So I’ve had some people asking for pix of the mythical Dana 18 / Borg Warner low range that I built about 10 years ago….Please understand that I built this thing on ancient equipment. Made it with hand made stuff. It is flame-cut ugly throughout. Really built it as a prototype. For what end I don’t even remember. Not like there is a huge market for people needing crazy rockcrawl gearing in an ancient transfercase..And it is all made of antique castoffs, freebies, borrowed equipment, mooched machine shop time, inestimable free time likely better spent doing more worthwhile things like drinking, boozing, whoring around and postage stamp collecting. The true machinists among us will likely be aghast. And there were some oiling issues early on….. but… I digress… Here is the thing in it’s glory….or lack thereof
Here it is all together before installation.
This is the hollow shaft in position The adapter plate has the original q-trac bearing and thrust washer going on next. I don’t have a pic of it currently.
This is the side view of the hollow shaft that connects the q-trac to the 18 drive gear. It is the q-trac Chaindrive sprocket with enough gear turned off it to fit through the pto opening. It then has just the center of a 18 lowrange gear tig welded to it to engage the teeth on the 18 transfercase drive gear that is actually another driven 29 tooth gear (the one with smooth inside from the bottom end of the t case.)
This is the output shaft in the 18 case. Note the bearing. This sits on top of the main support bearing in conjunction with a couple spacers to set depth for the drive gear.
This gear is held in place by the hollow shaft assembly and the thrust washer that is between it and the Q-trac adapter. When on the throttle it pulls the gear forward and the thrust load is taken by the bearing in front of the gear. Off the throttle load is taken by the thrust washer. Im probly going to make it a torrington thrust roller bearing someday. So far, the washer is doing fine. The jeep its in sees almost no road miles in a year so not a big deal.
This is the output shaft and T18 to Dana 18 adapter. This is the much easier to find large hole adapter that is commonly found in newer CJ’s and J trucks up thru 79. This case started life as a Dana 20 as they have a bit more strength. 18 guts go right in them.
Here it is in the jeep showing the shifter mechanism. I ground some metal off the backside of one of the shifters and used a piece of 1/8″X 1″ flatstrap to Make a third shifter pivot. There is round stock welded to it to make the actual shifter stick. Everyone thinks it’s a Warn overdrive shifter.
Another view installed. Note floor mods. Stock gas tank still fits.
This is the Jeep its all stuffed into. Currently has a Mercedes diesel, 9″ford rearend and a Dana 44 front. Its a strange combo of stuff, Certainly not everyones cup of tea….But its mine and I like it.