Dana 18 Gear Set Questions

Guys, I finally found out what's making noise in my transfer case.. Its entirely wore out. Sliding gear can cock on the shaft almost 1/4 inch and the lash between the intermediate and output shaft gear make a clunck back and forth.

Its a big hole case and has the gears that match the t-90 or t-86 years of production. I put a novak shaft in it about 3K miles ago. I don't know what made me think this transfer case was worthy of being put back in.

Anyway, jeeps fully apart right now for the 4.3 install and its time to fix the junk.

Are all the input shafts the same and has anyone had good luck with Omix gears?

 

Can you bore the gears out and press in a sleeve?

 

I think the sliding gear is splined.

 

It is splined. I don't want to try and fix this junk. I want a solution that isn't a D20 or a D300. I would like to keep my full float offset axle.

 

I read his post totally wrong. I thought he was talking about the intermediate gear.

 

Novak has a table of the gear numbers and what gears are used in which apps. The Novak Guide to Dana 18 & 20 Gears Interchange 1941-1979
That may help you find the parts you need. No idea about the Omix gears.

 

The 'net is full of crappy reviews of anything Omix.
Gears are no better.
Step up and buy quality if you must.

 

I would buy NOS, but it seems that there are pretty much none left. I already cobbled together this one, but its really worn out. Looking to not go D20 or d300 with a rear axle change or another expensive adapter to the SM420.

 

Surely there's members on here who have some good used gears for you. I'd trust 60 year old Spicer over brand new Omix....

 

I would send a note to wheele . he might have one sitting around

 

Inspired by my Dad's full-time Dana 18, I've thought a Land Rover L230T would be a good transfer case.

It's gear drive like a Dana 18, with low range, but also has a locking center diff. Apparently two different companies were making under/overdrives for them. Of course, you're on your own for adapters.

 

I wonder if Roxor gears fit and are any better than Omix?

 

Thats a good question.

 

Herm lists Mahindra transfer cases as "metric" on his site: Application Information | Herm The Overdrive Guy

Not sure what the means for part comparability, but Herm probably knows.

 

you beat me to that thought haha.

 

I just looked at Atlas cases... HHAAHAHAHA! There are 18's here too. Used and with 1 1/8th shafts, small hole etc for like 175 bucks. Forget that. I'm willing to spend some money to repair this old junk, but I don't want to spend money on stuff that's in similar condition. I really want some NOS parts or an effective compromise. If I have to spend a lot or fabricate anything, i will find another avenue.

 

Debella seems to have some NOS Dana 18 gears. Might be worth calling them:

Transfer Case Catalog - Willys Kaiser CJ2A CJ3A Jeep  - Peter DeBella Jeep Parts - www.debellajeepparts.com
Willys Civilian Jeep CJ3B CJ5 - Transfer Case - Peter DeBella Jeep Parts www.debellajeepparts.com

 

I looked at terra flex gears, but they are over 800 bucks and it doesn't come with everything I need. For that money, I will go another route.

Debella may be a supplier. Thanks!