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Registered User
Join Date: Jun 2008
Posts: 48
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993 chain tensioner replacement?
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Owner, Callas Rennsport
Join Date: Mar 2006
Location: Los Angeles, CA
Posts: 187
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Randy, I am trying to understand your post. Did you say the chain tensioner was previously installed improperly such as upside down or on the wrong side of the engine? Are you using Mobil-1 or a similar 15w-50 Synthetic engine oil? Is the ticking noise on a valve cover or the chain housing cover? Is is really a ticking or a very light knock?
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Owner, Callas Rennsport Phone: 310-370-7038 Located in the Greater Los Angeles Area http://www.callasrennsport.com |
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Registered User
Join Date: Jun 2008
Posts: 48
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Quote:
I'm using Mobil1. It's more of ticking than knock on the chain housing cover, disappears at idle and comes on as I slowly rev up. Noise seems louder now than before. What is the average lifespan of these chain tensioners for 993? |
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Registered User
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The chain tensioners are a non issue with the 993. Why were they off in the first place?
There should some tick noise due to the lifters. If the engine was apart for some time, the lifters might need some time to pump up & make noise till they do. If the noise if to much for to long, my money would be on the lifters. Of course if something was apart & assembled wrong, that could be it as well. I don't understand how something was installed backwards up there. |
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Registered User
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It is very easy to install the tensioner backward. They looked almost the same except for the oil feed hole. When installed backward, the tesnsioner doesn't get any oil pressure to tension up the chain ramp beyond the spring. The impact of this? I don't know.
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Now in 993 land ...
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What frequency is the ticking in relationship to the rpm of the crank?
George |
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