My question is can you rebuild a coyote engine, by rebuild I mean bore out and put in new pistons on say a high mileage one and with that being the case is it worth it over buying a crate engine? I am new to the coyote world but have built old school V8s and an LS 6.0. I am use to the cast iorn blocks that can be over bored. I am not looking for displacement just want to be able to bore it out to clean it up. I really don't know if they even wear enough to need it but I have the kind of luck that if I buy a good used engine and open it up it will need to be rebuilt, it happened with my 6.0 that was running and only had 78K miles on it, the bearings were copper colored and I had to bore out the cylinders. When I want a performance engine I have always built them because for the same money as a crate I can have a forged rotating assembly with just my time and I like engines so that isn't a big deal. I don't see much on building coyotes I don't know if it's because everyone has deep enough pockets that 10K engines are no big deal and they pay a shop to install them or is it that the engine is a 1 time use and you need a new block to start over. What I want is a coyote with forged rods and pistons, I have a roush blower on my car now and I know guys get away with more but I like insurance that I can beat on it and it won't blow apart. I would also do oil pump gears at a minimum if I ever have the engine out. I currently have 100K on my coyote and am itching to add more power but I like to know it will for sure hold it. I would like to build for say 800whp and make around 600 to 650whp. I enjoy building engines but I see coyotes are expensive even with high mileage, I have found that a new crate engine upgraded to gen 2 components for $7200 is a much better deal than a $4000 100K coyote. I can't see spending that much on an engine then building it and then maybe finding it has too much taper and needs to be bored but can't. Any experience with this would help, I would hate to buy a 10K alluminator engine but if I need to I will.