Peter -
There is a drilling jig that one must use to keep the holes in the proper
alignment when machining for the inserts on these engines. What makes the
job more difficult is the alloy with the silicon. It makes for a good
wearing surface but it is really tough on drills and taps as well. Timese
"Mercedes Discussion List"
Sent: Wednesday, September 2, 2009 10:57:37 AM GMT -05:00 US/Canada Eastern
Subject: Re: [MBZ] 380SL chain tensioner
The bolts go into the block at an angle. If you don't get them exactly right,
the bolts won't torque correctly and the head gasket
net
>Sent: Sep 2, 2009 10:36 AM
>To: Mercedes Discussion List
>Subject: Re: [MBZ] 380SL chain tensioner
>
>
>
>Worse yet, on the earlier aluminum block engines, the head bolts seize in the
>block, requiring a special jig to install steel inserts in order to re-install
Worse yet, on the earlier aluminum block engines, the head bolts seize in the
block, requiring a special jig to install steel inserts in order to re-install
the heads. This is VERY expensive.
Why not Helicoil them?
Pete
Windsor
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An HTML attach
Peter Frederick wrote:
They do not, which is why you get chain slap on startup.
Sounds like a startup oiling system would be useful for that engine.
Either a pressure tank on a solenoid valve, or an electric oil pump, get some
pressure in the oil galley before the engine starts turning.
Mit
Message-
>From: Hendrik & Fay
>Sent: Sep 2, 2009 8:45 AM
>To: Mercedes Discussion List
>Subject: Re: [MBZ] 380SL chain tensioner
>
>So how do they maintain pressure, when there is no oil pressure?
>
>Hendrik
>
>Mathieu J. Cama wrote:
>>
>>
>>
So how do they maintain pressure, when there is no oil pressure?
Hendrik
Mathieu J. Cama wrote:
---Original Message---
From: Hendrik & Fay
Subject: Re: [MBZ] 380SL chain tensioner
Sent: 02 Sep '09 12:24
If the tensioner is the same as the inline 4 and 6 petrol mot
I just hired a dude whose last name is Mathieustrange...
Bob R
On Tue, Sep 1, 2009 at 7:59 PM, Mathieu J. Cama wrote:
>
>
>
> > ---Original Message---
> > From: Hendrik & Fay
> > Subject: Re: [MBZ] 380SL chain tensioner
> > Sent: 02 Sep &
> ---Original Message---
> From: Hendrik & Fay
> Subject: Re: [MBZ] 380SL chain tensioner
> Sent: 02 Sep '09 12:24
>
> If the tensioner is the same as the inline 4 and 6 petrol motors, then
> there is a spring and ratchet mechanism in there which w
If the tensioner is the same as the inline 4 and 6 petrol motors, then
there is a spring and ratchet mechanism in there which would not be
affected by oil pressure.
Timing chain rattle is a different sound to the ticking produced by
lifters and such. Old oil will make the ticking louder and long
From memory those small V8's had some problems with camshaft wear,
which resulted in a ticking noise.
Do these have solid or hydraulic lifters? Hydraulic lifters have been
known to tick until the oil pressure builds up in them.
I don't know that you can measure timing chain stretch in the petrol
On Tue, 1 Sep 2009 18:30:34 -0400 Mathieu J. Cama
wrote:
> On Sep 1, 2009, at 5:52 PM, Kaleb C. Striplin wrote:
>
> > Now if it was this easy on a 119 motor, I would be all set.
>
> 4 cams... double the pleasure. Timing advance units... even more fun.
> Baum sells some really nice tools that s
On Sep 1, 2009, at 5:52 PM, Kaleb C. Striplin wrote:
Now if it was this easy on a 119 motor, I would be all set.
4 cams... double the pleasure. Timing advance units... even more fun.
Baum sells some really nice tools that should make your life
considerably easier on that job.
Mathieu
___
edes Discussion List"
Subject: Re: [MBZ] 380SL chain tensioner
Thanks! I was hoping for something easy!
At 07:43 AM 9/1/2009, you wrote:
Should not take more than about 10 minutes to change, just take 2
bolts off, pull it out, put new one in, install bolts.
Loren Faeth wrote:
How long/di
Now if it was this easy on a 119 motor, I would be all set.
Mathieu J. Cama wrote:
On Sep 1, 2009, at 12:29 AM, Peter Frederick wrote:
Roll in a new chain and replace the upper right tensioner rail NOW
before the rail gets broken by the chain slap and the chunk falls
down and snaps the chain,
l.net
--
From: "Loren Faeth"
Sent: Tuesday, September 01, 2009 9:10 AM
To: "Mercedes Discussion List"
Subject: Re: [MBZ] 380SL chain tensioner
Thanks! I was hoping for something easy!
At 07:43 AM 9/1/2009, you wrote:
Should no
On Sep 1, 2009, at 12:29 AM, Peter Frederick wrote:
Roll in a new chain and replace the upper right tensioner rail NOW
before the rail gets broken by the chain slap and the chunk falls down
and snaps the chain, unless you WANT to do a valve job.
Check stretch every 30,000 miles and replace at
Thanks! I was hoping for something easy!
At 07:43 AM 9/1/2009, you wrote:
Should not take more than about 10 minutes to change, just take 2
bolts off, pull it out, put new one in, install bolts.
Loren Faeth wrote:
How long/difficult of a job is it to change the tensioner on the
3.8 gasser?
Should not take more than about 10 minutes to change, just take 2 bolts
off, pull it out, put new one in, install bolts.
Loren Faeth wrote:
How long/difficult of a job is it to change the tensioner on the 3.8
gasser? How much stuff has to be taken off to get to the tensioner?
Anyone able to
Roll in a new chain and replace the upper right tensioner rail NOW
before the rail gets broken by the chain slap and the chunk falls
down and snaps the chain, unless you WANT to do a valve job.
Check stretch every 30,000 miles and replace at 4 degrees.
Peter
Loren,
you are flirting with a total KABOM.My 86 560Sl had 145K on it with no
chain slap, just a leaking valve cover gasket. Pulled the cover and
found the nylon chain guides broken into 4 pieces. Oilers, tensioner.
chain guides new chain and gasket was 1200 bucks at my Indie. Best
money I ever spe
How long/difficult of a job is it to change the tensioner on the 3.8
Never done it, but I suspect it's not hard to get to.
-- Jim
___
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How long/difficult of a job is it to change the tensioner on the 3.8
gasser? How much stuff has to be taken off to get to the
tensioner? Anyone able to get me the pdf for that job? (1985 380SL)
Daughter's Sl makes quite a clatter at startup at the front of the
right bank. It only lasts a s
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