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Chain Tensioner Kit for 1983 motor question
https://www.pelicanparts.com/More_Info/100445105.htm?pn=10-0445-105-M894&gclid=Cj0KCQiA-8PjBRCWARIsADc18TKNbRy2gKPUPiu3-APtVGNnv3pS0IkOUCJdYwQ3dMBijsDZyCqE-SoaAuOdEALw_wcB
Is this all I need to do my upgrade? I've read somewhere on here that there are some smaller bushings, or something else I need. Is there anything else I need for 1983 motor or will this kit do it all? Thank you! |
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Join Date: Sep 2007
Location: Boston, MA
Posts: 1,461
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You should be fine. In 1980 Porsche widened the bushings on the chain tensioner idler arms. If you had a 1979 or older, then you would need to either add spacers (that many kits come with) or upgrade to the wider idler arms.
Your 1983 should already have the wider idlers. Mark
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1979 911SC Targa |
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Quote:
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Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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The idler arms should have the later wide bearing, but your MY ('81 on) should already have these in place. Confirm when you have the cover off.
Sherwood |
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I would also check the chain, chain ramps and sprockets; and replace as required when you open the cam chain covers.
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Join Date: Oct 2003
Location: Northside, Brooklyn
Posts: 2,357
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I have an '83 and never did the upgrade... The mechanics I spoke to seemed to think it unnecessary. I was totally ready to do it and started to order stuff like the gaskets and chain-ramps.. Chain ramps btw are plastic (!) and there are a few different ones which go in there. The plastic makes me wonder how long plastic can stay, in tact, in there and what happens when the plastic inevitable fails, as plastic is want to do. I also bought the anti-collapse collars for the chain tensioners (safety collars) and didn't like the looks of them. I like their idea and intention BUT if one of those exploded the tiny screws etc, would end up killing the engine. So, they too, sit on the shelf 40,000 miles later, cracked plastic ramps would do less damage, even a collapsed tensioner might also be caught in time. These are things to think about.
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jt '83 SC '96 M3 6 Bicycles 2 Sailboats |
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Join Date: Jul 2008
Location: Humboldt, Co.,CA
Posts: 97
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Mechanical tensioners
I did the hydraulic upgrade in my 82 SC . It has leaked in the past where the tubes enter the tensioner plates. My mechanic friend makes new ones that are mechanical and will not leak. They will be incorporated in the engine rebuild we are doing.
If you are interested here is his contact: Craig Lemster Speciality Foreign Auto Expert Foreign Auto Restoration enjoy driving, Bill |
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Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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Manually adjusted tensioners have been around for a long time. When adjusted properly, they’re fine. Question is, how often will you perform periodic inspections and needed adjustment, e.g. before every track weekend, every 2000/5000/10,000 miles?
Sherwood |
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