Blown Engine > Dropped Valve

[Phil Payne]

> Looks like Exh. Valve #1 just snapped off at the head.  Looking back, I think
> I may have driven half a lap with the engine like this before I realized what
> had happened, I remember boost and power beginning to fall and wondering what
> was wrong, it wasn't until the Carousel (Sears Point) that something was
> drastically wrong, with a cloud of white smoke billowing out the exh.  I believe
> it was at that point that the piston floor finally gave way, filling the comb.
> chamber with oil - until that point I was running on 4 cyl.

> Anyhoo, enjoy, comments welcome.

>From n thousand miles away, it looks like a blocked injector pushing combustion temperatures
through the roof on  #1.

I think an injector flow test would be a part of any rebuild _I_ attempted.

--
  Phil Payne
  http://www.isham-research.com/quattro
  +44 7785 302 803