made mistake I think

my last post I think I put T90 trans but after looking around the site I see it is probably a T14 trans with a T18 transfer single stick so can I go to a T20 transfer without alot of problems and I am going to different axals also, centers not the offsets I already have the offsets any problems with this PLEASE ADVISE Thanks

 

What does your rear axle lok like? Is it a flanged unit or the 2 piece. The dana 18 transfercase has a better gear ratio than the stock dana 20 unit.
You don't say why you want to convert, this may be important or a mere waste of money if done for the wrong reason.YMMV

 

are you axles and transfer bad

 

I really prefer both axles being offset for offroading. Clearing obstacles is quite a bit easier.

I don't think there are too many compelling reasons for moving to a Dana 20 transfer case in these Jeeps. They are quieter running and strong - no doubt - but you have the gear ratio downgrade and the steeper rear driveshaft and the time and expense of the changeover.

 

thanks for the tips a guy was selling the front and rear axals for a $100 and was willing to trade transfercases to make the axals work I am new to jeeps I had a 66 cj5 24 years ago so just learning again do you think just stay with the originals they work fine Thanks

 

If the front axle he is selling is a dana 30 it would be worth the $100 alone. What rear axle do you have, if you have a flanged dana 44 you already have the best rear axle jeep put in a cj stock.

 

mcruff I have a closed knukle front axal Im not sure what the rear is stock for 1970 I think how can I tell which is which

 

The 70 model was a transition year. If you have a little cup or nut in the middle of the axle shaft it is a 2 piece.
Here is a flanged axle, notice the center of the axle shaft.

A 2 piece axle:

The flanged axle is the strongest that they made for a stock Jeep.

 

mine has a nut and on the tag it says 44 9

 

mcruff so do you think it a good deal to change these axles out or would you stay with what i have he is selling front and rear axles transfercase emergency brake and cables for $200 and I dont know if the transfer will bolt up to my T14 trans without adapters whats your though

 

I would buy all of it, keep your transfercase, your rear axle and trans, put his dana 30 in the front of your Jeep, regear if needed and sell the rest. You could reasonably get a free front axle out of the deal. The dana 30 in the front is worth alot to me, better steering, stronger axles, disk brakes are easier to fit up and if nothing else it has 11" drums on it already as compared to your 10" drums. It also has a better choice of lockers if you want.
Its not a complete bolt in but pretty close!!

That 44-9 is the tooth count on your gears, means you have 4.88 gears. The dana 30 would definitely need to be regeared but still worth it in my opinion.

 

why would you not replace the rear also and not have to regear the front

 

What Sparky said. The offset axle is nice when wheeling to have both chunks on the same side. The dana 20 transfercase has a 2.03 ratio, the dana 18 has a 2.46 ratio. When calculating the ratios out that is a big difference in the woods and rocks.

Heres the math:

3.1 (1st gear) x 4.88 (rear gears) x 2.46 (D18 transfer) final ratio 37.2:1

3.1 x 4.88 x 2.03 (dana 20) =30.7:1

The later dana 44 (72-75) with flanged axle that you were talking about will probably have 3.73 or 4.27 gears which would make that crawl way worse with the dana 18 and down right pathetic with the 2.03 of the dana 20 transfercase.

 

sparky yes mine is the two peace with a nutt he is selling both his axles he told me I would need to replace the tranfercase also because of the off set but not sure if it will all interchange wihout $1000 worthof adapters

 

even though it is not the tapered axle

 

I ment flanged axle

 

Yes, keep it, it is no where near as bad as people think. The gear ratio and the advantages of the transfercase offset any weakness in it. There were also millions of them made over the years and new and used parts are still available.