You are waaay off base,my boat is also procharged,when I run at high speed I run a 32 piitch labbed prop,boat runs close to 100 mph. When I'm just driving around,I usually run a 30 pitch labbed,I have also pulled tubes and skiers,my motor made 1115hp on the dyno but guess what,I can crack the throttle to about 50% with tabs down a few clicks from neutral and then back it off and effortlessly pull a tube or a skier at 2800-3000 rpm's between 25-40 mph. The hardest load it will ever see sure isn't at this time,it's when the throttle is whacked and held from a 30 mph punch-off when racing other boats ordoing speed runs. If I throttled it that hard while towing someone it would rip the rope in half or hurt them. A stock boat has no problem towing someone with only 400 hp/ft lbs of tq,why would the same boat with triple the power need to use any more power or be under any more strain towing equal loads?
As far as "franks' work,3 or 4 years ago GPM called me asking about drives and why his weren't lasting very long. Yeah,he has waaay to much hp BUT I re-call him calling to ask if I thought it was normal for a drive that was just rebuilt and never ran yet to turn so hard you literally needed a pipe wrench to turn it (off the boat). At that point I offered to tear his spare never ran yet drive down to see what was going on for next to nothing or to walk him thru it if he bought his own tools but he declined , the following year I sold him a set of treated gears that lasted less than 5 hours,again I offered to inspect and reassemble his lower but he went with a local guy I assume to be "franks" marine. The real answer will be how long his drive last after DPM does it. Dick is a nice guy,pays strict attention to detail and uses the good bravo upgrade parts but he doesn't posses a "magic wand" that will make a drive indestructible,Smitty

So "I'm waay of base..."
 

1. We're not talking about a stock boat. That comment has nothing to do with I said. Of course lots of boats pull toys etc with no problem. I was referring to this particular setup.

2. I used a scenario of my boat trying to pull a skier cause Fountains labor quite a bit to plane. There have been countless comments or questions on here about that. I realize he has a DCB and I stated that examples will vary from boat to boat but that he's really pushing the envelope past the post office...

3. I was not trying to say that he'd have "trouble" pulling someone out with more torque when a stock boat only has 400lbs. What I was trying to communicate is that all that extra drag of getting a water skier up does put a lot of extra load on the drive even if you happen not to bury the throttle. Especially when horse power doesn't kill things. It's torque that kills when you now have the ability to force a drive train to speed through it's normal pace. Then you have to argue about whether or not your skier get's up quick, slow, learning, etc............... You know where I'm going.

4. I too have broken things and I know that wot is also a rough time for a drive when over powered but this post didn't even point in that direction as it's already been said that he's pushing it beyond the realm.

5. If you really don't think that pulling a skier in this situation is adding to his heartache than I'd respectfully question your judgment on what's really happening.

6. Regarding the pipe wrench story. Doesn't sound right but it doesn't concern me with being off base.

7. You started out chasing me with the idea that I'm wrong because you're running close to 100. There's a he11 of a difference between 100 and a quoted 148.

Sometimes we read the sentences but don't hear the words..

The bottom line is that it's no secret why there's so much trouble with this application. Again, I know nothing about the spare not being built properly but I do know that if you don't get it just right they won't live for any power range.

What's REALLY "Waay off base" is the fact that all of us are still on here going back and forth over this crazy setup and as I said before; we've officially beat the dead horse and I can't swing anymore. My little arms need to recharge.

Have a nice one. :ernaehrung004:

I rarely tow a skier, I tow my daughter around on a tube a couple of times a summer, she's 12. I run a Procharger that doesn't make boost till I'm above 3500 rpm. I use a 26 Bravo 1 prop.
I guess I should mention 1400 hp is only when the motor is turned up, normal running is pump gas and 7 psi.

Interesting thread, I think I will stay behind the couch:drink:


:party-smiley-004:

loctite 271 to be exact ;)

I'd agree there is a difference from 271 to the cheap stuff. Ever use the catalyst in conjunction with it?

Works really well.

No, haven't done that.

I was putting a lower back together yesterday,
and saw that 271 was the threadlocker of choice.

I had 242 and 262 laying around but no 271,
and with all this talk of pinion nuts coming loose,
I ran up to the parts store to get some.

GPM, were you charged for new parts that were not new or just a rebuilt?

On the tow skiers, I never though someone would tow a tube or skier with their high speed prop. I guess I know with my procharger boat I would be hard pressed to get some one to hang on long enough till the boat planned out with my high speed prop. Put a 26 pitch prop on and I can rip the rope out of almost anyone's hand. My last boat had a 800hp turbo motor in it and low end was just like the procharger. I think I had over 200 hrs towing skiers or tubers with no 1989 model bravo breakdowns. Trick was just easing into the throttle to get them up.

It was supposed to be a total rebuild, replace what ever parts that were needed to make it right,

Might be the garage door opener is turning to many RPMS. Good luck on the rebuild.