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4th May 2018, 08:07 | #71 |
Doesn't do things by halves
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That's very considerate of you Mike but honestly there's no need for any apologies. You didn't hijack the thread, nobody did, it just evolved. At least it explored a technically related issue in a mature fashion which is more than can be said for some of the malicious remarks made elsewhere.
Simon
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19th May 2018, 17:19 | #72 |
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And so we all get older!
Have we learned something along the way? Inquiring minds would like to know.
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21st May 2018, 11:46 | #73 | |
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Quote:
Now IF it is known that the wheels on the front of the inlet cams have never been disturbed since the engine was built, and that's a big if, then, in theory, just replacing the belts without slackening the wheels will maintain the setting when the engine was built. Personally, I'll continue o use the tools. |
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21st May 2018, 14:30 | #74 | |
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Of course we can trust the tools ; they set a logical "infallible" method for doing the job , with the only variable being the quality of the person using them . Please refer to my post #67 here
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21st May 2018, 15:05 | #75 |
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If the marks align in safe mode, the engine is timed. To deny this will be to say the engine constructor placed the timing marks wrongly. I think there will be too much checking before the casting is given the go ahead for this to have happened. Further, the timing on this particular engine was exactly there, the marks in the official instructions are also exactly there.
This then is, without any question, where you should end up when the job is done right. Leaving the sprockets on a factory engine will give you exactly that. The easiest way to achieve this, is to leave the sprocket well alone on a factory engine. Or, to make sure the marks align, on an engine that has been disturbed. That does not require any timing tools, just good eyesight. There can be very little confusion about that, I would have thought. But let's see where this ends.
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21st May 2018, 15:45 | #76 | |
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However, with an engine of unknown history, and if you have the tools, then I feel it is certainly worth checking the camshaft setting and correcting it if significantly out (mine was by over a tooth). |
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23rd May 2018, 09:08 | #77 |
Posted a thing or two
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I haven`t visited this forum for many months. Glad to see that the debate is still going on
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23rd May 2018, 15:08 | #78 |
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Slow learners?
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24th May 2018, 09:20 | #79 | |
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Revisiting the fundamental question
Quote:
“Unfortunately we were not able to hold the required cam timing tolerance without them [the ‘floating’ cam sprockets]. In fact the engine originally had them on the rear belts too, but we were just about able to get away with fixing their positions. However, this did push the timing tolerance to the limit which is why it is always a good idea to reset the timing using the setting tools if any of the components in the system are replaced. The Japanese were always better than us at controlling production tolerances!” Simon
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24th May 2018, 10:51 | #80 | |
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The worst offender would be the cam belt, and I have already shown you the expected maximum deviation of the belt and its effect, which is insignificant! Note the text from Diesel: only words and no calculations, no value at all plus an opt out, when pressed for specifics. Not convincing at all. But why don't you complete your job, and show us where you end? Then at least you can comment on an equal footing with people who have done the job.
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