You know, it looks like the belt is still strung....

I see a Porkensioner...do you think there's any chance it took up enough of the slack to keep the cams close to timed?

Considering the gear cut completely through the cover, you were moving pretty good when this happened, so I don't mean to offer too much hope.

BUT (again) the belt may have still been on the gear for quite a while as it cut its way through the cover. Just maybe......

 

No Bill the gear cam right off and I was doing 70k in second so around 2500 maybe? anyway, with that momentum and the drive shaft force it would have rolled it over a few times.
It just quit and I new it was bad. popped the hood and called a tow truck

 

Are Euros any different then US as far as interference goes?

 

All 32 valves are interference.

 

The pictures look like the forwards portion of the oil pump gear is worn quite a bit more than the rear. If that's the case, it would seem to indicate that the engine's been running with a problem there for a while already. Was there a timing belt tension light warning before the complete failure?

 

With the Porkensioner, there is no warning systen. Unlike the stock system, it is spring-loaded, so it might take up a fair amount of slack until the belt finally came off, so a low tension warning might not trip even if the system had one. It sounds like the gear ground through the cover and the system failed rather suddenly.

 

dont bother with putting it together for compression test. trust me. or at least merlin, bill and others. you will absolutely know which are bent, read a lot of them. sorry to hear it. now is the time to do what your heart desires, verses wishing you had. meaning cams, upper control arms, etc. trust me
good luck brad

 

Brad that sucks man. Sorry to see that. Same thing happened on the Yellow Bastard but I caught it at the shop I heard a strange noise and on inspection I noticed the timing belt tracking all over the place. Further inspection found the oil pump gear to be loose on the pump shaft. I replaced the gear and lucky had no damage. But that's a 16V engine.

Like I said I'm really sorry to see that happen to your car after all that work.
Sean

 

If you make it down for INDY come by and say Hi.My Supercharger set up might be available after the race.

 

Hint, Hint....

 

Brad, Big Sh*t man
there's always something that makes you

 

Wow.. I feel your pain 928MAC. you've been through a lot with that car. That belt does look (to me) like this problem has been present for some time. Speculation: Oil Pump gear was loose (for some reason) and as it wobbled on the shaft, the wear occurred on the gear, and once the wobble became too great the gear snapped the shaft. I wonder if when you installed the gear if you had the spacer in place, and if you used loctite.

In any case you are almost guaranteed to have multiple bent valves, however stringing another belt and gear on to rotate the motor and check the compression is not a bad Idea. You may be one of the lucky 'never bent a valve' club members. #subscribed!

 

Awful turn of events Brad. I am so sorry this happened. However, I know you will make it right.

 

Thanks guys, the worst part is that I have other vehicles that need maintained. My tundra needs a rad and the passat needs a ABS module and an out of province inspection so that amounts to 3 G or more

 

BTW Malcolm said he knows of some 87 heads.
Will they be the same as my 89 10.5 to 1 GT heads