Looks more and more like the B-Max might be a good decision....:drink:.

Can't fix stupid

??
It has been proven to save drives and gears.. it`s working as designed. No product ever can give you a 100% guarantee.

I have a friend who ran X gears in his 382 Fasttech with 650 HP. He didn't baby it by any means and got 3-4 seasons out of his drives. He was a firm believer in the surface area logic.

They always let go cruising down the lake about 3,600 - 4,000 RPM. This boat never sees air as it never leaves our 6K acre lake. He lost more drives when the engines were stock. They are now 600 HP 522's courtesy of the late Brad Smith (RIP). Boat has always had IMCO boxes, 30" non-lab finished Bravo I's, and acceptable slip numbers. I'll pass along you think he is stupid.

Agreed but if I drop 5k for guardians and I break 25 hours later I'll be pretty pissed.

Its funny how everyone is looking for the "magic answer" to making the Bravo XR drive last longer or not break at all. This has been going on for years! Mercury is making a killing on you guys!

IMCO SCX Spend it now or spend it later......

My friend just had drive oil coolers installed. feed and return line tapped into upper case and small pump for circulation. Hopefully it works out good for him. co was out of washington.

I've found the x gears to outlast the xr gears also, but only with the 1.65 gears. The tooth count is 23/30 versus 27/32. The driven gears are both the same circumference so the 30 tooth gear has thicker teeth. Prop accordingly. The 1.65 also has a mechanical advantage over the 1.50. Fountain did this for years on his boats. I get better all around performance with a 1.65 over the 1.5. Tested this using every prop combination. 30 teeth are stronger than 32.

I saw that Drew Marine is making those.
The 2012 37 AT in the classifieds has them and I looked them up to see exactly what they were.