Check your owner's manual for the recommended replacement timeframe. 60k
is not out of the question, but some engines have a belt with a longer life.

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Unforunately I bot the car used and didn't get a manual ! And my concern is
that why do it if there is no problem !
Why dis out the money if no problems are occuring ! Wouldn't I know that
the timing belt is slipping or going ? Surely I would feel this when
driving ? And then have it looked at !
Robbie Wilson - 22 Mar 2005 20:20 GMT
>Unforunately I bot the car used and didn't get a manual ! And my concern is
>that why do it if there is no problem !
>
>Why dis out the money if no problems are occuring ! Wouldn't I know that
>the timing belt is slipping or going ? Surely I would feel this when
>driving ? And then have it looked at !
Actually timing belts are one item that breaks quickly suddenly and
without warning. the reason is that it slowly gets worn and cracked by
the heat of the engine but it has little teeth on it that ride on the
upper camshaft pulley and lower crankshaft pulley. thus even when the
belt is frayed, worn, and about to break it will still not give
warning usually. there is a mileage interval when it *should* be
changed, but Your Mileage May Vary (YMMV) :)
if it breaks you will have a tow bill to pay at the least, if the
valves get bent in the process (someone else would know if this could
happen) then the bill could be several times the price!! i would take
my car to someone else besides the dealer b/c of the high parts cost
and labor costs! again others will disagree.
Divlja - 22 Mar 2005 20:31 GMT
Thank you all for the help !
Some wonderful information that will help me make some decisions !
TopPoster - 22 Mar 2005 20:30 GMT
You should do it at, or near, the recommended interval to avoid
catastrophic engine failure. This belt is internal to the engine so
there are no visible signs of wear and could fail without warning.
> Unforunately I bot the car used and didn't get a manual ! And my concern is
> that why do it if there is no problem !
>
> Why dis out the money if no problems are occuring ! Wouldn't I know that
> the timing belt is slipping or going ? Surely I would feel this when
> driving ? And then have it looked at !

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Alun and Angela James - 23 Mar 2005 23:06 GMT
The belt on my 1989 Mitsi VR4 went prematurely because it had been badly
installed and the head work (15 bent valves, guides, thankfully no pistons)
cost me $6.00 less than $2k and I still had to have the belt replaced - only
about $70 and built in to the main cost.
Moral? Get a car with a chain such as a Primera or shell out and get it
done. You truly can't tell and Murphy will make sure that when it goes you
are late for an important appointment in an area with no cellphone coverage,
it might be dark if he is in a bad mood and raining...
Fun Fun
> You should do it at, or near, the recommended interval to avoid
> catastrophic engine failure. This belt is internal to the engine so there
[quoted text clipped - 7 lines]
>> the timing belt is slipping or going ? Surely I would feel this when
>> driving ? And then have it looked at !
tranch - 22 Mar 2005 21:04 GMT
> Unforunately I bot the car used and didn't get a manual ! And my concern
> is
[quoted text clipped - 3 lines]
> the timing belt is slipping or going ? Surely I would feel this when
> driving ? And then have it looked at !
Timing belt wear cannot be checked. They just need to be replaced at
certain intervals. Some belts will go 100K or more, some belts break at, or
near the recommended interval set by Nissan. To be safe get it replaced at
the recommended interval for your specific engine. No manual? Check Nissan's
web site of just call a dealer and ask when the belt should be replaced.
Don't replace the belt and you're playing "Russian Roulette" with your
engine. That belt breaks and you'll find out just how "little" a $700.00
repair was compared to the engine rebuild price you'll be paying.
Filipp Stepanov - 23 Mar 2005 03:13 GMT
Most manuals can be found at
http://www.courtesyparts.com/nissan-manual/index.html
> Unforunately I bot the car used and didn't get a manual ! And my concern
> is
[quoted text clipped - 3 lines]
> the timing belt is slipping or going ? Surely I would feel this when
> driving ? And then have it looked at !
Randall Phair - 23 Mar 2005 10:58 GMT
What year is your Sentra ? From 1991 on they had timing chains not belts.
> Most manuals can be found at
> http://www.courtesyparts.com/nissan-manual/index.html
[quoted text clipped - 6 lines]
>> the timing belt is slipping or going ? Surely I would feel this when
>> driving ? And then have it looked at !