97 Camry timing belt..is it lethal when broken??

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Old 09 Nov 2004, 01:31 am   #1 (permalink)
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Default 97 Camry timing belt..is it lethal when broken??

Friend at work was surprised that I hadn't had the timing belt changed on my
97 Camry with 93K miles. He claims I'll ruin my engine if it goes and it'll
cost me 4 grand in repair work. I told him all it would do is leave me
stranded by the side of the road and cost me 3 hundred for a garage to
replace it. No engine damage at all. Who is correct?


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Old 09 Nov 2004, 05:17 am   #2 (permalink)
Geoff
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Default Re: 97 Camry timing belt..is it lethal when broken??

Hi,

You are - the 4 cyl and 6 cyl engines in this year are non-interference
engines, meaning that if the timing belt breaks, the pistons should not hit
the valves, and you are simply stranded with a dead engine.

Mind you, it still isn't a terrific idea to plan on doing it! The repair
would involve being very careful to get the belt timing right on the
camshaft sprockets, and although there are marks, I found it is rather easy
to be one tooth out. It is much better to have the old belt there to look at
first.

There seems to be a lot of controversy over whether the belt should be
routinely changed at all when the engine does light duty only. This is
defined as an absence of stop-start driving, towing, very cold or very hot
or dusty conditions.

Those who say YES (including me) subscibe to an interval of 100,000Km, or
about 60K miles, so you could think about it. I changed mine at 120,000Km,
and there was evidence of wear - the belt was "hairy" looking.

If you go ahead, give the belt idler pulleys, the water pump, and the
crankshaft nose oil seal a very careful look. Replace these if there is any
wear or seepage apparent.

Geoff

<psommerhalder@sbcglobal.net> wrote in message
news:rn_jd.6568$zx1.1544@newssvr13.news.prodigy.co m...
> Friend at work was surprised that I hadn't had the timing belt changed on
> my 97 Camry with 93K miles. He claims I'll ruin my engine if it goes and
> it'll cost me 4 grand in repair work. I told him all it would do is leave
> me stranded by the side of the road and cost me 3 hundred for a garage to
> replace it. No engine damage at all. Who is correct?
>



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Old 09 Nov 2004, 07:29 am   #3 (permalink)
ROBMURR
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Default Re: 97 Camry timing belt..is it lethal when broken??

>If you go ahead, give the belt idler pulleys, the water pump, and the
>crankshaft nose oil seal a very careful look. Replace these if there is any
>wear or seepage apparent.


Best to replace all these items at the time the belt is done including
camshaft seals and the 2 seals on the oil pump while your in there.
It may be another 90,000 before your next belt change so those
parts would have 180,000 miles on them....
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Old 09 Nov 2004, 10:36 am   #4 (permalink)
jjjsan
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Default Re: 97 Camry timing belt..is it lethal when broken??

Robmurr,
Is there a O-ring on the oil pump?

May want to replace water pump when replacing T-belt.
And Thermostat and water hoses.

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Old 09 Nov 2004, 12:37 pm   #5 (permalink)
ROBMURR
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Default Re: 97 Camry timing belt..is it lethal when broken??

>Robmurr,
>Is there a O-ring on the oil pump?
>
>May want to replace water pump when replacing T-belt.
>And Thermostat and water hoses.


There is a round O ring on the oil pump shaft and a big
rubber gasket that is between the motor and pump. That
big one failed on me causing a bad leak..
Water hoses on these cars are incredibly good. I finally
changed mine at 185,000miles as a precaution.
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Old 09 Nov 2004, 10:16 pm   #6 (permalink)
Curtis Newton
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Default Re: 97 Camry timing belt..is it lethal when broken??

On Tue, 09 Nov 2004 07:31:35 GMT, <psommerhalder@sbcglobal.net> wrote:

>Friend at work was surprised that I hadn't had the timing belt changed on my
>97 Camry with 93K miles. He claims I'll ruin my engine if it goes and it'll
>cost me 4 grand in repair work. I told him all it would do is leave me
>stranded by the side of the road and cost me 3 hundred for a garage to
>replace it. No engine damage at all. Who is correct?
>


4 cyl or V6?

I know for sure, the 4 cylinder will not result in any damage. Ours
broke travelling at about 75mph....besides leaving my wife stranded,
new belt and back on the road in no time.

Think that is the same for the V6.

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Old 10 Nov 2004, 07:40 am   #7 (permalink)
Daniel M. Dreifus
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Default Re: 97 Camry timing belt..is it lethal when broken??

robmurr@aol.com (ROBMURR) wrote in message news:<20041109133754.07087.00000347@mb-m10.aol.com>...
> >Robmurr,
> >Is there a O-ring on the oil pump?
> >
> >May want to replace water pump when replacing T-belt.
> >And Thermostat and water hoses.

>
> There is a round O ring on the oil pump shaft and a big
> rubber gasket that is between the motor and pump.


Essentially you are correct.
Actually the "O-ring" is more of a flat doughnut shape - correctly
speaking it is an oil seal, similar to those at the crankshaft and
camshaft, only smaller. It prevents oil from seeping past the rotating
shaft that drives the oil pump.
The "big" rubber gasket between the pump and block is actually a very
thin round cross section long flimsy piece with a wavy circumference
that snakes its way through the bolt pattern - overall very small and
light. When installing mine, had to coat it in a small amount of
grease to prevent it from falling out of position while installing the
oil pump cover. It installs into a groove that appears to be apx.
1/16".
I suppose it is a testament to the precision of Toyota machining that
this tiny bit of gasket contains the oil pressure effectively.
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Old 10 Nov 2004, 11:33 am   #8 (permalink)
jjjsan
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Default Re: 97 Camry timing belt..is it lethal when broken??

This is great info, I plan to change out T-belt and water pump in the near
future.
There is a oil leak near the front of engine, so I assume its the front
crank seal or one of the oil pump seals.
As far as other recommended items to replace in that area, I think there
is a belt tensioner bearing(s)???
When should that be placed on a 90 V-6 camry with approx 120 Kmi. No
record if ever replaced in the past.
To replace the seals on the oil pump, I'm under the impression that the
oil pan needs to be removed, is this correct????
Also has anyone had any experience with using generic parts vs. oem for
the water pump, seal, tensioner bearings, T-belt, etc.
I was going to use Toyoto oem parts, but may do a price comparison first.
Thanks for the feedback.
Jim

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Old 10 Nov 2004, 02:14 pm   #9 (permalink)
ROBMURR
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Default Re: 97 Camry timing belt..is it lethal when broken??

>To replace the seals on the oil pump, I'm under the impression that the
>oil pan needs to be removed, is this correct????


Nope, oil pump is not in the pan. Get a Haynes manual.

>Also has anyone had any experience with using generic parts vs. oem for
>the water pump, seal, tensioner bearings, T-belt, etc.
>I was going to use Toyoto oem parts, but may do a price comparison first.


You only want to do this once in a long time. No time to get cheap
with the parts. You will save a lot of money doing it yourself anyway.

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Old 14 Nov 2004, 03:37 am   #10 (permalink)
Viperkiller
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Default Re: 97 Camry timing belt..is it lethal when broken??

On Tue, 09 Nov 2004 07:31:35 GMT, <psommerhalder@sbcglobal.net> wrote:

>Friend at work was surprised that I hadn't had the timing belt changed on my
>97 Camry with 93K miles. He claims I'll ruin my engine if it goes and it'll
>cost me 4 grand in repair work. I told him all it would do is leave me
>stranded by the side of the road and cost me 3 hundred for a garage to
>replace it. No engine damage at all. Who is correct?
>

You are. But, time to change it anyway. Either way you'll have to
replace it. It's cheaper not having to pay towing charges.
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