EDIT: to sum up - WOULD DO AGAIN!! I adore these cars. Hondas in general. I would absolutely hands down rebuild another and another. Working on a german car right now and it sickens me. Doesn't matter, I'd prob do that again too - but the Honda YES!! [/edit]
Yeah I did my 4 speed B7TA (2000 Ody) back in November roughly. Never done a trans before either. I just dove into it. Only thing people screw up royally is not having an input shaft holder. Aside from that, you have the manual obviously, and that's the only reference I used.
I had all kinds of time, I didn't need the car running. I bought it broken. So I pulled the tranny, inspected everything, ordered ONLY what I needed, and that was that. I was buttoned up with upgrades for a little over $550? - ish?? I outlined in several posts some of my upgrades and pricing and everything. There are good deals to be had, but I chose to go with OEM frictions and steels. But really Raybestos GPX (?) are prob quite good too. I don't know who makes the gearspeed frictions, but they're prob ok too for the balance of the service life of the vehicle. Or if not... so another 160K miles maybe you rebuild the trans again... that would still be a helluva deal. Master Gearspeed Overhaul Kit: 1999-2001 Honda Odyssey (B7TA/B7YA) I had seriously contemplated this... but again, I ended up going OEM from Majestic Honda.
The input holder is pricey. Dad made it for me, I had to modify it a bit from the intended design, but it was nothing too drastic.
Removing the trans from the car itself is not an insignificant part of the job. The trans itself is doable... small parts washer or a bucket and a few strainers from the dollar store, some chip brushes (don't use the plastic brushes, use actual chip brushes), totally doable. Trans removal, if at all possible, remove the exhaust. It will make the job a breeze. I didn't want to remove the exhaust, the rusted cat converter nuts were essentially lumps of rust. no way I was touching that... I can deal with it, just didn't feel like it at the time. So I paid the price in heavy lifting instead. I removed the trans myself... I mean, all by myself squeezed into the dr side wheelwell, birthing a whale calf from an unwilling shrimp. lol
Anyways, if you're interested I did a photo dump in this album.
Maybe one day I'll put together a writeup as best as I can.
I'll do my best to assist, but really the job is in your hands once you start. As for how long... like I said, I wasn't concerned about time. I did my inspection, waited a week or two for parts... did cleaning, assembly. I don't know, I can look at the date stamps on the photos in my phone, but I wanna say 3 weeks total.