An interference engine pretty much eats itself when the timing chain/belt breaks. Basically, when it breaks all the important bits inside the engine smash into each other to the point where there's no realistic repairing it. There are quite a few engines designed that way, though I've never been quite sure why.
Lemme find you a link:
http://yourcarangel.com/2014/07/interference-engines-complete-list/
(I don't think most people actually know what an interference engine is, or why that's important.)
I have no idea how accurate that list is.
From a quick google search i do believe that my V8 is indeed an interference engine. So that might be fucked.
Well, the engine wasn't spun up at regular revs - correct?
If not, there's a slim chance that you got lucky. If it just went bang and broke without spinning up the pistons, it may be easily fixed.
I was in a lady friend's Toyota that had an interference engine when the timing chain broke. We were at idle at a stop sign. Amazingly, it didn't lunch itself right there on the pavement. One belt (or chain) later, and we were back in motion.
Yeah it was not running at all. it tried for an instant but that was it.
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