It is great to see so much real conversation. Vtgt of you can make a post about your old car so it can be part of helping future v10 guys knowing how we got here.
As for the turbo stuff a lot of miss conceptions vs blowers. You can fine lots of 1000+ hp supercharged cars even 1500+ and more if you need a blower to make 2000 hp they make one
Once I find some old pictures and info I will dump them here for sure.
Like you said turbos and scs are more personal preference. If money was no object I would just build the motor, trans, twincharge , add meth, and perhaps small bottle of nitrous 
that would be fun right
All kidding a side I’d like to see any v10 s6 or s8 with forced induction. But at the same time the reason I like these cars is they are simple and big motor so why mess with that, if you you could get a c5 rs6, or any new s or rs variant (except rs5) once you have invested that money. I’m still trying to import a true c6 rs6 through mexico standby
Had a crazy thought, anyone think to do a stroked motor in one of these? Back in my m5 days Folks were doing stoker builds from 5.0 to 5.7, I now read Dinan upped their kit to 5.8, and other vendors who did 6.0. The latest results I googled were 580-600 rwhp. For reference a stock m5 is 390-415 (if my memory serve me right) depending on the Dyno.
Do you all think it’s worth considering looking into, a 6.0-6.2 may be kinda fierce, I’m sure it will be 25k+ like the m5s but it’s another option I’m willing to ponder for that all motor glory. Also we know these motor have some different between what is in the gallardo, but I’m curious what changes lambo did to their 5.2 to get 600chp in the huracan, as the 5.2 in the gallardo was more like 520-553 chp depending on year and model.
The more and more I read this thread the more I want to find a super high mileage s8 and go to town! :o keep your eyes out for one that needs motor work so I can rebuild
Rebuilding these engines is going to be just like rebuilding the B7/B7 S4 engines… no easy task. JHM or UGR ($$$) are the only ones I would trust with rebuilding one of these.
vtgt, let’s see how much you know about performance engines. Here are the stock specs for the Audi 5.2:
5.2 — 5,204 cubic centimetres (317.6 cu in); bore x stroke: 84.5 by 92.8 millimetres (3.33 in × 3.65 in)
Is it a GOOD candidate or BAD candidate for a stroker rebuild?
Still doing a little motor research, and after reading up more on the huracan it looks like the 5.2 is employing direct injection and mutlipoint injection which is a first on a v10, that and a few other changes and the huracan is 600 ish hp, they even put start stop on it. To the rebuild question I agree I’d only trust jhm to do it, but it may not be worth it, perhaps better idea to drop in a slightly used motor then rebuild unless you have loads of cash
Can we get the bore and stroke on the 5.2 Lamborghini stuff. That would help. Over all stroker motor is great but 5.2 v10 is very usable for making good power.
The bore and stroke is the same on the 5.2 liter lambo motor, and is even the same in the new Huracan as noted below.
http://www.lamborghini.com/en/models/huracan-lp-610-4/technical-specifications/
The same bore and stroke says we shouldn’t change anything bore and stroke wise on the audi s6 or S8 side as the Lamborghini motor goes to 8000 rpm so we know we must have a good piston to rod stroke ratio.
If you are really considering going that deep into the bottom end I’d like to note there have been issues we have seen with cylinder wall scoring with out any performance enhancements. There may be damage that wont show up until we start making serious power. If we get to that point id consider forged pistons a look at our rods (other audis are prone to bend) and cylinder sleeves if there is damage. http://www.titanmotorsports.com/lamborghini-gallardo-sleeves.html I know they are not cheap but if the engine already has cylinder wall damage a new engine is about the same or more why not go the route of the upgrade.
This is actually a great point with the sleeves. Some less then educated types wonder why the aluminum v8 motor cost so much to build when you sleeve it. Well you can see right here the sleeves for the v10 are 5 k and that’s not installed that’s just 5 k for the sleeves.
thats a pretty penny, how much does sleeving the v8 cost?
http://larryspower.com/engine/DartonSleeves.html link lists some v8’s 3400 you’d have to ask if they would do a custom job for you so I’d add some to that. Thats if they agree to do it.
How wide spread is this issue for the audi v10? I feel like I keep gunking up this thread…I guess it all is useful for th project in some ways.
Common enough to be a known issue
Although now all I can think about is an all forged internal v10 engine Sleeved with headers ready for pretty much anything I want to throw at it. Lol my messages should come with the disclaimer that I like to go to the nth degree with any concept.
That’s kinda where my head was going haha…s
I guess my question was more so how common is the contribtuion to overall mechanical failure, as I’ve seen many s6 and s8 with over 100k without extreme catastrophic failure. Is it more of a when not if situation ?
By 100k miles usually most catastrophic issues will have made themselves known
But as far as how often guys any ideas??
That machine shop is local to me (~5-10 minutes form work). Are you in eastern CT by chance?