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19th January 2020, 09:43 | #11 |
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Oil change & filter twice per year irrespective of mileage, spring and Autumn, average miles per year is most likely 6,500 PCV filter done also at the same time.
few photo's of what the chains look like on the M47. 1 Tensioner 2 3 4 5 6
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Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " Last edited by Arctic; 19th January 2020 at 09:49.. Reason: Photo Editing |
19th January 2020, 13:59 | #12 |
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I thought to replace the original chain drive on my 1956 motorcycle magneto. The new one wouldn't fit as good as the old one. They run in grease and I'd personally covered over 70k on the bike. Still running the old chain as it had almost imperceptible pin wear.
Note that many people check chain wear incorrectly and look at "bend". To check chain wear, thoroughly degrease/de-oil and check "stretch" on a smooth level surface. There will be a specified limit for the chain from "compressed" to "stretched" depending on the number of pins and size of the chan (1/4" etc.). JohnnyBG |
19th January 2020, 17:00 | #13 |
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Here you go guys, I took a pic of my 250,000 mile timing chain while the rocker cover was removed today.
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19th January 2020, 17:53 | #14 |
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I remember testing some micro filtration bypass oil filters on our commercials in the 1980's. Basically, you fitted a T piece at the oil pressure switch and some of the pressurised oil ran through the micro filter and back into the sump via a tube fitting. The oil never then seemed to get dirty (dipstick oil was as clean as when you put it in). We tried fitting one on an old Marina van (without changing the oil) and the old oil became almost clear after a one journey of around 200 miles! The micro filters were changed regularly but the oil could be left for longer intervals. The old oils were tested after huge mileages and were still well within spec. The only downside was one of the tubes leaked, so the system was scrapped (on the recommendation of a set in his ways transport manager)! I don't know if they are still available.
Here's one similar.
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Oil in my veins! Last edited by roverbarmy; 19th January 2020 at 17:56.. |
19th January 2020, 19:27 | #15 |
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I change oil & filter at the end of summer & the end of winter. ZAt a cost of £25 it is worth doing!
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19th January 2020, 19:30 | #16 |
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Hi Andy. Watch your speed. You beat me by a minute.
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19th January 2020, 19:40 | #17 |
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To my eyes, I know I wear glasses but if I take them off it’s like I have a magnifying glass, those chains what you can see, don’t look to bad. How many miles had they done Steve?
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19th January 2020, 22:46 | #18 | |
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Quote:
About 90,000 I think this is the engine that would not start after the crank pulley change so nowt wrong with the chains, as already stated in another thread taking it apart just to see what may have caused the problem, and keep any decent parts of it before it goes to scrap man.
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20th January 2020, 13:33 | #19 | |
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Quote:
Various engines have problems with timing chains Paul - I had a Triumph Stag back in the day and when I checked the tensioner it was one notch away from falling out altogether, so lucky I got to it just in time. More recently BMW had many failures of the timing chains with the earlier 1 Series diesels. Bit like head gaskets; on some cars they last the lifetime of the engine and on others they don't. Luckily for us owners, the M47R engines have timing chains that appear to last the lifetime of the engine. I stripped one down that had done 188k miles and there wasn't any appreciable wear on any component. They need regular servicing of course. Much as I usually change oil and filters earlier than recommended, with my car, as it was originally a company car and was serviced according to the manufacturer's schedule, I have carried on changing oil and filter every 15k miles. To date, nothing lubricated by the oil has ever been replaced and the engine runs fine and sounds fine too. The only clue to the high mileage is that the oil light takes a tad longer to go out from a cold start than it did when new. Not bad for an engine that has covered over 400k miles. |
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