WARNING: All 4.0 owners check your motor mount/block Bolts!!!! - Page 4 - JeepForum.com

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post #46 of 244 Old 10-12-2008, 12:07 AM
mud-dog27
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hope i dont gotta go through that shiat i just replace my motor mounts with some bombproof ones and mine were nice and tight mind you i did notice that i only had 2bolts on either side instead of the 3 that are sposed to be there but hell i figure ive gone this long with 2 per side so meh


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post #47 of 244 Old 12-24-2008, 09:55 AM
collkid
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So all bolts at 27 lbs

Has anyone else heard of getting a tiny bit shorter bolts? this is suppose to be better for some reason?

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post #48 of 244 Old 12-24-2008, 10:08 AM
Thegonagle
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Thanks for the warning. My '96 has over 220,000 miles. She's not my daily driver (that's a stick-shift Honda Accord that gets 35 MPG on the highway), but I've grown quite fond of her, and I wish to keep her running for awhile yet.
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post #49 of 244 Old 12-24-2008, 10:15 AM
loosenut
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Would it be possible to take one bolt out at a time and replace it with a better one? Seems like an easy way to change out the old bolts without having to support the engine and do a whole motor mount at once. If my thinking is wrong, let me know.
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post #50 of 244 Old 12-24-2008, 10:16 AM
mattathayde
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Quote:
Originally Posted by collkid View Post
So all bolts at 27 lbs

Has anyone else heard of getting a tiny bit shorter bolts? this is suppose to be better for some reason?
the only way they could be better is if he standard bolts for what ever reason cannot reach all the way in and are to long to seat tightly, shorter bolts have less friction to keep them in and have less old in general so there is no reason they would be better unless like i said the full lengths cannot tighten in fully

-matt
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post #51 of 244 Old 12-24-2008, 10:18 AM
mattathayde
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Quote:
Originally Posted by loosenut View Post
Would it be possible to take one bolt out at a time and replace it with a better one? Seems like an easy way to change out the old bolts without having to support the engine and do a whole motor mount at once. If my thinking is wrong, let me know.
2 posts cause i saw this posed after i did my other one

i dont think its going to be possible to do that with no support, you may be able to squeeze it in but the engine is so heavy that i bet the holes will not alight properly to get it back in (if you can even get the bolt out to start with if there is no support to get the weight off the mounts)

-matt
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post #52 of 244 Old 12-24-2008, 11:44 AM
tc90xjcherokee
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Quote:
Originally Posted by XJLI View Post
wash it.

they hold your motor up.
HAHAHA

Thats funny **** right thur

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post #53 of 244 Old 12-24-2008, 11:48 AM
collkid
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Yeah I thought that one was funny too.

I wonder if I should go Grade 8? some have some havent'...

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post #54 of 244 Old 12-24-2008, 02:46 PM
Saudade
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There have been other posts that claim the bolts are too long and bottom out in the holes instead of "clamping" the bracket properly. When I changed my pass side (2 broken), I did not observe this. The FSM calls out 2 different lengths for my 88. I did swap for Grade 8.

If the remaining bolts are tight, I don't see why you would not be able to swap them out one at a time. If the bolts spin out by hand once you have them loose, the new ones should line up fine.
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post #55 of 244 Old 02-28-2009, 10:16 PM Thread Starter
BrunoS
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7500 miles later. still running great, no cracks in weld; DD.

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post #56 of 244 Old 03-01-2009, 05:49 AM
NowMed
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Word to mother!
Motor mounts are dangerous!
If you break a motor mount your truck might bite the dust!
Then start to rust!
Then your girl will have to drive and then start to fuss!
Check your motor mounts, ITS A MUST!
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post #57 of 244 Old 04-12-2009, 01:41 AM
nrpalmer32
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Nice NowMed. hahah Just bringing this back up because I do remember seeing my radiator fins crushed a little from the stock fan. Would this be a sign of the motor mounts going out? BTW I cant go out and check the motor mounts bc of where I am, so please no smart a$$ comments! lol The radiator is not completely damaged but it does have a large "ring" shown on the fins.
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post #58 of 244 Old 04-12-2009, 01:30 PM
Buzzstrike
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+1 on the pass. side bolts.

That's what I found out what was bad when I bought my XJ (for 400.00 off of CL) it only had 1/2 gear.

Thought it was the eng mounts. When I went in to replace said mounts I found the rt hand side eng. cushion bracket seperated from the block.

All 3 bolts had failed and were remaining in the block. I was able to remove two of them and replaced all hardware with grade 5.

I still have one shank in the block but will be comming out soon because I now have the proper tooling (drill) to get the M/Fer out.

I now have 204K on it and I bought it with 201K back in the first week of March.

To cool.

Buzz

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The rules of life.
1) Life is NOT fair.
2) Stupidity SHOULD be painfull.
3) Play stupid games win stupid prizes.

Last edited by Buzzstrike; 04-12-2009 at 05:57 PM.
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post #59 of 244 Old 04-12-2009, 01:52 PM
Fox Fader
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I better check mine. Juuust to be certain.

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post #60 of 244 Old 04-12-2009, 02:00 PM Thread Starter
BrunoS
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short answer: yes, check bolts

Newly Painted! Emerald Green '96 XJ 4x4 4.0 HO 5-spd
3" Lift + 31" Tires / D35 TracLok / NP231
Drilled out Stock Airbox / Gauge Cluster Upgrade
Magnaflow Muffler / High-flo Cat / MSD Coil
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