swirlytwirlys Posted September 14, 2012 Share Posted September 14, 2012 hey just bought a 1987 comanche long bed, metric ton, 4.0 4x4 5spd p a shjot transmision! was looking at putting a iron rock offroad 5.5" critical path long arm on talked to the guys very cool.... just wandering how much lift can you put on comanches before i need a sye and a new drive shaft?? and if i do need that whats the most efficient route? thanks hope i get some good feedback!! Link to comment Share on other sites More sharing options...
Pete M Posted September 14, 2012 Share Posted September 14, 2012 it's always a good strength upgrade :thumbsup: , but isn't really needed in an MJ until 6+, and even then some guys don't have them. we have a much longer wheelbase than wranglers and cherokees and so we don't suffer the sharp driveline angles that they do. but you will want a longer driveshaft at 4+. unless you upgrade the rear axle (which I highly recommend if you want big tires), which the new axle will have a longer snout on it and so balance out the height. what are you doing for gears and axles? oh, and welcome to the club! :waving: Link to comment Share on other sites More sharing options...
swirlytwirlys Posted September 14, 2012 Author Share Posted September 14, 2012 i have a 8.25 right now.... i would like to go 5.5" or 6.5" of lift long arm. i would def upgrade my axle to a 8.8 and def regear depending on which tire size i go with 33's or 35's my brother wants me to put the 6.5" on with 35's since i got the truck cheap and is not my daily driver what options do i have with the rear driveshat? as far as junkyards or is that not a option??? thanks for ur input new to the comanche world... Link to comment Share on other sites More sharing options...
Pete M Posted September 15, 2012 Share Posted September 15, 2012 fwiw, 33s are less of a headache and only lose 1" of ground clearance vs 35s. :thumbsup: I don't know of any junkyard options to gain an inch on 4.0/stick rear driveshaft. :dunno: Link to comment Share on other sites More sharing options...
swirlytwirlys Posted September 15, 2012 Author Share Posted September 15, 2012 so if i put a 5.5" lift on with 33 i wouldnt have to put a sye on? Link to comment Share on other sites More sharing options...
mvusse Posted September 15, 2012 Share Posted September 15, 2012 I have roughly 8" of lift in the rear of my lwb. I'm not anywhere near needing a SYE yet. Also, if that 8.25" has 29 spline axle shafts, I wouldn't bother upgrading to an 8.8. I run a 29 spline 8.25" with 35" tires, and for the last year and a half with a lunch box locker. Even doing a rear wheelstand while the axle was hopping didn't damage it. It did break my driveshaft, though :oops: AFAIK, Iron Rock Offroad does not make anything Comanche specific, so I'm guessing you're getting the Cherokee kit. All the front stuff will work, the rear will not. Instead, do a SOA swap in the rear. The back will probably sit a bit higher than the front, but that all depends on how badly your leaf springs have sagged over the years and how tall the 5.5 front spring really are. Most people pair up a rear SOA with 6.5" front lift. You will need a longer rear driveshaft., Link to comment Share on other sites More sharing options...
swirlytwirlys Posted September 15, 2012 Author Share Posted September 15, 2012 ok yeah i talked to the guys from iron rock offroad and they told me they can take the springs out and cut the price..... the 8.25 i have is out of a 2001 cherokee havent pulled it apart yet to see what splines it has.... this is at least what the guy i bought it from told me..... I'm gonna go soa in the rear so u would recomend the 6.5" in the front??? no sye?? and where do i get a longer driveshaft? thanks Link to comment Share on other sites More sharing options...
Geonovast Posted September 15, 2012 Share Posted September 15, 2012 97 - 01 XJ 8.25 will be 29 spline shafts. Link to comment Share on other sites More sharing options...
Zebvance Posted September 15, 2012 Share Posted September 15, 2012 ok yeah i talked to the guys from iron rock offroad and they told me they can take the springs out and cut the price..... the 8.25 i have is out of a 2001 cherokee havent pulled it apart yet to see what splines it has.... this is at least what the guy i bought it from told me..... I'm gonna go soa in the rear so u would recomend the 6.5" in the front??? no sye?? and where do i get a longer driveshaft? thanks I plan on doing their 6.5 long arm on my mj. I just wanted the front part also. What did they quote you out for the front part and which shocks did you chose and did you upgrade to the quick disconnects? Link to comment Share on other sites More sharing options...
swirlytwirlys Posted September 15, 2012 Author Share Posted September 15, 2012 I havent ordered it yet but i think they knock off like 250$.... not sure what shocks i want Link to comment Share on other sites More sharing options...
Gibby Posted September 16, 2012 Share Posted September 16, 2012 I had the doesch techs on my xj and loved them. Built in bump stops on the shocks. The ones I had were set up for 4" of up travel and 14" of down travel if I remember correctly. Link to comment Share on other sites More sharing options...
Pete M Posted September 16, 2012 Share Posted September 16, 2012 the more you spend on shocks, the better they are. :thumbsup: Link to comment Share on other sites More sharing options...
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