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Unread 04-10-2014, 09:40 AM   #1
Cobrajet94
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cobrajet94's YJ build

Finaly starting a build thread for my 1992 yj 2.5l. This is my first vehicle having it myself for almost 3 years. My dad got it in 04' drove it for a year or two and used it as a shop truck untill i got my license in 2011. Since then its changed a little.

Here's a little bit about myself. Im 19 recently graduated Lincoln tech in Connecticut for automotive mechanics. My father owns a automotive shop on long island that me and him run. Prior to starting my YJ build me and my father built a 1948 CJ2A my last two years in high school. Restored it to somewhat stock we added our touch here and there. Its sitting on 31x10.5 iroks.

Enough with the chit chat this is what you have come for:

Heres a list of things ive already done
3.5 fabtech springs
James duff front shocks
F350 front shock towers
Rough country rear shocks
Crown extended brake lines
Barnes 4wd front bumper

Whats to come next week:
Ford 9" rear 31 spline
9"front currie housing with d44 inner c's
Inner chromoly shafts
Ford d44 knuckles/brakes etc.
Detroit lockers f/r 4.86 gears
Ruff stuff y link 1 ton steering




current picture:



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Unread 04-11-2014, 01:15 PM   #2
Cobrajet94
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ive had a lot of parts sitting around waiting to be installed lol ive come to realize it takes a while to plan and build a jeep

currie 9" front housing custom built to a 65.25" wms



Detroit lockers and 4.86 gears

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Unread 04-11-2014, 02:01 PM   #3
Louie4
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You had me at 9" front custom built.
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Unread 04-11-2014, 03:49 PM   #4
Deepsouth
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That looks cool. Is the 9"" front going to be high pinion or low?
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Unread 04-12-2014, 09:13 AM   #5
Cobrajet94
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Quote:
Originally Posted by Deepsouth
That looks cool. Is the 9"" front going to be high pinion or low?
For now low pinion but eventualy im going to get a hp third member
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Unread 04-12-2014, 03:47 PM   #6
lovett86
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cool jeep
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its a rusty one

http://www.jeepforum.com/forum/f22/90-yj-frame-swap-build-up-1434246/
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Unread 04-12-2014, 06:10 PM   #7
Cobrajet94
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flex shot from a couple months ago. not much but good for sua 3.5" springs



last weekend wheeling i stuffed my 31s into the fenderwell. i was supprise that i could get the tire that far up!

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Unread 04-14-2014, 09:59 AM   #8
Cobrajet94
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Brown santa brought some presents! My ruffstuff 1 ton y-link steering and the axle mounts and pinion guards from barnes 4wd came this morning

I also picked up 3rd member for the front axle from my friend for 50 bucks.

I ordered 35x12.5 goodyear mtrs they should be here in a couple days. Ill need to do some trimming to the flares so they dont rub too much
image-3902856985.jpg

image-879736818.jpg

image-1442236892.jpg

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Unread 04-14-2014, 10:06 AM   #9
Cobrajet94
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This third member has 3.50 gears and an open diff and a 1330 yoke. The other 3rd is the same but it has 1310 yoke. Im using stock shafts (1310), Luckily my dad had two yokes for a 9" laying arround. One is a 1310 and its a long yoke, hopefully it will help with my rear driveshaft being stock and short
image-221359184.jpg

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Unread 04-15-2014, 10:02 AM   #10
Cobrajet94
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So i started to tackle regearing and installing the lockers. So far i have gotten one third member disassembled, pinion installed and preload set.

I plan on finishing both today
image-3392100861.jpg

image-1721431466.jpg

image-2455465875.jpg

image-435102604.jpg

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Unread 04-16-2014, 05:57 PM   #11
Louie4
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Is the preload and backlash set separately on the third members? It appears they are but I have never set up gears in them.
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Unread 04-17-2014, 10:08 AM   #12
Cobrajet94
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Quote:
Originally Posted by Louie4 View Post
Is the preload and backlash set separately on the third members? It appears they are but I have never set up gears in them.
pinion preload is the pressure on the bearings on the pinion, backlash is the amount of movement between the ring gear and the pinion gear when the pinion gear is held in place.

this is my first time setting up gears in a 9" its very simple compared to a dana 44 that I set up while I was in school.
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Unread 04-17-2014, 10:19 AM   #13
Cobrajet94
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For my first time setting up my gears and lockers id say i did good. I set the backlash to .007 and firured i needed a .015 pinion shim. Gear pattern checked out perfect! Now i need to setup the rear 3rd member.

My 35x12.5 goodyear mt/r's came in today!
image-2940379519.jpg

image-3205752094.jpg

image-1125022801.jpg

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Unread 04-17-2014, 05:45 PM   #14
Cobrajet94
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mounted my new tires up today jeep. im going to build the second third member tonight and Saturday the axles will get mocked up, mounts welded and mount everything up. all my brake parts came and will be setup after the axles are mounted



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Unread 04-17-2014, 08:50 PM   #15
Louie4
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Quote:
Originally Posted by Cobrajet94 View Post
pinion preload is the pressure on the bearings on the pinion, backlash is the amount of movement between the ring gear and the pinion gear when the pinion gear is held in place.

this is my first time setting up gears in a 9" its very simple compared to a dana 44 that I set up while I was in school.
I understand that. It just seems like one doesn't affect the other on the 9" unlike non third members. Seems simple enough though.

Keep up the good work.
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I have a jeep...and it is modified...I win.

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