have one from my boat I can use, I imagine it's not much different than my boat as it has 2 batts, Right now I only have a stock bumper that I chopped by 45ing the ends it looks pretty good but I doubt it has the balls for a winch, extreme terrain has a nice one for $199.00 'Rock crawler" But 5/16ths don't sound strong enough to me, But I'm a newb so I don't know?,
I'm willing to up grade to something more meaty, Like every one I don't want to spend a bunch of doe but I'd hate to need it and have it fold up like a tin can! I'd appreciate your thoughts on that one!?!
Thanks a lot L-mac
Rick
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Old 02-09-2017, 11:21 AM   #7
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5/32nds not 5/16ths my mistake, I wish it were 5/16ths
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Old 02-09-2017, 04:41 PM   #8
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I got my dual battery tray from Quadratec. I'm sure other vendors have the same or similar. I had to modify my right fender apron a bit with a BFH in order to get the bolt holes to align and then drill a hole in the apron to install the second bolt.
The tray itself is quite sturdy. I had to move my 4 wheel drive switch a bit but all in all I am happy with the installation.

$200.00 doesn't sound like enough for a winch bumper. I would plan for at least double that amount. Morris has a Body Armor winch bumper that looks good for $457.52 with free shipping. The winch plate is 1/4".

Good Luck, L.M.
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1987 YJ-4.2L-Standard Shift- Re-manufactured Carter Carb-2" body Lift-31X10.5X15 BFG KOs-188K Miles
HEI distributor with computer and all related relays and wiring removed.
No back seat.
12K Badlands winch with dual batteries.
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Old 02-10-2017, 11:14 PM   #9
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This is how I mounted my Badlands . The top plate is 3/8 plate. Made my one mounting bracket.
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Old 02-12-2017, 10:32 AM   #10
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what tranny do I have

WOW!! NICE job mule great Idea It's funny we both 45d our stock bumper ends
I think it's a vast improvement thanks for your pics, I'm going to post in the tec
from now on there seems to be more jeepers there, my next post will be
steering column quest, please check it out
thank a lot
Rick

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