ATP is an authorized Honeywell/Garrett retailer(distributor?)
http://www.atpturbo.com/

Dave's got the ruler set up so you can compare the rod lengths
(Old and New [and the mods you have to make to the New] )

The ALDA is a fuel compensating device that reacts to Air Pressure...Either
Ambient or "Boost".Basically,When the Turbo raises pressure in the intake
manifold the ALDA "Sees" the rise and increases Fuel Flow Rate.'Cause
without MORE Fuel the "Boost","Doan DO Nuffin."

The intake is #5 in the first Cyrillic Pictogram,the test port will be any
threaded opening with a bolt closing it off.

#103 is the ALDA in the next two diagrams.

Attached Thumbnails

     

__________________
'84 300SD sold
124.128

Trying to get a final shopping list together for ATP.

gsxr - is the unit you purchased somewhere on the ATP site? http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=tp&Category_Code=WGT1
If not, will they recognize 433489-12 or did they have a different stock #?

and is this the fitting for the manifold port? http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=ATP-FTG-040&Category_Code=ATP-FTG2

and one last question, what diameter hose did you use for the connection?

Thanks for taking the time to write up such a great post on a much needed upgrade!

Klaus

__________________
‘84 300TD “Mountain Goat”
'62 300d Adenauer-350 Chevy - "Max"
'15 VW Passat TDI
'16 Dodge Ram 3500 - Cummins w/6-speed
'68 Mustang fastback
'55 T-bird
‘63 Studebaker Hawk

KK,

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=ATP-WGT-022&Category_Code=WGT1

This is Almost what you want...Although the Opening pressure (18PSI) is a
little Higher than Specs.(A Boost Controller might correct that) AND the
opening pressure MAY be slightly adjustable by Tweaking the Rod Length.
Ask ATP next time you call.

EDIT:
Corrected by both FI and GSXR (Thanks Guys!)
Opening Wastegate Pressure can Never be Adjusted Downwards!
(So, The 18 PSI model ain't the ticket)

Attached Thumbnails

 

__________________
'84 300SD sold
124.128

Boost pressure can only be increased with a boost controller and rod length.

The wastegate I purchased was not listed anywhere on the ATP website. You have to call or email, and ask for the specific part number I used.


That sure looks like it, yep!


D'oh! I don't remember. I believe I picked up some fuel hose at the local McParts store, both 1/8" and 3/32" ID, and I used the one that fit better. I need to double-check and add that info to one of the photos on my website.


Note that while you can make a wastegate open at a HIGHER pressure than rated (via boost controller), you cannot make it open at a LOWER pressure. So if you use a wastegate rate at 18psi, you'll never get it to open below 18psi. The wastegate I used keeps max boost at 14psi, right at factory spec, no boost controller required.

Some thoughts on what to check:

At what rpm to you achieve 13-14 psi? It should be all in by 2200-2500 rpm under load.

Run a boost gauge right off the ALDA atop the IP to ensure the ALDA is getting the same 13-14 psi.

Have you confirmed a good fuel supply? Clean filters, clear fuel tank vent/no vacuum build-up in fuel tank, etc.

What's the smoke situation when you floor it?

Sixto
87 300D

I will check to see when exactly the boost comes on. I think it is closer to 3k. There is absolutely no smoke out the back under full throttle that I can see in the daylight. Very different from my 1.6 TD vws, which have multiple adjustment and put out smoke commensurate to their power . All the filters are clean and new. I do have leaking IP DV seals, which are to be replaced tomorrow. Thanks for the suggestions.

__________________
Rich Mason
Chapel Hill, NC
1990 300D 285k miles
1993 VW Cabriolet converted to 1.6 TD
1985 VW Westfalia 1.6 TD

Rich,

That's what the factory calls it...consists of:
1. a pressure line from the Intake Manifold to the SwitchOver valve
(Mounted on the Faux FireWall just forward of the Brake Booster compartment) 2.A line from the SwitchOver Valve to the ALDA.
3.A Sensor screwed into the Intake Manifold that,When pressure in the Intake
exceeds the set Boost point,Grounds the SwitchOver Valve which then denys
Boost to the ALDA...AND as a result the ALDA "STRANGLES" fuel enrichment
to save the engine.

Problem is the pressure line from the Intake to the SwitchOver Valve,
and thence to the ALDA gets clogged up with all the EGR GOO and the ALDA seeing No Boost does not Enrich the Fuel Flow.

I'll bet if you:
1.Take the Pressure lines off and clean them out with Brake Parts Cleaner.
1a.Clean out the nipple the pressure line uses in the Intake.
2.Take the Switch Over Valve off and using Brake Parts Cleaner to blow out
all the GOO.
3.Unscrew the Sensor and Clean out it's port.

Your OM602's PERFORMANCE will amaze you!

Ideally you'd take the Whole Intake Manifold Off and fill it up with BioDiesel
to soak for a day or so and then clean it out.

BC's EGR deletion kit will remove the SOOT from the EGR part of the GOO!

__________________
'84 300SD sold
124.128

Ditto what Sixto said. Make sure the ALDA is getting a boost signal (the fitting can get plugged with oily goo from the EGR soot). A normal 0-60 time would be in the 12-13 second range, assuming the car is upshifting around 4800rpm at WOT. You'll never see smoke at WOT unless things are carboned up, or you have an airflow problem (dirty filter, etc). Even if you max out the injection pump, the engine flows more air than the pump can supply fuel for, so you won't see smoke unless something is wrong. BTW, I assume the fuel filters are clean, and/or recent?

__________________
Check out my website photos, documents, and movies!

Gsxr,

I just found this thread and have a couple of questions.

1.Do you have the part number for the European crossover pipe? I didn't see it listed in the thread but may have overlooked it.

2. How did you deal with the vacuum connection on the recirculating air valve mounted on the front of the turbocharger? Did you remove this or just plug the connection where it normally attaches to the hose coming from the transducer?

3. Will this modification work the same way on the 87 300D? I'm restoring one right now

I'm anxious to get this done one my 93 as well, I'm sick of the turbo lag and that rats nest!

I don't have a complete part list available. It seems that we may not be able to convert to the full Euro setup without the Euro turbocharger or exhaust manifold (or both). The Euro crossover pipe doesn't seem to line up any better than the US, it's still too far away. It's supposed to look like the photos shown here.



Depends what year/model you're talking about - the 602.962, which this thread is discussing, does not have ARV on the turbo at all. But in both cases, I removed all the stock plumbing, and changed the vac source fitting as shown here, so there is no vac feed to any smog equipment.



No need to. The '87 300D already has the pressure wastegate. Just disable the EGR and ARV, and block or remove the plumbing.



On the '93 it will allow disabling the EGR, and it also prevents the computer from cutting boost unnecessarily. It won't do anything for turbo lag. You can tweak the ALDA and/or full load to try and improve power, but once you're at the factory spec of about 12 seconds 0-60 (as measured via stopwatch), it's not gonna get any better without stuffing a 6-cylinder under the hood. The 2.5 engine is nice for economy, and it's fine once the RPM's are up, but off idle (and off boost) it's sluggish. Can't fix that - simple lack of displacement.

Dave, thanks again for locating this thread for me.

I'm showing 603-098-17-07 as the euro crossover pipe (603-098-15-07 for the US one) needed in conjunction with the 603-098-13-04 tube referenced back on page 2. Can anyone verify this? I can get a quote on my cost for one tomorrow.

Anyone have a good online supplier for the 433489-12 garrett actuator they can give a link for?

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

John, I managed to get the -17-07 euro pipe, and I already have the tube. I haven't yet figured how how the pipe is different from the stock pipe, but it is not different enough to replace the EGR mixer housing. I believe we'd also need the Euro exhaust manifold and/or Euro turbocharger to make things line up properly. They're almost identical visually... I wonder if the ID is a bit different perhaps. Something is still amiss here that I haven't yet pinpointed. In the meantime, the car works fine with the EGR and flapper valve simply disconnected.




Yes - I'm interested in finding an alternate source as well. But, ATP Turbo should be able to get one, although you'll likely need to call and talk with someone... it's not on their website, AFAIK.

I talked with a friend over at TurboXS and he said to email www.agpturbo.com about it and they should probably be able to get one, I'm waiting for a response still.

__________________


1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

No luck from AGP. Dave who did you order yours from? I'm just going to get it and worry about finding other sources later.

__________________


1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350