Using third member core for gear reduction/locker install

[kcjaz]

My installer for my gears and lockers had some time this past week and put my new gears in a LC 100 third member housing he had with the thought that he could get that part done now and then complete my install in January as planned. I'd just give him my 200's third member. Are there any concerns or things that need to be checked? I know people do this all the time but at lest I know where my third member's been... Is there any thing beyond visual inspection that should be done in this situation?

 

[bloc]

If you trust them to set up the pattern correctly there isn't much else to check on a diff. Things like using proper torque and thread locker where appropriate are way down the difficulty list.

 

[turbo8]

Follow the Nitro Gear instructions for the 100 series 29 spline to 200 series 32 spline conversion.

Nitro Gear & Axle 9.5" 4.88 Ring & Pinion (32 Spline) | Nitro Gear & Axle

Buy this Nitro Gear & Axle 9.5" 4.88 Ring & Pinion (32 Spline) at Nitro Gear & Axle.

www.nitro-gear.com

You will also need the 32 spline yoke and install kit.

 

[kcjaz]

If you trust them to set up the pattern correctly there isn't much else to check on a diff. Things like using proper torque and thread locker where appropriate are way down the difficulty list.

The guy doing the work is good and has done many, though not many 200's. He's also in my local club and a great guy. Trust isn't an issue. I was just wondering if there was any need to do anything other than visual inspection to determine if a housing was "good". My 2013 3rd has 170K miles and this 100 3rd housing probably has more and would be 10 year older. I can't think of why any of that would matter for a housing but want to throw the question out there to see what others think.

 

[highfructose]

Follow the Nitro Gear instructions for the 100 series 29 spline to 200 series 32 spline conversion.

Nitro Gear & Axle 9.5" 4.88 Ring & Pinion (32 Spline) | Nitro Gear & Axle

Buy this Nitro Gear & Axle 9.5" 4.88 Ring & Pinion (32 Spline) at Nitro Gear & Axle.

www.nitro-gear.com

You will also need the 32 spline yoke and install kit.

So the yoke on the 200 is different than the yoke on the 100?

So if I’m putting a 100 series pinion and ring gear set (inside a 100 series diff) into my 200, I’m going to need a 29 spline yoke since my 200 has a 32 spline?

And thus by using the 100 series 29 spline pinion, I’m slightly downgrading/reducing its strength?

 

[bloc]

The guy doing the work is good and has done many, though not many 200's. He's also in my local club and a great guy. Trust isn't an issue. I was just wondering if there was any need to do anything other than visual inspection to determine if a housing was "good". My 2013 3rd has 170K miles and this 100 3rd housing probably has more and would be 10 year older. I can't think of why any of that would matter for a housing but want to throw the question out there to see what others think.

These things are strong. As long as it didn’t destroy any bearings or have corrosion the housing itself is most likely perfectly fine.

You could check some of Zuk’s 9.5” builds to see if he mentions common problems but I can’t think of any.

 

[bloc]

And thus by using the 100 series 29 spline pinion, I’m slightly downgrading/reducing its strength?

Ultimately yes, though whether it matters is open for debate.

Because of this I was planning on sourcing 200-series 4.3 rear R&P from overseas, but am trying to decide whether it matters enough to bother.

 

[kcjaz]

Ultimately yes, though whether it matters is open for debate.

Because of this I was planning on sourcing 200-series 4.3 rear R&P from overseas, but am trying to decide whether it matters enough to bother.

Huh? I'm not putting a 100 series 29 spline pinion. I will be converting to the 200's 32 spline.

 

[bloc]

Huh? I'm not putting a 100 series 29 spline pinion. I will be converting to the 200's 32 spline.

Responding to highfructose question about 100 gears.