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Topic: 24V Timing Chain Tensioning (Read 1375 times) |
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5stud
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I'm a YaBB newbie!
Posts: 436
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Re: 24V Timing Chain Tensioning
« Reply #20 on: May 18th, 2010, 10:33am » |
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can you revert to boa duplex set up ?.why did ford change.maybe cost.ive never heard of a boa duplex letting go but prove me wrong.same ase the fiesta-escort 1600diesel.changed to belts on the 1800.spent the next ten years trying to sort the problems out and failed then went back to the 1600 way
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faffi
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Two-wheeled cornering
Posts: 109
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Re: 24V Timing Chain Tensioning
« Reply #21 on: May 18th, 2010, 10:46am » |
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So I take it the engine use a simplex chain, then?
As to duplex chains failing - it did on me mate's Mercedes 230. Or rather, it was saved at the brink of disaster, but he needed a new chain, spanner, slider and camshafts IIRC (I believe the sprockets are carved into the camshafts and not seprately replaceable - and they were completely worn out).
Looking at motorcycles, which almost always use a single chain design, single chains seems to be sufficient. And these rev up to 20,000 rpm for small engines and over 14,000 for some of the litre bikes with really radical valve lifts and hence stiff valve springs (which is what cause the majority of the strain).
Belts are a PITA. I just replaced the belts on my son's Ducati Monster. Having to do this every 12,000 miles or 2 years (whatever comes first) seems silly when single row chains often last as long as the rest of the engine.
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a900one
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A scorpio is for life not just for christmas
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Re: 24V Timing Chain Tensioning
« Reply #22 on: May 19th, 2010, 6:37pm » |
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I think Martin has a point, with the tic over, I rev mine to 2000 when is starts and then keep the revs below 2500 untill hot. I now rev to 2000 when I turn it off, it may keep tension in the chains. Mine has the updated tensioner and it still rattles a small bit, 10-60 oil has cut the time on startup by alot.
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