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Old 11-28-2010, 05:47 PM   #1
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Lift Question

I know you guys have had to answer this question hundereds of times but it's quick. How far can you lift a 4.0 5sp TJ without having to drop the transfer case, or do a SYE?, or change the driveshaft?

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Old 11-28-2010, 05:49 PM   #2
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2" is about the max height for the standard SWB version of the TJ (not the longer wheelbase Unlimited), most get away with without needing to drop the t-case an inch. But some do need to drop the t-case even at 2", others don't... kinda depends on the Jeep. My own TJ was fine with a 2" suspension lift and no t-case drop.

For a SYE kit, 4" and taller is where I always recommend a SYE and CV driveshaft.

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Old 11-28-2010, 05:52 PM   #3
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i have a 4.0 with a 6sp and i put a 2in BB on it and the t case needs to be lowered. It makes this weird clicking noise as the U-Joint turns, it angled to much. Its very annoying. Going to lower the piece over winter break. But hey every tj is different is what they say
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Old 11-28-2010, 05:53 PM   #4
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If I can ask another question then, I only plan on going with 33 in tires. I have never done a lift before how hard is it to drop the t case? For a brief overview I believe you mean a slip yoke emilinator kit are those tough and what kind of ballpark pricewise would I be in for a new driveshaft?
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Old 11-28-2010, 05:55 PM   #5
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Jeep TJ Transfer Case Skid Plate Drop Vibe Fix
this is the guide im going to follow to drop mine. If anyone knows where to get those grade 8 bolts and washers let me know. NAPA, Lowes? I dont even know what grade 8 is
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Old 11-28-2010, 06:00 PM   #6
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lowes, home depot, and pepboys have grade 8 bolts
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Old 11-28-2010, 06:01 PM   #7
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Grade 5 bolts are more than strong enough to use for the transfer case skidplate, Grade 8 are even stronger but you don't need Grade 8 there. Grade 5 and 8 bolts are simply much stronger than your average garden-variety hardware.

Sometimes you'll get lucky and find such bolts at Lowes but stores like Lowes, Home Depot, etc. rarely have much of a size selection of hardened bolts and nuts to choose from. More often you will need to go to a smaller specialty hardware store to find them. You simply need 1" longer versions of what you have now.

By the way, Grade 5 and Grade 8 refers to hardware that is in an SAE (U.S.) size like 1/2". Newer Wranglers use Metric size bolts there which do not come in Grade 5 or Grade 8, you will want to use a Metric 8.8 bolt there which is roughly equal to a Grade 5. Metric 10.9 is roughly a Grade 8.
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Old 11-28-2010, 10:02 PM   #8
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Have I mentioned how helpful you guys are? Then a t-case drop is a necessity, what about the driveshaft? What is the max height before you have to have the driveshaft replaced and is there a ballpark for what they run? Is there anything else you would have to do besides the lift kit, drop the t-case, and possibly a driveshaft? Finally, if you lift a LJ (longer wheel base) do you have to get a different driveshaft? Thank you again for all of your help.

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