2000 XJ Rear axlw !!!! which one - JeepForum.com
 
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post #1 of 14 Old 05-29-2020, 09:26 AM Thread Starter
Hamid
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2000 XJ Rear axlw !!!! which one

Hello everyone:


My XJ is 2000 year model 4WD (AW4), select track NP242, frond axle is Dona 30. It is built for export.

VIN: 1J4FFB8V9YL194116



Tomorrow I will remove my rear axle ( Dana 35 ) and will install another rear axle ( flat bottom ), which seems to be the Chrysler 8.25,,,, because the old axle has some friction noise on turns and slips on reverse. Till then I hope for some answers to my questions,,,,,,,to save time much as profit.



1- How do I know what rear axle was installed when this XJ came out from the plant?.
2- What is the common rear axle used on 2000 XJ?.
3- I heared that both front and rear axles ratios must be the same, is it true?

Thanks for the advise.


*****************
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post #2 of 14 Old 05-29-2020, 11:04 AM
CJ7-Tim
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1) Request a "Build Sheet" from Chrysler Jeep website.
2) Both Dana 35 and Chrysler 8.25 axles were installed on 1997-2001 Cherokees. If Jeep has ABS and you want to keep ABS, you need a Dana 35 with ABS. No Cherokee Chrysler 8.25 ever had ABS.
3) Axle ratio for 4x4's must match within 2%, 3.54 - 3.55 is OK.

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post #3 of 14 Old 05-29-2020, 12:53 PM
Ralph77
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Assuming the build sheet is right it is a D35.

https://fcacommunity.force.com/RAM/s/equipment-listing
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post #4 of 14 Old 05-29-2020, 01:57 PM Thread Starter
Hamid
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Thanks CJ7-Tim, my XJ is non ABS and non Cruise control, so 8.25 is good pic.
Thanks Ralph 77, that what is installed now,maybe the original.

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post #5 of 14 Old 05-29-2020, 05:23 PM
Devil15
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Also look for an 8.25 with limited slip. Theres a sticker in the glove box that will let you know it's a limited slip. When my d35 blew up I had to pick through about 20 cherokees before I found one but it bolted right in all I needed to change was the ubolts.

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post #6 of 14 Old 06-03-2020, 04:23 PM
PimaXJ
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@CJ7-Tim , I feel as if I am on thin ice here as you are always accurate & truly a fount of information but the 8.25 found in the KJ Liberty came with the 8.25 with ABS did it not?
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post #7 of 14 Old 06-03-2020, 05:01 PM
CJ7-Tim
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ABS was a option on a KJ Liberty until 2006 when it became standard due to ESP, but neither the KJ axle nor the ABS will bolt onto an XJ without significant modifications.

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post #8 of 14 Old 06-04-2020, 01:23 AM Thread Starter
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Hi everyone:

Went to a friend's shop, he removed the Dana 35 ( Dana 35C, C-clip – 3.07 ratio (43-14) it is OEM as in the build sheet thanks to Ralph77, installed used low milage 8.25 with hubs, shoes, serviced, hand brake adjusted, rear drive shaft UJ replaced with new ones, went for test, results:
1- No whining sounds at all speeds ( Dana 35 has sounds and it jerks on turns ).
2- Vibrations reduced to nearly 95% (used ti vib over 110 KMH).
3- Speedometer difference now 4 KMH ( was 15 KMH ). wish I know ho to correct that to zero diff.
That was very good swap to me, 8.25 has locking feature, which Dana 35 did not.
For the ABS, the mechanic didn't mention any thing about it and I did not bother to ask too.

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post #9 of 14 Old 06-06-2020, 06:05 AM
BagusJeep
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Are your axle ratios the same back and front?

You can change the ratio with a new ring and pinion,

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post #10 of 14 Old 06-06-2020, 09:29 PM Thread Starter
Hamid
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I don't know, the mechanic said the 8.25 rear axle he put on has a 39/(?) pinion and it is the same for the front axle.
(Axle ratio for 4x4's must match within 2%, 3.54 - 3.55 is OK.) that's CJ-17 reply in post#2.

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post #11 of 14 Old 06-07-2020, 08:33 PM
Mrtoyou
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The fact that your speedo is reading different after the rear end change is a clue that your gear ratio is not the same as before. DO NOT shift into 4WD until you physically verify the gear ratio is the same in the front and rear within 2%!!!!!

If I have to explain it, you probably won't understand anyway!
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post #12 of 14 Old 06-08-2020, 04:56 AM
CJ7-Tim
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Quote:
Originally Posted by Mrtoyou View Post
The fact that your speedo is reading different after the rear end change ..... ....
Every XJ Cherokee Speedometer left the Jeep factory displaying about 1%-3% error. Manufacturing tolerances and air pressure can cause tire diameters to vary, which may lead to additional speedometer errors.

.
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post #13 of 14 Old 06-08-2020, 06:50 AM
MaskedMallard
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Quote:
Originally Posted by Hamid View Post
Hello everyone:


My XJ is 2000 year model 4WD (AW4), select track NP242, frond axle is Dona 30. It is built for export.

VIN: 1J4FFB8V9YL194116



Tomorrow I will remove my rear axle ( Dana 35 ) and will install another rear axle ( flat bottom ), which seems to be the Chrysler 8.25,,,, because the old axle has some friction noise on turns and slips on reverse. Till then I hope for some answers to my questions,,,,,,,to save time much as profit.



1- How do I know what rear axle was installed when this XJ came out from the plant?.
2- What is the common rear axle used on 2000 XJ?.
3- I heared that both front and rear axles ratios must be the same, is it true?

Thanks for the advise.
Quote:
Originally Posted by Hamid View Post
Hi everyone:

Went to a friend's shop, he removed the Dana 35 ( Dana 35C, C-clip – 3.07 ratio (43-14) it is OEM as in the build sheet thanks to Ralph77, installed used low milage 8.25 with hubs, shoes, serviced, hand brake adjusted, rear drive shaft UJ replaced with new ones, went for test, results:
1- No whining sounds at all speeds ( Dana 35 has sounds and it jerks on turns ).
2- Vibrations reduced to nearly 95% (used ti vib over 110 KMH).
3- Speedometer difference now 4 KMH ( was 15 KMH ). wish I know ho to correct that to zero diff.
That was very good swap to me, 8.25 has locking feature, which Dana 35 did not.
For the ABS, the mechanic didn't mention any thing about it and I did not bother to ask too.
Based on your build sheet, assuming it's correct, you have the "UpCountry" package. That could explain your noise, due to the Trac-Loc 3:55 ratio failing.

I'm a little confused about you mentioning you have a Dana 35C, C-clip - 3.07 ratio.

Do you know the gear ratio of the C8.25 rear axle that was just installed into your XJ?

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post #14 of 14 Old 06-08-2020, 10:52 AM
Mrtoyou
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Quote:
Originally Posted by CJ7-Tim View Post
Every XJ Cherokee Speedometer left the Jeep factory displaying about 1%-3% error. Manufacturing tolerances and air pressure can cause tire diameters to vary, which may lead to additional speedometer errors.

"3- Speedometer difference now 4 KMH ( was 15 KMH ). wish I know ho to correct that to zero diff."


That is NOT a 1%-3% difference, that is a different gear ratio.

If I have to explain it, you probably won't understand anyway!
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