911SC Chain Tensioners

Max2.0 · 06-28-2007, 02:47 PM

So I blew the moths out of my wallet, and spent the big bucks to have my 83 SC upgraded to Carrera Oil Fed Tensioners...

And my PM says " Gee, the originals are like brand new, and even have the Safety Collars on them, and I am not even going to change your Chain Ramps, cause they also look like brand new!"

So, for all that green stuff, I get to see a couple of little silver oil lines running around behind my cam covers... Whoop de do!!!

Which begs the question... Ours sponsors want over $600 for new SC Chain Tensioners and Safety Collars and Chain Ramps... Mine are great...and I will toss in the original Cam Cover plates, tho not sure why your would need them...

Make me an offer??? P/N 930.105 501.0R for the Tensioners... no P/N on the Safety Collars... No, I can't begin to compress the Tensioners with anything but a bench vise, and that would be difficult...

Superman · 06-28-2007, 03:26 PM

I've got my old stock tensioners. I'd guess there is not much market for them. Don't start feeling like this was a mistake. The Carrera tensioners are an important upgrade. There are few things that can damage our engines. They are robust indeed, but a failed tensioner can do much more damage to your wallet than those Carrera tensioners did.

rwolak@verizon. · 06-28-2007, 03:35 PM

Just goes to show you that some upgrades are a lot of hype. Just had a discussion with a 35 year Porsche mechanic who flatly sad: collars will protect the engine the same as upgraded tensioners. Even Carrera tensioners fail---just have to protect against the failure!!!!

Superman · 06-28-2007, 04:04 PM

I've heard of stock SC tensioners failing. I've heard of Carrera tensioners not working when installed. But I've never heard of a Carrera tensioner failing. Heck, if all you want is to prevent the tensioner from ruining the engine, then all you'd need to do is install the fixed tensioners. The racing ones.

I guess that's what you must have installed eh, rwolak?

rwolak@verizon. · 06-28-2007, 04:34 PM

Getting a little touchy, Superman!!!!

All I'm saying is that there is "more than one way to skin a cat"!!!! I've seen a number of discussions on this forum concerning collars vs Carrera tensioners. The Carrera tensioners are, indeed, good. The fact that you have "never heard of one failing" doesn't mean they don't fail. Anything mechanical can fail!!! It all boils down to what price to you want to pay for "piece of mind"!!!

yelcab1 · 06-28-2007, 05:00 PM

I upgraded, and I am not sorry. But, I did not feel totally satisfied. It's OK.

I tossed my old tensioners. Very little market for them.

Max2.0 · 06-28-2007, 05:43 PM

Hmmmm..."very little market for them", and yet Pelican sells them for $600.00 a pair...

I was born at night, but it wasn't last night!

Guess I will just eBay them...

Gene Wilkes · 06-28-2007, 05:57 PM

I would like the cam cover plates! Be glad to pay shipping!

yelcab1 · 06-28-2007, 06:14 PM

Quote:

Originally posted by Max2.0
Hmmmm..."very little market for them", and yet Pelican sells them for $600.00 a pair...

I was born at night, but it wasn't last night!

Guess I will just eBay them...

How do you convinced people that the used chain tensioners you just took out of your 25 years old car after you have replaced them with new tensioners can still be worth $600, or there about. But, I know you can sell anything on ebay. Even if it is some thing super critical to the engine that when it failed, your Porsche engine is going to cost $5000 for a valve job, or more.

I could not do it, I even listed on ebay, and no takers, so they were tossed. I gave the old covers away to someone here.

Max2.0 · 06-29-2007, 05:47 AM

I never said i wanted $600 for them, just that is what our Sponsor sold them for, and these are "As New", per my mechanic, and have the Tensioner Locks installed as well, so they will never completely fail...

You may be correct in that there will be no eBay buyers...

Time will tell... apparently the Cam Cover Plates are worth more than the Tensioners???

tcar · 10:30 AM

Carrera tensioners are not magic. They fail too. Less often than some others, but they do fail.

Safety collar is a good idea.

I've seen people NOT buy a nice SC because it didn't have carrera tensioners. Pretty silly. If you absolutely have to have them, they're not that expensive (relative to Porsche maintenance costs).

fumanchu · 06-29-2007, 10:40 AM

My 140k mile engine has the stock tensioners. I will not be upgrading, just rebuilding. I will buy your safety collars though if you dont want to ebay them.

Shawn

Superman · 06-29-2007, 10:45 AM

I was just trying to help Max2.0 with his buyer remorse thing, and you were working to increase his remorse. It was as if you chose to chime in with a "Boy, you sure got hosed" comment. And it's "peace" of mind.

Lots of guys have tried to out-think the German engineers who designed 911 components and systems over the years. Virtually none have succeeded. A decision was made to develop and utilize pressure-fed tensioners. There were reasons for that.