1 timing belt broke, still running

That means one of the engine bank (1-4) or (5-8) has bent valves...just to start and who knows what else got damaged... oh boy...

The Ferrari engine is an interference motor that is precisely timed by the cam belts/timing belts. Basically the timing belt connects the crankshaft with the two camshafts. This allows the valves to open allowing air into the engine at the right time. If the belt breaks then the crankshaft along with the piston and rod assembly will still move but the valves will be still. This can cause the piston to collide with the valves which can cause damage to the pistons, valves, and the entire head in some cases.

 

Just bent valves?





Very unlikely.



OP,

How long have the belts been on the car?

 

Oh my... I think you need to stop running the engine.
Your mechanic will need to start uncovering the engine now to see whats damaged...
what more can I say... not good!
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Heed Mike's warning now! Otherwise the pistons will continue to slam the extended/non-moving open valves.

 

Yeah... it scared me when you said that it was still running.

My car had it's cambelt break a few years ago and it was a pricey repair back then. However, it was reported to occur at idle which caused the engine to stop; no restarts were attempted.

 

I have the docs at home so yes, I can post that info this evening. Worth noting is that it occurred during the late 90s.

 

Not good. When did the belt break? RPM was where? Who did the belts last time?

Lino

 

What year car is it?

 

Okay, the problem on mine was on the one bank only so:

They pulled the motor (easier to degree the cams) and both heads. Replaced 8 valves, all new guides (32), seals (32) and gaskets. Complete head work including surfacing. New cam belt kit w/bearings and all other belts plus a few odds and ends (two motor mounts, etc.)

30 hours labor. However, the head work was "sublet".

Total including sublet head work = $6472.02 in Nov 2002 dollars (independent shop just outside of Atlanta, Ga)

At the time, the car was only 14 years old with 23,949 miles. Well within the requirements of the owner's manual regarding inspection/maintenance requirements. And I believe, before Ferrari issued their 3 yr / 36,000 mile cam belt change policy.

 

Will the cost be under the $10k? Sorry to hear this happened. Thanks for the update by the way.

 

Mike what was the cam bloked with and where did it come from, was it silicone from a recent job on the engine or some other gasket material? I'm just trying to think what could block a cam oilway...

 

Perhaps a crumble of sediment?
Centrifugal forces swirl heavier parts (metal flakes,carbonised parts,..)in the oil into the extremeties of the crankshaft ( bore holes).
Those particles build up slowly over the years and become a hard sone'ish material. Now with better oils and it's cleaning additives, it can solve those stone'ish parts and they can be taken in the oilflow to end in a narrow parts which it can block.

When doing a rebuild of my Fulvia engine, I removed the allen key bolts in the crankshaft and discovered a lot of hard residu in it.

Not sure it's an eminent danger we all have to dive in to, but it can occur. In the Fulvia scene it happened a few times I know of...
For me it was an absolute No No for extra cleaning additives in oil.

Mike, can you tell us the problem that caused the blockage?

 

The mechanic said it was a paper substance that could have been a piece of a gasket.[/QUOTE]





What brand of oil filter was on the motor?

Is there any chance he still has the oil filter?

Is there any chance he still has the piece of debris that blocked the oil passage?




This is why careful examination of the damage and failure is important. It is very possible you could have had someone else pay for this job.