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  #1  
Old 01-24-2014, 01:06 PM
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On the 617.952 Engines I think the enough of the Crank Dampener has to come off in order to pull out the Long Timing Chain Guide Rail Pin. If so that is extra Work.
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  #2  
Old 01-24-2014, 01:30 PM
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Quote:
Originally Posted by Diesel911 View Post
On the 617.952 Engines I think the enough of the Crank Dampener has to come off in order to pull out the Long Timing Chain Guide Rail Pin. If so that is extra Work.
Correct, if the tension rail is to be replaced. Cam sprocket comes off too. Replacing the lower slide rails also requires removal of the balancer. Both are easier to do with the water pump housing out. The job snowballs quickly when it expands beyond just replacing the chain and tensioner.
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  #3  
Old 01-26-2014, 12:15 AM
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1979 617 NA. Cam chain, banana rail, upper guide rail, cam chain tensioner, no lower rails (2), 3 belts, water pump bypass hose; $1050 in December, Indy, California central coast.

'77 300D, 499K mi.
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  #4  
Old 01-24-2014, 01:10 PM
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I had it done for $950 about 2 years ago from an Indy, including all parts.
I had read about the process a lot here, but decided to have him do it, per his expertise, better tools, and hearing about some mishaps when non experience folks have done it.
Unfortunately, he retired and moved.
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  #5  
Old 01-24-2014, 02:10 PM
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If you haven't bought your parts yet!

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Originally Posted by SHARK1007 View Post
What is the approximate going cost for a timing chain professional replacement? Friend of mine is doing it as a favor and I do him favors. I'd just like to know cost so I make sure we keep things even.

He's the most competent 617 guy I've ever met, ran a machine shop for decades, etc. so he will be doing it right. He's also going to zip the timing up a touch and check all injectors. It's the "snail" that my deceased little brother drove, so I have to keep it forever.

Here's a new chain and tensioner I've offered for sale.

http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/349903-wts-617-timing-chain-tensioner.html
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Old 01-24-2014, 09:17 PM
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This is a good DIY on changing the Chain and all the related parts that CELL did a couple years ago.

9 degrees of chain stretch


Charlie
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Anyone that thinks a 240D is slow drives too fast.

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  #7  
Old 01-24-2014, 09:22 PM
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thanks everyone for the comments my Indy has done a lot of work on the car but is having some personal issues and is a little bit off focus these days and my friend is jumping in he already bought parts.

my friend is going to do the perfect job on the car I got great faith in him I love my new GLK 250 but the snail is still my favorite

thanks again
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  #8  
Old 01-25-2014, 09:34 PM
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Quote:
Originally Posted by SHARK1007 View Post
thanks everyone for the comments my Indy has done a lot of work on the car but is having some personal issues and is a little bit off focus these days and my friend is jumping in he already bought parts.

my friend is going to do the perfect job on the car I got great faith in him I love my new GLK 250 but the snail is still my favorite

thanks again
I hope your friend bought a IWIS (JIWIS) Timing Chain and Master Link as the Beck Arnley made in Japan one is not up to the Job.
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Old 01-26-2014, 01:57 AM
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The approximate cost depends on the hourly charge, and how much you want to replace.

Primarily the banana rail and chain were replaced on mine, but while I was at it I went ahead and had the tensioner, tensioner spring (separate on my 617 turbo), and corresponding gaskets replaced. This meant removal of the water pump, water pump housing, thermostat housing, and crank pulley to access the lower pin.

You'll also need the tool to crimp the chain links (master link to ends of new chain) as well as the holding tool (if necessary) to hold down the chain to the sprocket so it won't fall off.

Here's a photo documentary of what you could expect

W123 timing chain replacement - photo references
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  #10  
Old 01-26-2014, 10:11 AM
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Thanks for all. This guy is the best I have ever seen. Super anal and all,he has machine shop and has rebuilt probably 1000 617s as well as lambos ferrarris, bmw etc. We share a Hatteras sportfisher that I own and he finished the job, rebuilt the 6bta Cummins etc.

I'm just anal too and keep a mental balance sheet in my head so we are always about even.

Thank you all again
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