All 60x engines have the intake that loops over the top of the IP. I think only
the 603 loops over the top of the engine.
-Curt
From: Dan Penoff via Mercedes <mercedes@okiebenz.com>
To: Okie Benz <mercedes@okiebenz.com>
Cc: Dan Penoff <d...@penoff.com>
Sent: Thursday, September 3, 2015 2:48 PM
Subject: Re: [MBZ] Alda shim WUZ: 300SDL?
Gotcha.
So this is the engine with the intake that loops over the top of the engine and
makes stuff hard to get to?
My diesel experience ended wit the M617.
I often recall tweaking the ALDA on these engines. Such a nice bump
performance-wise. The 85 300CD I had would chirp the tires in second gear
after I tuned up the ALDA.
Dan
> On Sep 3, 2015, at 2:23 PM, Curly McLain via Mercedes <mercedes@okiebenz.com>
> wrote:
>
> No, there is still the screw, but you have to take off the inhalt manifold to
> get there. Simpler to take the alda loose, drop in a shim and put the alda
> back on. Test drive.
>
> On a OM617, where
>
> The mechanism gets worn to beyond what the screw can adjust. We are talking
> 30 year old cars now. The screw is still the official best way to do it, and
> if you don't mind spending a few thou for a new IP on a sub-$1000 heap, the
> screw is the preferred way to do it. But when you don't have an intake
> manifold gasket and parts take a week to get delivered or when the car is
> high mile and the screw may well be at the end of adjustment, a shim works.
> It might give you back some adjustment
>
> In the case of my 300D, if i'd wanted to take off the manifold, have the car
> down a week waiting for parts, and adjust the screw, I may have been able to
> fine tune the fuel delivery with the screw, or put in the shim and then gain
> adjustment range with the screw.
>
> In the case of the heap, I doubt the screw was ever adjusted in 29 years,
> because the seal cap was still on top of the ALda. I could see it, but you
> can't adjust the screw with the manifold on anyway, so i left it alone.
>
> BTW, I change the Glow plugs with the manifold on too. Faster and cheaper
> that way.
>
> A big positive for these methods is that you DON"T have to break open the
> injector lines, and risk introducing fine particles into the injection system
> to damage or ruin the nozzles.
>
> Personally, I have never adjusted the screw. They either run or are sluggish.
> Most of the time the sluggisnness is cured by blowing out the vacuum line to
> the manifold. In this case, that made no difference, and never a puff of
> soot when the turbo kicks in. it felt like the turbo never kicks in. So,
> time for a shim. Since I rarely drive the heap out of town, the shim was a
> low priority.
>
> The heap is more fun to drive now. Last week I beat out a fairly hot car at
> a stoplight. That's never happened before. It could not beat a 240D 4 speed
> before.
>
>
>> So in order to adjust the ALDA on the 603, you have to shim it as opposed to
>> adjusting a screw like on the 617?
>>
>> Dan
>>
>>> On Sep 3, 2015, at 12:23 PM, Curly McLain via Mercedes
>>> <mercedes@okiebenz.com> wrote:
>>>
>>> There were posts, and I think a McMaster part number for that some years
>>> ago. Not having a mcmaster any where near, and not wanting to pay $10
>>> shipping for a 50¢ part, I take the copper washer for the OM603 (124) oil
>>> filter center bolt, as they are not used in the SDL, then put that copper
>>> washer over a needlenose pliers, and pull the pliers apart, stretching the
>>> washer oval. Turn 90º and repeat. repeat until the washer is big enough
>>> to fit over the alda guts, but still small enough to fit inside the threads.
>>>
>>> A ring sizer or other tapered round is good for changing it back in to a
>>> circle from the oval. I don't have a ring sizer, so I just do the best I
>>> can with the needlenose pliers. It is not an exact science.
>>>
>>> This results in a copper washer about 1/16" thick and maybe 2 mm wide in
>>> cross section.
>>>
>>> There ore other ways to do it, but since I always have oil filters, one of
>>> these washers is always handy. I throw the copper washers/rings etc I
>>> don't use into a can near the oil filter stash
>>>
>>> I tried on in the 300D one tme, but it was overkill, so I took it out and
>>> jest left it the way it was. That car had only about 200K miles at the
>>> time, so not too badly worn. The winter heap SDL has about 500k miles.
>>>
>>> If you had a steel ring sizer and a brass hammer, you can stretch the
>>> washer with those tools by tap and turn the same as a jeweler enlarges a
>>> ring.
>>>
>>>
>>>> Curly, is there a standard thickness for the proper shim, or do you use
>>>> the Booth method?
>>>> --
>>>> Max Dillon
>>>> Charleston SC
>>>> '87 300TD
>>>> '95 E300
>>>>
>>>>> On September 3, 2015 10:31:46 AM EDT, Curly McLain via Mercedes
>>>>> <mercedes@okiebenz.com> wrote:
>>>>>
>>>>> I just shimmed the alda in my winter heap (finally) and it is much
>> >>> better. It accelerates with some spirit, but still not what I'd
>>>>> call properly tuned. Still no puffs of soot when you get on it, but
>>>>> it was sedate to the point of being near a 240D auto.
>>>>
>>>>
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>>>
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>>
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>
>
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