Originally Posted by articfriends (Post 3758558)

I have a 272 Baja with over 1000 hp, has over 300+ hours on a set of xr gears with 750/950 and then 1050 hp that still look like new in the upper. Had them cryoed and iso rem'd early on and I am in it the drive 1-2 times a year changing bearings, inspecting it and changing lower gears (they fall apart every 30-50 hours -BUT I usually change them before anything else gets hurt) so the upper gears can last. I also have all the Max worx stuff though too like the steel tower and billet cap etc, Smitty
I would say somebody cut corners or didin't know what they were doing when they were in the drive last time, whatkinda prop center line and are you running a 5 blade, I hear of alot more destruction with 5 blades.

Originally Posted by offshorexcursion (Post 3758556)

Sorry to hear about your drive problems. Lots of us have been in your shoes.

You could try having a shop "put it together better" like Mr. gadgets, or Max Machine worx, or Bravo shop, or all american drive service, etc. But theres no magic ferry dust.

You could run Amsoil severe gear oil, Bravo shop oil, Royal purple, redline, etc and hope it helps.

You could waste money on upgrade parts but I would save my money for a spare drive, and/or rebuilds.

Could upgrade to a IMCO SCX, BMAX, Konrad, Arneson, XPower, etc,

Do you have any dreams of upgrading boats?

Good luck

Originally Posted by articfriends (Post 3758558)

I have a 272 Baja with over 1000 hp, has over 300+ hours on a set of xr gears with 750/950 and then 1050 hp that still look like new in the upper. Had them cryoed and iso rem'd early on and I am in it the drive 1-2 times a year changing bearings, inspecting it and changing lower gears (they fall apart every 30-50 hours -BUT I usually change them before anything else gets hurt) so the upper gears can last. I also have all the Max worx stuff though too like the steel tower and billet cap etc, Smitty
I would say somebody cut corners or didin't know what they were doing when they were in the drive last time, whatkinda prop center line and are you running a 5 blade, I hear of alot more destruction with 5 blades.

Originally Posted by Mr Gadgets (Post 3758612)

Where did the shaft snap? Top, middle, bottom? RH rotation? What do the teeth on the upper gears look like, are they snapped off? Any damage to the upper clutch shaft or the bearings in the towers?? It is all speculation, until the full picture is put together.

Dick

Originally Posted by GAZ (Post 3759412)

The shaft snapped 3/4 of the way down the upper splined section. Yes, RH. Can't answer the other questions cuz I have not had the time to tear apart either the upper or lower. Trying to figure out what to do/buy. Who to have rebuild or not.

Originally Posted by ezstriper (Post 3760413)

sounds like the gears ran dry of lube...pull off res. inside make sure not all sludged up and not getting enough fluid to drive...