Completing a IM on Minimal Training.

Comes down to your definition of "minimal".  In my mind, minimal would be no less than 10 hrs/week.  I think if one focused on the long stuff they could fininish.  That is, swim non stop for at least an hour, maybe 1.5 hrs if you are as slow as I am.  Long runs of at least 18 miles and long bikes of at least 5 hrs.

The real issue is how much you want to torture youself.  It is my experience that they better trained I am, the more I enjoy the event.  You still have 2 months to train.  I would suggest you get in as many of the long sessions as possible.

~Mike

I have done it...don't recommend it. Since you have to sign up a year in advance, I had signed up for the 2008 IMAZ race, but then realized that I didn't want to sacrifice anything for training for this race. I had spent way too much time away from my family training for other races and didn't want to do it for this one. About 10 weeks out, I went for an easy run and could barely make it down the street. I had to get serious and I basically trained right up until race day. The swim was fine, the bike was fine, but I was doing the IM shuffle for 26.2 miles and that was no fun. I did get to spend some quality time talking to some BT buddies as we were all suffering together
I was going to write my own training book called "8 weeks to a 16 hour Ironman", but figured nobody would buy it 

If you can, get your bike and run fitness up now. And just be prepared for a long day on the run course.

I am doing Silverman in November-I do Olympics every other weekend just a little over 2hrs...But my training is not where it should be for an Ironman-I am scared...

I haven't done an IM with minimal training, but I believe it can be done. 

The biggest challenge is setting your mental expectations to align with your training (and race) realities.  If you can do the swim in 2 hours, bike in 7:30, you still have about 7:30 available for transitions, run, and any contingencies that pop up on race day and still get the official finish.  Accept that lots of people are going to go past you on the bike.  Accept that you'll be out on the bike for a long, long time.  As long as your butt can handle it, you're free to enjoy the day and conserve as much energy as you can.  Once you get onto the run, it may be the IM shuffle, it may be a walk, but again, you're going to be out there on the course all evening with your own thoughts.  As long as you can channel those thoughts towards a positive finish, you can enjoy the "run" as well.  It might hurt, and you can probably expect that inner voice to spend a lot of time questioning why you're doing this. 

What you can't afford to do is not train well and go out and try to hit splits as if you did train properly.  Nor can you beat yourself up over the difference between how fast you are (with the limited training) and how fast you think you should be if you dedicated yourself to proper training.  This really is where people get into the "sufferfest" situation. 

I have with minimum of 6 hours avg per week training for IM Moo 2007.

You can check my 2007 training months information, and then read my IM Moo 2007 RR.  I think you'll be entertained, to say the least.

End result is an Ironman finish time (on a very tough bike course) in 15:13:46

I need to add that this was the 2nd triathlon that I ever did.

Yes, it can probably be done, but would NEVER recommend doing that.

I'm guessing that if you up the training a bit between now and then you will "get through it". But is that enough? Are you really prepared to be in pain, questioning yourself, and not loving the experience?

Ok the first 2 are going to happen no matter how much training you do, but "just getting through" would not be enough for me. I would want to know I am fit enough to love the experience rather than only being in pain.

Gerrard

I've done some IMs on pretty minimal training.  In 2004 our first child was born in July, and for the 8-9 weeks leading into IMWI my training consisted of nothing but one long workout per sport per week.  One long swim, one long bike, one long run per week.  I'm sure my average weekly volume for my main build into that IM was less than 10 hrs per week.  Here's the report, if you're interested.  

I made sure to get in at least a couple of century-plus rides, built my long run up to 3 hours, and built my long swim up to 90 min.  But, that was it.

I considered that "minimal", and it worked out fine for me...finished in under 13 hrs.  But, this was my 3rd IM, so I already had a reasonable residual endurance base, and knew what I was up against.

Based just on my personal "experiment of one", I'd worry less about total weekly volume, and work on building your long rides and runs up to the 6 hr and 3 hr range, respectively.  It's been my experience that the weekly long ride and long run are key.  Don't skimp on those.