KAD 43 Problems.

[oldgit]

Belt tensioner collapses belt shredded , no cooling then engine seizes.
Engine turns over and run briefly when cold.
No horrid noises.
Next step is ??????

 

[Mr Googler]

Buy a lottery ticket?

 

[simonfraser]

take the kad out, sell it for scrap, rebuild the stern:

 

[PaulRainbow]

Belt tensioner collapses belt shredded , no cooling then engine seizes.
Engine turns over and run briefly when cold.
No horrid noises.
Next step is ??????

Take the engine apart and see how badly damaged the bores/pistons are. Replace knackered parts, rebuild engine.

 

[Montemar]

Engine out and check pistons and bores. Presumably at least one had seized though free enough to run engine at tick over for mooring - I speak from experience - check the oil level as it will be used quickly. In my case all bearings were replaced and the full VP overhaul kit fitted. It took months, cost mucho dinero and left a hangover that took months to lift.
Good luck

 

[volvopaul]

Belt tensioner collapses belt shredded , no cooling then engine seizes.
Engine turns over and run briefly when cold.
No horrid noises.
Next step is ??????

Strip it down

 

[volvopaul]

I have a41P being dropped off tomorrow and another to look at next week , it seems the season of destruction

 

[Seastoke]

I have a41P being dropped off tomorrow and another to look at next week , it seems the season of destruction

You must have a strong kitchen table.

 

[simonfraser]

lots of highly stressed / infequently VP's being started at the beginning of the season

 

[Momac]

Belt tensioner collapses belt shredded , no cooling then engine seizes.
Engine turns over and run briefly when cold.
No horrid noises.
Next step is ??????

How was it determined that the engine seized? Was it run with the temperature alarms sounding and if so for how long? Could the failed belt not have caused the engine to stop suddenly by fouling the pulley?

 

[westernman]

Change the oil - it will have been cooked.
Then I would try running it and see if anything horrible is happening.

Some engines can withstand getting cooked for a while without too much internal damage.

If it does not run properly, don't try anything else and stop it right away.

It will need a strip down.

 

[oldgit]

Thanks for all comments and suggestions.
Will being speaking to skipper of boat in next day or two.
Would doubt that the belts would stop the engine.

 

[DavidJ]

How was it determined that the engine seized? Was it run with the temperature alarms sounding and if so for how long? Could the failed belt not have caused the engine to stop suddenly by fouling the pulley?

Interesting point.
The same happened to my KAD43 although the pulley demolished itself while on tickover after a run. The belt jammed itself and the engine stalled. Fortunately no overheating for me.

 

[Montemar]

Did the overheat alarm go off?

 

[Portofino]

Needs s strip down .Hope fully it can be rebuilt with a suitable kit ? Unlike this block .

 

[Momac]

Would doubt that the belts would stop the engine.

Agreed but worth investigating.

 

[nicho]

I have a41P being dropped off tomorrow and another to look at next week , it seems the season of destruction

You are scaring me now!,

 

[Mr Googler]

Nah…..it’ll be engines from people not on the forum who don’t know how to look after them properly…..thanks to @volvopaul contributions over the…..decades!

 

[volvopaul]

You are scaring me now!,

Never raced or rallied

 

[SC35]

Change the oil - it will have been cooked.
Then I would try running it and see if anything horrible is happening.

Some engines can withstand getting cooked for a while without too much internal damage.

If it does not run properly, don't try anything else and stop it right away.

It will need a strip down.

This.

If it runs smoothly after an oil change, you might have got away with it.

But mostly likely, not