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Registered
Join Date: Jan 2001
Posts: 696
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Wrench says mech. tensioners better than hydraulic?
Wrench during valve job wants trash the tensioners on my '87, says the mechanical type are more reliable. Is that true?
Second, says the cylinders (Mahle) can be honed and fitted with new rings? I'm ok with the idea of new rings but won't honing damage or wear through the cylinder plating? |
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Team California
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If your mechanic is in fact a Porsche specialist, I would say that #1) He is in the extreme minority w/ tensioner opinion, (oil-fed tens are spring+hydraulic, quiet, dependable, etc., and #2) is dead wrong about "honing" nikasil or alusil jugs. You will hone the plating right off of them. If you doubt this, do a search and you will get opinion of Roland Kunz, John Walker, etc.
Where did this fellow get his training? Might want to get a second mechanic's opinion. Good luck.
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Denis I'll bet that Bolton is wishing that he was a gay MAGA clown pathological liar right about now. ![]() |
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Author of "101 Projects"
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Agreed, this fellow sounds a bit like a hack...
-Wayne
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Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
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Registered
Join Date: Jun 2001
Location: Sweden
Posts: 5,911
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Huh? He's wrong...
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Thank you for your time, |
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Navin Johnson
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,811
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and your wrench knows more than porsche?
they changed to pressure fed tensioners for a reason you need a new wrench.............
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Don't feed the trolls. Don't quote the trolls ![]() http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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Registered
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Actually Porsche went from pressure feed tensioners, on early development motors, to non-pressure feed ones in their normal production cars. Then they went back to pressure feed tensioners.
I wouldn't go to mechanical chain tensioners. I know that I have a set in a 2.2E motor, however I will be changing them to the late model pressure feed ones as soon as I can. When I used mechanical ones, I did so knowing that I would be into the motor at least every other month. (I used them in an autox car) Good luck, David Duffield |
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Registered
Join Date: Aug 2001
Location: New York, NY, USA
Posts: 128
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To change from pressure to mech on a car that has pressure is pretty odd unless you have a full-on race car that gets regular PM. The pressure fed can fail and ruin your engine (happened to a buddy of mine who does a lot of track events- make sure you have the anti-vibration clamp updates!) while a mech can not if done right. However, this is appropriate for only a very narrow application range.
The bit about honing cyls on an '87, which I bet you are in perfect shape, clinches it. Change mechanics. |
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