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[bth2bth2]

hi all,
was just having a ponder vis a vis cam belt changes.

does anyone know the true reason for the move to a cam belt change every 40,000.......apart from the usual anecdodal?
i was always under the impression that the reason the belts failed was because the belt pulleys were originaly plastic.

just a thought.

brian

[TheBoy]

hi all,
was just having a ponder vis a vis cam belt changes.

does anyone know the true reason for the move to a cam belt change every 40,000.......apart from the usual anecdodal?
i was always under the impression that the reason the belts failed was because the belt pulleys were originaly plastic.

just a thought.

brian

Premature tensioner failures

[tunnie]

its the tensioner that failes, not the belt.

[less]

I assume that it is well known by now that the tensioners aren't up to the job, can nobody design and supply one that is? (or is this overly simplistic?)

[Albatross]

I had my belt done today and the bearings in the tensioners were amking a really scrapey noice when we took them off. The water pump internal seals were on their way out too.

45,000 since last change.

Phew

I assume that it is well known by now that the tensioners aren't up to the job, can nobody design and supply one that is? (or is this overly simplistic?)

Not really that simplistic; as always it comes down to costs:

You can make bearings that last a lot longer, they do them in really top end bicycle components for example. Most of the bearings on some of my bikes are ceramic, but trust me you would sooner throw your car away than pay for a tensioner & belt kit that has been precision made with ceramic bearings to the same tolerance as those are.

Why don't all cars come with stainless steel exhaust systems, limited slip diffs and ceramic brakes?

[cem_devecioglu]

With curiosity at 32000 Km s and 2 and a half years we checked the cambelt, belt was loose  

After a bit of work with tensioner,problem solved..Dot know who was responsible ,  time or the mechanic ??

[TheBoy]

With curiosity at 32000 Km s and 2 and a half years we checked the cambelt, belt was loose  

After a bit of work with tensioner,problem solved..Dot know who was responsible ,  time or the mechanic ??

More likely to be poorly fitted I would say.

[cem_devecioglu]

With curiosity at 32000 Km s and 2 and a half years we checked the cambelt, belt was loose  

After a bit of work with tensioner,problem solved..Dot know who was responsible ,  time or the mechanic ??

More likely to be poorly fitted I would say.

yep..my estimation was the same..didnt want to blame them so I keep silent.. :-/

[johnboy27]

just changed my belt & all idlers & tensioner last week.
was gonna wait til the due mileage but i bought another elite for spares that had bent valve due to a loose idler. the idler had only done 34k.
like others have said it could have been the mechanics fault or a dodgy idler.
either way i wasn't taking any chances & i carefully fittted a full gates kit & used locking compound on all the bolt threads.
peace of mind when your on a long run or towing.