Question about front shocks - JeepForum.com
 
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post #1 of 15 Old 09-24-2017, 10:02 AM Thread Starter
dodgemahally
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Question about front shocks

You know the story: front shocks degrade slowly over time and you don't realize it. Does anyone have a good method to test them for wear while they are on the vehicle.

Yeah, I know about pushing down on the front fender and count the bounces but this seems inconclusive to me.

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post #2 of 15 Old 09-24-2017, 05:27 PM
kg6mov
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The bounce test isn't conclusive on a ZJ, the shocks are supposed to be a gas charge so they can be shot and still pass the bounce test.

The FSM test procedure is to pull the shock and push it in (should resist a fair amount) and watch it go out a few times, should be smooth and pretty consistent each time.


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I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
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post #3 of 15 Old 09-24-2017, 10:15 PM Thread Starter
dodgemahally
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Quote:
Originally Posted by kg6mov View Post
The bounce test isn't conclusive on a ZJ, the shocks are supposed to be a gas charge so they can be shot and still pass the bounce test.

The FSM test procedure is to pull the shock and push it in (should resist a fair amount) and watch it go out a few times, should be smooth and pretty consistent each time.
Good one kg. That makes perfect sense. I was hoping for a trick procedure(In car) but that's what I'll do. I already bought some cheapo Rock Auto shocks but they will prolly work okay.
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post #4 of 15 Old 09-24-2017, 11:37 PM
kg6mov
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Cheap is usually better than shot, if you haven't replaced them in memory there's a good chance they're shot.


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1984 F250, 460 BB, T19, work truck/future tow pig
1987 Mercedes 300D Turbo, the diesel daily, 30mpg in style

Quote:
Originally Posted by Texas ZJ1 View Post
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
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post #5 of 15 Old 09-26-2017, 10:27 AM Thread Starter
dodgemahally
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Quote:
Originally Posted by kg6mov View Post
Cheap is usually better than shot, if you haven't replaced them in memory there's a good chance they're shot.
Haha......If I remove them to test them, I don't think I'll reinstall them when I have the new ones at the ready.
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post #6 of 15 Old 09-27-2017, 11:13 AM
AmishFury
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Quote:
Originally Posted by kg6mov View Post
The FSM test procedure is to pull the shock and push it in (should resist a fair amount) and watch it go out a few times, should be smooth and pretty consistent each time.
if i still have it i'll take a video of the one i pulled off my front (forget which side)... i pushed it in and it stayed in that position for months
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post #7 of 15 Old 09-27-2017, 12:02 PM
jm8881
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Quote:
Originally Posted by AmishFury View Post
if i still have it i'll take a video of the one i pulled off my front (forget which side)... i pushed it in and it stayed in that position for months
Why did you hold onto a bad shock for months?
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post #8 of 15 Old 09-28-2017, 09:27 AM Thread Starter
dodgemahally
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Quote:
Originally Posted by AmishFury View Post
if i still have it i'll take a video of the one i pulled off my front (forget which side)... i pushed it in and it stayed in that position for months
OK, that's it.......the old shocks are gonners! Thanks guys.
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post #9 of 15 Old 09-28-2017, 10:15 AM
AmishFury
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Why did you hold onto a bad shock for months?
because it wasn't in the way and i was curious if it would ever extend back out (it eventually did)
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post #10 of 15 Old 09-28-2017, 10:36 AM
wingless
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My original OEM Up Country shocks are still working fine and passed that test last time they were off the vehicle. Clearly the red paint helps...






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post #11 of 15 Old 09-28-2017, 12:19 PM
jeepjeepster
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The factory shocks on my 94 were doing fine when I swapped them out a year or so ago. Couldnt really tell a difference when I put the bilsteins on.

Ive always read the upcountry shocks rode really good.

1994 ZJ-I6 w/216,000 mi
1998 ZJ 5.9 w/65,155 mi Slate Black
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post #12 of 15 Old 09-28-2017, 03:44 PM
Luke4010
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My OEM upcountry shocks were very much shot when I bought my ZJ. It felt like you were piloting around a big pirate ship. New bilsteins made a world of difference.
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post #13 of 15 Old 09-28-2017, 03:55 PM
kg6mov
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Yeah, the Sachs-Boge shocks that were in the upcountry package were an excellent shock, and last quite a while if you're not rough with them.


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1984 F250, 460 BB, T19, work truck/future tow pig
1987 Mercedes 300D Turbo, the diesel daily, 30mpg in style

Quote:
Originally Posted by Texas ZJ1 View Post
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
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post #14 of 15 Old 10-04-2017, 09:44 AM
jeepjeepster
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Wonder if the Sach shocks that rockauto sell are comparable?

1994 ZJ-I6 w/216,000 mi
1998 ZJ 5.9 w/65,155 mi Slate Black
2004 KJ w/90,300 mi
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post #15 of 15 Old 10-04-2017, 03:18 PM
Kolak
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If you want an excellent upgrade/replacement, I recommend the Bilstein 4600 series. Like the original Sachs they are a high pressure monotube design for best handling and ride control/quality. They have a lifetime warranty too.

PM me or email me at kolak@aol.com for pricing.

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