Worn out T-case chain

[The Dark Side of Will]

wrong again ..... front output will spin at same speed as rear output and therefore no damage occurs to VC, many many cars have been made 2wd this way and after thousands of miles put back to Awd with no problem

Umm... please tell me this is sarcasm.

[101]

Unknown.

It's a "new to me" car that I flatbedded home that wasn't running, was missing the front driveshaft, had a rusted out fuel tank and leaking brake lines among other things. I've only driven it 20 miles since it's been put back together. That's when I noted the noise coming from the transfer case area which I assume is the chain since the splines look very nice.

Hopefully I'll get around to the jack test this weekend. Fingers crossed!

[nando]

it's probably already shot by now anyway

[spdracrm3]

You're welcome!

(If all you do to convert to RWD is pull the front driveshaft, you just turned your viscous coupling into a time bomb.)

wrong again ..... front output will spin at same speed as rear output and therefore no damage occurs to VC, many many cars have been made 2wd this way and after thousands of miles put back to Awd with no problem

[The Dark Side of Will]

You're welcome!

(If all you do to convert to RWD is pull the front driveshaft, you just turned your viscous coupling into a time bomb.)

[101]

Will's Dark Side:

Wa appreciate the continuing research!

My iX is a member of the "chain gang" as well - and when I am eventually forced with a decision of having to spend $900 for the chain from BMW vs. pulling the front driveshaft and having a 2WD iX poser, I'd have to choose the latter. That would be a shame!

Keep digging!

[The Dark Side of Will]

http://www.snowmobilefanatics.com/forums/11-general/66204-what-hyvo-chain.html

User claims to work for Morse TEC, the division of BW which made the chains.

Links to this page: http://www.borgwarner.com/en/MorseTE.../MorseTEC.aspx

Also mentions that the snowmobile chain production may have been sold to Emerson power transmission

http://www.emersonindustrial.com/en-US/powertransmissionsolutions/Pages/home.aspx

[The Dark Side of Will]

Thanks!
For the record, the BMW chain is 1 3/4" wide.

More info:

According to ZF, SAE Transmissions built the T-cases for ZF. Searching that gives a bunch of eastern European looking websites.

I guess SAE bought the chain from Borg Warner.

Also, the HV015 chain used in Jeeps (NP119, 229 and other T-cases)
3/8" pitch, 98 pitches, 1 3/4" wide (just like stock BMW)

Edit: More stuffs:

BMW 325 I 4WD Pre 1988 HV-024 3/8 Pitch x 1-3/4 W x 68 Pitches - RJ
Straight Pitch (All rounded Link Backs)
BMW 325 I 4WD 89-90 HV-024R 3/8 Pitch x 1-3/4 W x 68 Pitches - RJ
Random Pitch, Rounded & Square Link Backs

From http://www.rsgear.com/catalogs/borgwarnercat-2007.pdf (Hy-Vo chain catalog 2007)

Borg Warner rep was pretty sure that the HV-024 and HV-024R are interchangeable and the difference only has to do with the BACK sides of the links, and only affects operating noise.

[nando]

here's a quote from my email source:

The snowmobile chains were used on Polaris and Arctic Cat - 3/8” pitch, 68 pitches, ¾ “ wide

I googled - “68 pitch polaris chain”

maybe we can find a part #.

[The Dark Side of Will]

If there's an OTS narrow chain of which iXers could use two, I have the capabilities to do the machine work on the sprockets.

[AndrewBird]

I think this is possible but the sprockets are hardened which makes machining more difficult. There was a specific chain used in a snowmobile that he thought would work, I'll see if i can dig up the part number.

With inserted cutters, just about anything can be cut these days. At my last job, we used to make some parts out of D2 Tool steel. Inserted cutter went through it like butter. We even cut tungsten a few times.

[ghatid]

well, that sucks.

Fitting signature. I just went ahead and bit the bullet and paid for a new VC. I have 2 tcases with bad VCs, hopefully one of them has a decent chain/sprocket set.

[z122643]

that's the answer then. the only source is BMW.

well, that sucks.

[nando]

that's the answer then. the only source is BMW.

[The Dark Side of Will]

i saved this link after someone posted it ,never used them but they do have a listing ,might be worth a call, i know when this was posted a few years ago people were amazed how expensive the chains were then

http://www.drivetrain.com/parts_cata...se_chains.html

Didn't work... they don't have it.