Rear brake drum size

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Apr 22, 2016 | 11:23 AM

xjcrazy0346

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Rear brake drum size

Question fellow jeepers which is more common 9" or 10" drums

Apr 22, 2016 | 06:17 PM

xjcrazy0346

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how to determine which one u have messsure inside to inside?

Apr 22, 2016 | 07:29 PM

ehall

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From: Southern Maryland

Year: 1991

Model: Cherokee

Engine: 1999 4.0L

XJ drums are almost all 9" AFAIK only the police and comanche D44 had 10"

measure the inside diameter of the drum

Apr 23, 2016 | 03:31 AM

gunmetal_nightrider

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From: Hampton Roads

Year: 1997

Model: Cherokee

Engine: 4.0 L

And then compare the new part to the old part just for good measure

Apr 23, 2016 | 09:29 AM

Dumajones

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From: Alaska

Year: 2000 sport

Model: Cherokee (XJ)

Engine: New 4.0l from s&j engines

Mostly 9" unless you have the police package.

the 10" drums have fins on the outside and the 9" are smooth.

Apr 23, 2016 | 09:50 AM

xjcrazy0346

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Fins? Lol I don't wanna sound stupid or anything but what u mean fins

Apr 23, 2016 | 09:56 AM

Dumajones

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From: Alaska

Year: 2000 sport

Model: Cherokee (XJ)

Engine: New 4.0l from s&j engines

Quote:

Originally Posted by xjcrazy0346

Fins? Lol I don't wanna sound stupid or anything but what u mean fins

Cooling fins..

The 9" is on the left and 10" on the right in this pic.

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Apr 23, 2016 | 01:50 PM

xjcrazy0346

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Thanks man for the info. I've done a lot of work to this jeep about to get it lined out finally lol

Apr 23, 2016 | 03:31 PM

Rambler65

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Joined: Sep 2015

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From: Abysmo, NJ

Year: 1999

Model: Cherokee

Engine: 4.0

The 9" rear drums sure look wimpy. My "to do" list includes converting them to discs. Right now they're working OK so no rush, but if I had to work on the back brakes anyway I'd rather not stick with the drums.

Apr 23, 2016 | 04:16 PM

#10

Dumajones

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From: Alaska

Year: 2000 sport

Model: Cherokee (XJ)

Engine: New 4.0l from s&j engines

I forgot to mention,, If I remember correctly the 9" brake shoes are 2 1/2" wide and the 10" shoes are 1 3/4" wide,, maybe 2".

Apr 24, 2016 | 09:51 PM

#11

XJwonders

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From: west chester, pa

Year: 1999

Engine: 4.0

Quote:

Originally Posted by Dumajones

I forgot to mention,, If I remember correctly the 9" brake shoes are 2 1/2" wide and the 10" shoes are 1 3/4" wide,, maybe 2".

actually. There's two widths of 10" drums. D35 10" drums are 1.75 wide and d44 10" drums are 2.5 wide

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