YJ Gearbox or Durango Gearbox for DIY Hydro Assist?
Currently I have a Durango gearbox on my YJ and It's been installed for a few years. I pulled it from a Durango out of the junkyard and at the time wasn't leaking. Now it's leaking like no other and the gears are bad in it so the box needs to be replaced or rebuilt. There is a local company here in Phoenix that does a great job of rebuilding gearboxes and they will also tap the box for hydro assist for a very minimal fee.
As you know you lose turning radius with the Durango gearbox but the strength is the added bonus. Since i'm moving to hydro ram assist, which gearbox should I go with? Currently they have a TJ gearbox on the shelf ready to go and it's already tapped for hydro assist. I could buy that or have them rebuild my Durango box for the exact same price. Keep in mind i'm switching to hydro assist where the gearbox is more of a pass through vs being the main source of turning power. Do I get rid of the Durango box and switch to the TJ box and gain that turning radius back or are there any advantages to staying with the Durango box vs TJ box when it comes to Hydro Assist. I would like to have the turning radius back that i'm missing out on from the stock YJ box, but if the Durango has advantages I would like to know about those as well.
Lastly Benchworks told me that the Durango has a 3.25" piston vs the TJ having a 2.75" piston. They said with the larger piston it will provide more hydraulic push. Thoughts on that? Is this true or does the additional pressure come from the power steering pump?
I can't seem to find any good info on durango vs stock box when it comes to hydro assist only.
Thanks for the replies! Hopefully someone is using the durango box with hydro assist on their YJ or has actually used both before to know the difference.
Eric - *'92 White YJ, 4.5" custom Deaver springs, 35" MTRs, Tera-Low 4:1, CAI, Rear 8.8, Chromo D30, 4.88s, locked front/rear, full cage and front/rear tube fenders.
*'08 Silver Rubicon JKU 2.5" lift, 5.13's and 35's