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spacers & spring compression?

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Old 01-07-2009, 11:22 AM
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Post #7 has been edited

Originally Posted by AV9Inch
Just buy some bilsteins and forget about bump stops.
Bump stops/ limited straps are important. Using most shocks as a limited strap, or use as bumpstops can cause damages to most of the shocks.
Last edited by MBATF; 01-07-2009 at 11:27 AM.
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Old 01-07-2009, 11:24 AM
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Originally Posted by MBATF
Adding spacers on the springs will not further compressed the springs, just added lift height of the vehicle. The spacers don't weight more than 2lbs. Which means adding spacers will not damage the springs.

But you can add bump stop extensions if you don't feel comfortable of the idea that now springs are more compressed then before adding the 3/4" spacers.
Fo sho and fo certain you missed that one. Certainly if you add a spacer on top of the spring, it can compress more. The only ways for it not to would be 1) if you also added the same amount to the bumstop or 2) lowered the lower spring mount the same amount as the spacer, which of course would defeat the purpose of installing the spacer to begin with. While the spring CAN compress 3/4" more than stock with a 3/4" spacer, only two questions come to my mind about it. Will the Jeep REALLY be wheeled hard enough to make it compress that extra 3/4"? And if it's wheeled hard enough to do it, will that extra 3/4" of compression really amount to a bucket of horse piss? My guess on both counts is no. Now, if we were talkin somethin on the order of a 2" BB with no bumpstops, and the Jeep sees full stuffage a lot, then by all means, over compression becomes a real possibility. At 3/4" though, I really don't see a problem, even though the spring WILL compress a touch more.
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Old 01-07-2009, 11:24 AM
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Originally Posted by MBATF
Bump stops/ limited straps are important. Using most shocks as a limited strap, or use as bumpstops will cause damages to most of the shocks.
Correct me if Im wrong but bilsteins have built in bump stomps in the shocks.

That why the rough country kits do not come with bump stops.
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Old 01-07-2009, 11:25 AM
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Originally Posted by AV9Inch
Just buy some bilsteins and forget about bump stops.
That was funny.
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Old 01-07-2009, 11:26 AM
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Originally Posted by AV9Inch
Correct me if Im wrong but bilsteins have built in bump stomps in the shocks.

That why the rough country kits do not come with bump stops.
Not all of them do. Even on the ones that have them they aren't worth a plug nickle.
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Old 01-07-2009, 11:27 AM
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plug nickel eh? lol

Opinions are like nagging wifes, everyone has one.
Last edited by AV9Inch; 01-07-2009 at 11:33 AM.
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Old 01-07-2009, 11:33 AM
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Originally Posted by rocknredrubi
Assertion 1:
If an empty JK has 6 inches of space between the frame and bumpstop, and I add xxx tons of weight to contact the frame to the bumpstop, the spring has compressed 6 inches.

Assertion 2:
If I repeat this experiment with a 1 inch spacer between the top of the spring and the frame the spring will compress 7 inches.

Question:
If were to continue this process adding an inch at a time, at what point does the length of the spacer start to over compress the spring?
You have a point, but in that assertion you are already grossly exceeding the weight rating of the vehicle and overloading the carrying cappacity of the spring. In that case if the spring were overcompressed and damaged it would not be the fault of the spacer but that of the owner who overloaded the vehicle in the first place.
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Old 01-07-2009, 11:34 AM
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Originally Posted by AV9Inch
Correct me if Im wrong but bilsteins have built in bump stomps in the shocks.

That why the rough country kits do not come with bump stops.
They do. Can't solely depend on one single part. Cuz shocks are expensive vs bumpstops.
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Old 01-07-2009, 11:36 AM
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Originally Posted by JK_JOE
You need to add a longer bump stop or a spacer to the bump stop pad.
This was my thought as well. Is it as simple as when you increase space between spring and frame you must increase bumpstop length equally? Or is there some generally accepted tolerance - less than an inch should not matter (for example)?
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Old 01-07-2009, 11:38 AM
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Originally Posted by HappyCurmudgeon
i always failed these questions in Algebra.

the train is three hours late, and the car is green.
I hated those questions too
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