Honda Repair: 93 Civic SI Engine Noise, berrings, hope ive

Question
Hi Rusty,

I got my 93 Civic SI Aug 2005 with 119,000km on it.  First thing I did was change the oil and battery.  It's due for an oil change and the last time was about 5 months ago and it's now at 138,000km.  Timing belt haven't been changed.

Yesterday, I was driving and hear some noise from the engine that lasted about 10 seconds.  Today, I started up the car and started driving and the same noise.  I pulled over and popped the hood.  The noise lasted for about 30 to 40 seconds.  I sound like grinding metal coming from the engine.  After the noise stopped, I drove it home, with was about 13km (no noise for the duration of the drive) and haven't turn it on since.

Any help would be appreciated!  Thanks!

Answer
Sounds like someone ran it out of oil at one stage because its your bottom end berrings and cam berrings have burnt the nickel lining off and is now running on metal so your engine needs a total rebuild or you might have to find another engine, Does it use oil? when you dissconnect the oil breather hose does it suck or blow?
do you loose any power through this noise?
does it grind or knock?

hope ive been of some help

Cheers Rusty