Merc's 1350 set complete with the M8 drives. Personally I've seen #6 units spec'd on applications in upwards of 1600+ HP and still hold together. So I'd imagine the M8's could handle that much more without issue, though everything has its limits.

http://i133.photobucket.com/albums/q...l-of-1350s.jpg

http://i133.photobucket.com/albums/q.../M8-Drives.jpg

So in these diagrams, is all of the space that surrounds the verticle shafts hollow and filled w drive fluid?

It's interesting that the NXT puts the lower drive gear behind the propshaft carrier instead of in the front of the case like most Merc drives. This was the weak link for the right-hand rotation TRS drive. I wonder if we start seeing NXT failures due to the drive gear pushing away from the pinion, just like the TRS had????

Nice shop CAM!

Here is the limits

T53,s and sixes..... 15 hours is all ya get.
http://inlinethumb55.webshots.com/26...600x600Q85.jpg

I just replaced the gimble rings on our #6's and they are heavier duty than the NXT gimble rings...I can't imagine the
M8 gimble ring would be weeker than the #6 gimble rings?

NXT Drives
 

Hi Cam,
Thanks for the cutaways. I am flying out to the west coast this Friday to buy a new boat with 2-700sc and NXT drives. My plans are to add horsepower after the warranty runs out and I was wondering if the NXT's could take 1000hp per drive or would I have to change to #6's, change the transmissions and move the engines forward. The reason I am moving up is to get away from the Bravo issue's I have with my current boat. Do you feel the NXT's are good, sturdy drives?

Well it depends on how you use the boat and under what conditions. If you like to use a "lead hand" and are normally in medium to rougher waters I would not reccomend the NXT drives at the 1000+ HP levels. Most in part because if or when they break its going to be at WOT or close to it and I'm sure the last thing you want to hear is the sound of metal violently shearing as you come to a hault to see the drive bobbing around held on by the trim rams.
The bottom line is, the NXT's are just not designed for those power levels and yes you could "get away with it" for a time but its too much risk to even bother. Go with the #6 units and boat with piece of mind that you can hammer the throttle all day without worry.

Dont let this be you! ;)

http://i133.photobucket.com/albums/q...Adams_3841.jpg

Do you still have that shaft? I would like to do some testing on it.

Nice shop, nice boat......is anyone else disappointed with the look of the 1350?

I know this is a revolutionary engine, however this and the new 502 don't look very pretty IMO.

Is this a sign of what is to come? The next gen of boat engines look like what is under the hood of my mercedes. I will miss the bling, the headers that you can see your face in, sculpted fuel rails and blowers that did not need plastic covers over them. At least polish the cat converters :D

They can still be gussied up somewhat! ;)

And once you ride in a boat that has these motors, you wont care if they look like a pile of dog crap...They are simply AMAZING!!!