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Old October 30th, 2011, 01:00 AM   #1
tw1st3d5
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Default Rear locker

I currently have a spool in the rear 9" on the Jeep I bought from Monkeyevil. It will see road time and just in the last few days, I can see a decent amount of wear on the rear tires. I want to swap out the spool for a locker and there seem to be dilemmas with all of the ones I've been looking at.

35 Spline ARB (RD99) - engagement collar issues. Potentially solved by higher engagement pressure, Spidertrax engagement collar ($200 above the price of the locker), and not crash locking.

35 Spline Detroit - Driving in the winter with a manual and a rear Detroit in a Jeep has always been scary. Eventually I'd like to swap to an auto but not before this winter.

35 Spline Yukon Grizzly - Haven't heard good or bad for the 9". In fact, I can't remember reading any reviews.

I'd love to put an ARB in both the front and rear but would hate to have the engagement collar issues. I'd engage them with CO2 set to about 250# which is what I've been reading as the suggested pressure now.

Let's hear some other ideas or any info that you may have.
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Old October 30th, 2011, 03:25 PM   #2
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No opinions?
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Old October 30th, 2011, 08:57 PM   #3
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ARB's on co2 would be my choice.
On sale with a free ARB diff cover untill dec 1st..
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Old October 30th, 2011, 10:35 PM   #4
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Free diff cover for a 9"....that'd be interesting. I'm leaning that way with the engagement collar upgrade from Spidertrax. Just harder to justify it when you can get a Grizzly or Detroit for about 500 and then the ARB will run 1200-1300.
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Old October 31st, 2011, 11:49 PM   #5
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From what I know about the Grizzly for the D44, ARB's patents expired on the older series of lockers, they did a redesign, and Grizzly copied the old design. I have no idea what or if this means anything for the ARB 9" lockers.

The failures your hearing about ARB's are likely guys that are racing or using them competitevly. That said paying $1,000+ for something that wasn't bulletproof never sat well with me.
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Old November 1st, 2011, 06:07 AM   #6
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I ran an older style ARB in a 9" for years without problems. Some people really complain about the Detroit in the snow, others never seem to have a problem. Can't explain that one. I'm spooled now but if I ever change it will be to an ARB.
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Old November 1st, 2011, 06:18 AM   #7
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Originally Posted by whiterhino View Post
I ran an older style ARB in a 9" for years without problems. Some people really complain about the Detroit in the snow, others never seem to have a problem. Can't explain that one. I'm spooled now but if I ever change it will be to an ARB.
How many splines on the ARB? Everything except the 35 spline seem to be just fine.
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Old November 1st, 2011, 07:21 AM   #8
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I was running 31 spline. As a point of interest, I was discussing this with Jiri on Sunday. He's been running a 35 spline ARB in front and rear 60's since 2000 with no problems and he wheels it hard.
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Old November 1st, 2011, 09:40 AM   #9
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Quote:
Originally Posted by whiterhino View Post
I was running 31 spline. As a point of interest, I was discussing this with Jiri on Sunday. He's been running a 35 spline ARB in front and rear 60's since 2000 with no problems and he wheels it hard.
Neither of those are applicable to the 35 spline Ford 9" issue, though. But its mostly an issue from locking the ARB while under heavy throttle.

It seems like locking it before an obstacle is just fine.
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Old November 1st, 2011, 03:34 PM   #10
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As Jesus said, the only ARB that I've seen with issues is the 9" 35 Spline. It's something to do with them trying to put the larger shafts in a smaller case. That's also the reason they won't go up to a 40 spline locker. Only thing available in 40 spline for a 9" is a spool.
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