Timing Belt Shredded

"N.E.Ohio Bob" <rgstroud.RemoveThis@neo.rr.com> wrote in
news:46f3dd82$0$32476$4c368faf@roadrunner.com:

> "02 Civic, 7000 miles on new Honda belt and water pump. Belt
> began
> making noise, and while driving to have looked at belt broke and
> engine quit.
> Belt scraps were in long pieces of rubber coated string. Can see
> some
> wear on lower cover. Bent all the valves.
> Anyone out there seen a belt give up like this?
>
> Bob
>


Can happen if tensioner seizes. Was the tensioner also replaced 7000 miles
ago?

--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
 >> Stay informed about: Timing Belt Shredded 

loewent via CarKB.com wrote:
> Sounds like either a bad tensioner or an overtightened or defective belt.

indeed. or a seized water pump.


>
> Either way, you are now looking at least at about $1000 repair bill to repair
> the valve train. Depending on the damage to the timing cover, you may need a
> new one (possibly could get from a wrecker, but unlikely). Also, the Crank
> angle sensor could have been damaged, its a $130 dealer part.
>
> When this happend on my sister's 99 civic, it ended up costing over $1200.
> Also, not all of the valves may be bent. You'll need a new head gasket and
> head bolts as well.

don't need new head bolts in the d-series motors - ok to re-use originals.


> Go for a honda head gasket for sure.
>
> t
>
> N.E.Ohio Bob wrote:
>> "02 Civic, 7000 miles on new Honda belt and water pump. Belt began
>> making noise, and while driving to have looked at belt broke and engine
>> quit.
>> Belt scraps were in long pieces of rubber coated string. Can see some
>> wear on lower cover. Bent all the valves.
>> Anyone out there seen a belt give up like this?
>>
>> Bob
>
 >> Stay informed about: Timing Belt Shredded 

Work was done by professional Honda-Acura mechanic. He is sole
proprietor in his own shop. He has many years of Honda dealership
experience, and does about three timing belts a week.
Tensioner wasn't replaced, but feels fine. Water pump was new (Honda)
with belt, and also rotates freely and has no rough spots on gear.
Will replace all valves and needed gaskets. Probably will replace
tensioner too.
Can give more info next week as work progresses.

Thanks for your info. bob
 >> Stay informed about: Timing Belt Shredded 

On Sep 22, 6:22 am, "N.E.Ohio Bob" <rgstr....TakeThisOut@neo.rr.com> wrote:
> Work was done by professional Honda-Acura mechanic. He is sole
> proprietor in his own shop. He has many years of Honda dealership
> experience, and does about three timing belts a week.
> Tensioner wasn't replaced, but feels fine. Water pump was new (Honda)
> with belt, and also rotates freely and has no rough spots on gear.
> Will replace all valves and needed gaskets. Probably will replace
> tensioner too.
> Can give more info next week as work progresses.
>
> Thanks for your info. bob

How many miles were on when you replaced the belt/pump? The guy
shouldn't give a discount, he should do it for free. He was the
mechanic that did the "job", he should be responsible for the repair.
Of course, if he did this job and messed it up, why would you want him
to do another job for u?
 >> Stay informed about: Timing Belt Shredded 

N.E.Ohio Bob wrote:
> Work was done by professional Honda-Acura mechanic. He is sole
> proprietor in his own shop. He has many years of Honda dealership
> experience, and does about three timing belts a week.
> Tensioner wasn't replaced, but feels fine. Water pump was new
> (Honda) with belt, and also rotates freely and has no rough spots on gear.
> Will replace all valves and needed gaskets. Probably will replace
> tensioner too.
> Can give more info next week as work progresses.
>
> Thanks for your info. bob

fwiw, i discovered that it's possible to over-tension the timing belt if
the tensioner bolt is too loose when adjusting. book spec is that it's
half a turn loose - on this occasion, i'd made it looser, so that the
base of the tensioner pulley had tilted. on tensioning, the base
leveled out and therefore pulled the belt a lot tighter than it should
have been. i discovered this later when another project required
re-entry, and on loosening the tensioner, not only could i see the belt
loosen, but the cam gear relax - it had been elastically distorted it
was pulled so tight!

bottom line, if he's a pro, he knows what he's doing. but we all make
mistakes on occasion. short of a massively defective belt, [possible,
but unlikely], that would be the only other thing i can think of to
explain the problem. other potentials such as mis-routing the belt,
i've seen, but are usually immediately evident and don't get the vehicle
out of the shop.

oh, and the other thing to look out for with an over-tensioned belt is
potential damage to the cam bearings. in fact, the cam doesn't even
have bearings, it sits directly on the aluminum casting and is oil
lubed. under normal belt tension, that is sufficient, but under excess
load, the oil film that normally separates can get too thin and the
aluminum can get gouged. if that's the case, the head is done and needs
to be replaced.
 >> Stay informed about: Timing Belt Shredded 

loewent via CarKB.com wrote:
> wow man that sucks.
>
> If the guy is worth his salt, he should at least offer a discount on labor to
> rework your top end...
>
> It is a rarity to hear that someone who is actually on top of the maintenance
> plan gets pooched like this....

or maybe they didn't actually do the work!


>
> t
>
> N.E.Ohio Bob wrote:
>> Work was done by professional Honda-Acura mechanic. He is sole
>> proprietor in his own shop. He has many years of Honda dealership
>> experience, and does about three timing belts a week.
>> Tensioner wasn't replaced, but feels fine. Water pump was new (Honda)
>> with belt, and also rotates freely and has no rough spots on gear.
>> Will replace all valves and needed gaskets. Probably will replace
>> tensioner too.
>> Can give more info next week as work progresses.
>>
>> Thanks for your info. bob
>
 >> Stay informed about: Timing Belt Shredded 

"N.E.Ohio Bob" <rgstroud RemoveThis @neo.rr.com> wrote in message
news:46f3dd82$0$32476$4c368faf@roadrunner.com...
> "02 Civic, 7000 miles on new Honda belt and water pump. Belt began making
> noise, and while driving to have looked at belt broke and engine quit.
> Belt scraps were in long pieces of rubber coated string. Can see some wear
> on lower cover. Bent all the valves.
> Anyone out there seen a belt give up like this?
>
> Bob

If Honda did the belt replacemenet, it may be under warranty (12 mo/12000
miles) .
 >> Stay informed about: Timing Belt Shredded