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28th July 2021, 09:59 | #21 |
This is my second home
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Winners never quit and quitters never win!
So what does that make a chap who stops while the going is good.? Likewise preventative fix is better than fix on fail, vs don't fix if it aint broken! The choice is up to the owner, but the results of a wrong decision can be a total loss of the car. If the car is important to you, always follow the rules in cases where the consequences can be fatal. You don't want a display of bent valves, or worse!, in these engines, if you can help it!
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28th July 2021, 10:15 | #22 | |
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Dave |
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28th July 2021, 10:29 | #23 | |
This is my second home
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What you have is and always has been anecdotal evidence with no scientific fact, research nor experience (qualified) to back your claims. Are you willing to repair someone's engine with a broken belt, if the owner states, I was told by sd1too on the 75zt owners club that it I did not need to do the belt change? Sent from my SM-A600FN using Tapatalk
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28th July 2021, 10:40 | #24 |
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As had been said before.
The position of this club is that belts etc. should be changed in accordance with the manufacturers advice. If someone chooses not to do so then that is the individuals choice, but the advice by the club is that you should follow the manufacturers advice |
28th July 2021, 10:42 | #25 |
This is my second home
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My missus could probably do with a toy boy. I can't see why, because I have all the same equipment which appears to be perfect to my eyes. I could run for years yet (well, walk at a brisk pace!). I don't think that I am about to peg out just yet but I did lose a good mate just last week who was about the same age. You pay your money (or not) and take your choice. Can we put this to bed now? (Assuming that a toy boy is not required!)
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28th July 2021, 10:51 | #26 | |
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Exactly right as a club we should advise owners to go with the specified change point as if it breaks it wont be long before someone says " It said on the owners club it would be ok " Dave |
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28th July 2021, 10:53 | #27 | |
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Quote:
I totally agree, manufacturers don't give out change intervals or specs to make more money on servicing, they do it to make sure they don't get bad press from failures. The specs are arrived at from their own R&D dept's and consultations with the belt, pulley and tensioner manufacturers after going through the many variables that affect belt life, from material, belt speeds, belt path, expected temperatures, tensions, affects of atmospheric pollutants,contamination by various engine fluids and so on. From these they arrive at the recommended interval which has quite a reasonable safety margin. In the main they get this right, but occasionally as in the past when belts fail before they should do for various reasons, they reduce the change interval. You could get two cars off the production line with engines, belts etc all from the same production run, one may have its belt fail not long after the change time, the other go for many thousand more miles and still be operating. If two identical engines were bench run side by side in identical conditions for 100,000 miles, one programmed for low to average stop start cycles, lots of motorway use, the other very high stop start cycles, such as a city center taxi, the latter would show more degradation. Why is that ? simple, it is due to the fact that maximum stress is placed on a belt is at start up, when it has to overcome the inertia of the stationary camshafts and other ancillaries it drives, think of having to give a wheelbarrow that first nudge to get going after which less energy is needed to proceed, it is the same reason that most cam-belt breakage's or tooth loss occur when starting rather than when under way. When all said and done, it's not a fortune in time or money to change on time. Conversely, I expect the same folk who don't change belts on time change oil and filters meticulously on time, even though if lab sampled they would be still OK for easily another 10,000 miles. Number 2 son with the garage does very well from customers who think they save pennies by prolonging service times and his black museum cabinet of mangled engine and transmission parts is proof of the potential costs, on the other hand at number 1 sons company where the lubricant changes are only done after lab tests it is surprising at how changes can be extended to far beyond the normal time on many engines, yet other identical engines with the same running patterns need more frequent changes. Lesson being is that if you have the means to test belts, lubricants etc to determine if they need changing do so, if not stick to the manufacturers recommended times to prevent unexpected and costly surprises.
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29th July 2021, 07:53 | #28 | |
Doesn't do things by halves
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Simon
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29th July 2021, 12:00 | #29 | |
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For your record, I believe every one of these anecdotal instances, including yours! I have said it before, I am one of those who have ignored the schedules concluded from proper research and development, eg. one 14 year old car, 235,000 miles, 195k in my family's ownership, and still on the original belt - it had a 60k/4year change schedule! This and others is not considered factual, it is anecdotal evidence! It is not proof, not is it research!
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It is not gloss primer .............. it is duct tape silver! Last edited by clf; 29th July 2021 at 12:06.. |
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29th July 2021, 13:53 | #30 |
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This thread seems to have got pointless now the OP did his own belts and well done to him as they needed doing, As the majority of us know the belt change interval and go by it knowing it makes good sense and gives piece of mind for another 6 years of motoring without keeping thinking of belt failure
The belt change point is 6 years or 90000 miles as stated my MGR as I'm sure all now are aware |
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