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Oetker
YaBB God
Posts: 1097
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« Reply #22 on: September 01, 2014, 08:26:13 pm » |
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Yep.saw it before. Expencive gear. Edit, The gear is to soft. Especialy done to spare the camshaft in worst case scenario. Herman
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« Last Edit: September 01, 2014, 09:11:35 pm by Oetker »
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I feel like Jonah, only my fish looks different. Murena 2.2 Red 1982. Murena 1.6 black on places.
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roy4matra
YaBB God
Posts: 1203
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« Reply #29 on: September 05, 2014, 10:09:19 pm » |
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The damaged one from my picture came from a good running S. Also no Valve trouble. Thats why I think it's the gear itself that's not up to the task or as they told me made that way to protect the camshaft gear.
Herman
I would be surprised if it was mild steel, as it simply would not last and any swarf from the wear could get in to the engine. So I suspect that even if it is softer than the camshaft gear to protect that and be sacrificial itself, I would still say it must be slightly harder than normal mild steel, and I would still want to clean out the complete engine to make sure there are no bits left in that could cause problems later. Also if it were plain soft steel, then on the engine I worked on where the valve had been hitting the piston, I suspect the damage would have been different to what it was, but I can't say for certain. If nothing was causing this damage on other engines, then why do some engines have the problem and others do not? Quality of oil maybe? Another reason to use the best full synthetic, as far as I'm concerned. Roy
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