flex j 3 link
02-17-2011, 12:21 AM
#1
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Model: Cherokee
flex j 3 link
i wanted a newer, better front suspension. i turned a lot of thoughts in my head and have been reading thru a ton of link and suspension threads on pirate. i decided a 3 link was the way to go since it offers great unbinding flex and can be easier than a 4 link to do. so here goes
lowers:
2x.250 dom
RE large super flex joints for the frame
poly at the axle for now
lowers in the area of 30" eye to eye
upper:
1.5x.120? havent gotten this far yet
rock krawler dana 30 build-a-joint at axle
3/4 or 7/8 hiem at frame?
a lot of talk about longer or shorter upper, depends what you want to do. im thinkin the upper will be an inch longer than the lower.
with 8+ inches of separation at the axle and right around 4 inches at the frame end my pinion should stay pointed at the tc thru the entire cycle.
drop brackets and short arms gone, finally
no goin back
tabs and links
mock up 2 days ago
lowers:
2x.250 dom
RE large super flex joints for the frame
poly at the axle for now
lowers in the area of 30" eye to eye
upper:
1.5x.120? havent gotten this far yet
rock krawler dana 30 build-a-joint at axle
3/4 or 7/8 hiem at frame?
a lot of talk about longer or shorter upper, depends what you want to do. im thinkin the upper will be an inch longer than the lower.
with 8+ inches of separation at the axle and right around 4 inches at the frame end my pinion should stay pointed at the tc thru the entire cycle.
drop brackets and short arms gone, finally
no goin back
tabs and links
mock up 2 days ago
02-18-2011, 07:33 AM
#5
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Year: 1990
Model: Comanche
Engine: 4.0 I6
People bust 3/4 heims alot just in the steering... wouldn't recommend anything smaller then 7/8 for anything suspension related... since your doing a three link and ALL the force is on the frame end heims I would even think1.25 heims... but depends on how hard u wheel... I'm in the process of the same... but I'm doing a d60 swap as well...
02-18-2011, 09:39 AM
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im not a hard wheeler and the rest of the jeep is very stockish. 6 inchs of lift, 33s and a locker. the upper will be on the drivers side. i think the 3/4 will work for my application and driving style. if not i will find out soon enough
02-18-2011, 10:18 AM
#7
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Year: 1990
Model: Comanche
Engine: 4.0 I6
Originally Posted by xjmonkey
im not a hard wheeler and the rest of the jeep is very stockish. 6 inchs of lift, 33s and a locker. the upper will be on the drivers side. i think the 3/4 will work for my application and driving style. if not i will find out soon enough
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02-18-2011, 10:54 AM
#8
Do you hear banjos?
The diff housing is stronger than the stamped steel bracket on the PS. 3/4" quality heims should be fine. I have heard of cheapos busting, but if you use QA1, or even Mid West Control heims, you'll be fine, and you can beat on it some if you want...
02-18-2011, 01:46 PM
#9
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Model: Cherokee
believe i didnt go cheapo on the hiem, i realize this is not the place to cut corners for cash. i think the crawler joint will self-destruct before the hiem
02-18-2011, 02:44 PM
#10
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Year: 1991
Model: Cherokee
Engine: 2001 4.0L
like cos said....the cast mount is WAY stronger. i was going to advise to replace the entire pass side axle mount had he been doing it on that side.
also i use QA1 3/4 heims, and have never broke one....even running d60's and 40's
Last edited by MallCrawlXJ; 02-18-2011 at 02:47 PM.
02-18-2011, 07:15 PM
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Year: 1991
Model: Cherokee
Engine: 2001 4.0L
yeah they may break if you come down on a rock on em, but when do your uppers ever see rocks????
.....i dont run heims on my lowers and the OP isnt aswell
.....i dont run heims on my lowers and the OP isnt aswell
02-18-2011, 10:56 PM
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well guys after getting input here and elsewhere i decided to return the hiem and dom. ill now be going uber beef with a 1.25 hiem.
Last edited by xjmonkey; 02-18-2011 at 11:01 PM.
02-19-2011, 08:55 AM
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Year: 87
Model: Cherokee
Engine: 4.0
Good choice
I rub the RK 3 link, and plan on running it again on my truggy. For the money, it is one of the best out there. Not bashing making your own, but I have lil time to work on my stuff.. so getting it done.. is more important. PLus the solid links are stout
I rub the RK 3 link, and plan on running it again on my truggy. For the money, it is one of the best out there. Not bashing making your own, but I have lil time to work on my stuff.. so getting it done.. is more important. PLus the solid links are stout