that's pretty much what I was getting at, if a race built motor came with a warranty I bet it would cost 2-3 times as much.
a race motor is already a tough pill to swallow, but if your cool with your builder when bad things happen. he might help you out (parts at cost, labor discounts, etc.)
Most decent guys do that already so but that's a really gray area on warranty I don't expect anyone to warranty my motor if I had it built unless when its tore apart an building error is found then I'd just expect that part to be replaced not the rest I dunno slippery slope there