soa 4 inch springss - JeepForum.com
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post #1 of 37 Old 04-11-2010, 11:07 AM Thread Starter
ausra15
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soa 4 inch springss

i currently have a 4 inch roughcountry lift on my 91 yj and i want to go soa so pretty much what im asking is what do i need for this? i mean i know new perches and high steer knuckles i just want some breifing on what else i need anyhelp would be appreciated also what tire size would go best. i am not worried about cost i want this done the right way. and i know i have to get a sye but what kind of driveshaft will i need and what about the front drive shaft and can it be done with the stock axles i know they will end up breaking. i just want to know my best route. thanks guys.


1991 wrangler yj
HO 4.0
4"rc 2" shacles
32" MTR's
diamond plate rockers
custom chrome bumper red diff covers and a ton of lights
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post #2 of 37 Old 04-11-2010, 11:09 AM
Allen52105
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a SOA will net you about 6-7" of lift overall. the cost to "DO IT RIGHT" is alot more then doing say a 5" SUA and a 1.5 body lift

jason
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post #3 of 37 Old 04-11-2010, 11:37 AM
JeeperDon
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An axle under 4" springs is WAY too tall to be practical. For starters, get a much flatter spring. I went with the 1.5" RE SOA designed springs and could easily prefer an inch shorter.

'93 YJ, '02 GM 4.3V6, SOA, dual ARB's, 8.8+D30(WarnHubs), 4.88s, 35" BFG KM2s, AX15, NP231+4:1+SYE+2LO, York OBA, Warn M8000.
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post #4 of 37 Old 04-11-2010, 11:49 AM
Allen52105
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Quote:
Originally Posted by JeeperDon View Post
An axle under 4" springs is WAY too tall to be practical. For starters, get a much flatter spring. I went with the 1.5" RE SOA designed springs and could easily prefer an inch shorter.
exactly..... you would be sitting on about a10" lift w/ 4" springs on a SOA conversion WAY TOO TALL

jason
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post #5 of 37 Old 04-11-2010, 08:05 PM Thread Starter
ausra15
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really wow just looking at mine now i never would have thought 5.5 more inches would make it that much different. do my best bet would get like stock springs and then do it?

1991 wrangler yj
HO 4.0
4"rc 2" shacles
32" MTR's
diamond plate rockers
custom chrome bumper red diff covers and a ton of lights
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post #6 of 37 Old 04-11-2010, 08:10 PM
CoverinEarth
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I saw do what makes YOU happy. and what works in YOUR wheeling area.

Im sitting on 3ish" Springs SOA on 37's. I DD the Jeep and it gets wheeled. Hard.

The questions you need to ask are. What size tires do you want to run? What kind of wheeling do you do? What will work with your pocket book? Plan for bigger axles for bigger tires.

Heres how i roll:

**Daily Driven**
My 94 YJ, SOA, 100" WB,37" MTRs on 15" Eaton 32Bolt Beadlocks
March 2009 JF YJ Of The Month
JeepFest 2009 Runner-up Best of Show YJ
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post #7 of 37 Old 04-12-2010, 07:40 AM
highrolrcustoms
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mine is sitting at 12"s and 37x13.50s and i love it!!!!!

95 yj juggy, backhalfed, 3 link front with 16" fox dual rate remote resi coilovers, 4 link rear with 16" fox air shocks, Monster Stak 2 Speed transfer case 4.33:1, full width ford 78/79 dana 60hp front axle with 538 gears and full spool, ford sterling 10.25 full width rear axle with 538 gears welded and disc brake conversion, 42x15 swamper tsl's on 15x8 Allied wheels 3.5" backspacing with DIY beadlocks, High Steer with 1.5x.250 dom tubing, Full Hydro steering, custom cage, rci 2161a fuel cell ,smitty xrc 8 winch, cv driveshaft, jk motor mount lift, racing seats with simpson 5 point harnesses

http://www.jeepforum.com/forum/f12/3...begun-1108933/


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post #8 of 37 Old 04-12-2010, 08:17 AM
Area.3.Fiftyone
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Running anything over a 35" tire on a D30/D35 combo is just asking for trouble.

79' CJ7 - 82' CJ8 - 94' YJ - 96' ZJ
Diagonally parked in a parallel universe.......
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post #9 of 37 Old 04-12-2010, 08:25 AM
CoverinEarth
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Im running 37's on my D30.

**Daily Driven**
My 94 YJ, SOA, 100" WB,37" MTRs on 15" Eaton 32Bolt Beadlocks
March 2009 JF YJ Of The Month
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post #10 of 37 Old 04-12-2010, 07:30 PM Thread Starter
ausra15
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see ive been told 33s on the d35 would blow it apart and i had 33x15.5x15 super swampers on 15x10 steel rims with the d35 and i spun a numerous amount of time and have had no problems with it but i do keep up on the mantinence. so is it some ppl just get lemons or is everyone exagerating the d35 problems?

1991 wrangler yj
HO 4.0
4"rc 2" shacles
32" MTR's
diamond plate rockers
custom chrome bumper red diff covers and a ton of lights
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post #11 of 37 Old 04-12-2010, 07:32 PM
green89yj
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bump and bookmark. I want to see where this goes because I basically want to run the same setup.

Build
Herc.Custom Green paint. RC 4". 5 Goodyear 33X12.5 MT/R w/Kev. Cragar V5's. Corbeau Moab seats. Optima Yellow.XRC8 Comp Winch. XJ 4.0/AX15
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post #12 of 37 Old 04-12-2010, 07:56 PM
ssyj94
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You guys are tempting fate with your big tires and a rear 35. I've blown 2 axleshafts with 33's, one friend snapped his pinion with 235's, another broke numerous shafts on 35's and yet another broke R&P with 33's. Im not even counting the amount of spider gears that have been broken. But thats besides the point.

ausra15, what size tires do you want to run, are you locking the axles and what type of terrain?
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post #13 of 37 Old 04-12-2010, 08:19 PM
CoverinEarth
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did i say i was runnign a D35 rear though? No. I simply said 37's on a D30. Yeah, its a rather built D30, but it is holding up. And i am a fan of the skinny pedal.

Although i did run 35" Bajaclaws on my old YJ with a WELDED D35 in the rear. It was a trailer only rig that got hammered on all the time. Only problem i ever had was i spun the tubes.

-Nick

**Daily Driven**
My 94 YJ, SOA, 100" WB,37" MTRs on 15" Eaton 32Bolt Beadlocks
March 2009 JF YJ Of The Month
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See Dan at RuffStuffSpecialties for all your Fabbing needs!
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post #14 of 37 Old 04-12-2010, 08:48 PM Thread Starter
ausra15
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i plan on running 36 or 37 but i also plan on switching to the 8.8 or a d44 shortly after the conversion my terrain is mainly mud and water some hills but no rockcrawling i also have a buddy with the d35 on 33s locked and he muds the ***** out of it everyweekend. me and him normally run together and neither of us have had problems yet. and im not saying you guys are wrong im just sayin that i have not had any problems with mine.
and ssyj94 i do plan on locking the front and rear but i wont do the rear till i have my other rear end.

1991 wrangler yj
HO 4.0
4"rc 2" shacles
32" MTR's
diamond plate rockers
custom chrome bumper red diff covers and a ton of lights
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post #15 of 37 Old 04-12-2010, 09:06 PM
ssyj94
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CoverinEarth i wasnt refering to your comment.

I'd say wait till you have the 8.8 or 44 and not have todo the rear twice. SOA on 4" springs is goin to be pretty tall for 36's id go with stock or 1.5"-2" springs max and some chopped fenders. If your on a tight budget maybe add a 1" bodylift highline your front fenders and chop your rears up to the bottom of the rear wheelwell and leave it sua. Figure what you wanna do and start collecting parts, theres alot of options its more what you can afford.
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