Thanks. I figured that out after I posted, clicked on your links, duh. The VR6 and Audi 200 pumps are basically the same with different plugs, so I guess it'll work.

Do you know what you're putting out for peak HP? I haven't followed your project (sorry), what's your max boost set to?

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Gone to the dark side

- Jeff

How about an integrated intercooler? Cummins has done it on many of their engines using the engine's cooling system.

Something in place of the stock intake with the head ports welded as part of the cooler would be very compact and space efficient.

4BTA, 6BTA (Non-Dodge) and their larger Big Cam engines.

One of the things about big-truck parts vs car and light truck, is the big-truck stuff is designed to take full rated hp (or close) continuously. The air-to-air aftercooler on a 300hp CAT I had was HUGE, big enough to dissipate the heat for a long mountain grade at full throttle (which I did regularly), wouldn't even come close to fitting the front of a pickup truck. The one on my 500hp Detroit was rediculous.

If it's truck rated, it's probably overkill.

__________________

Gone to the dark side

- Jeff

I still have not added any fuel yet, so power is still stock. Also my VNT still needs some twaking (mostly a new, lower pressure actuator) so I will hit 25 psi sometimes. I am shooting for a max of 13 psi or so.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

They're road racing... totally different scenario. If you were daily driving/autocrossing/etc you wouldn't have that problem with an A/W.

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John Robbins
'05 E320 CDI - 240k
'87 300TD - 318k

Since you're running more boost, and cooled charge, in theory you wouldn't get more power unless there's more fuel, so does the ALDA respond to the higher boost with any more fuel or was it pretty much finished at stock boost?

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Gone to the dark side

- Jeff

Yes, just trivia, it happens when you get old, the stuff just rolls out (like flatulence) whether you intend it to or not.

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Gone to the dark side

- Jeff

The ALDA has returned all it has taken by 12psi.

I guess I do have a bit more power now as my T3 was only putting out 8 psi or so.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

yes, it was used on the 855s, small & big cam versions

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H.D.B.
OBK #45
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'75 W115 240D, wife's dd, 197K
........'75 W115 300D, my dd, 245K
.. .. ..........'82 W126 300SD, the 'someday' project

An unmolested ALDA that is. If you have adjusted it in the past then it may be a higher or lower boost psi that returns full fuel.

So I can start by adjusting my wastegate rod to increase max. boost, since the overboost protection valve (if working) will limit to 15.6psi and wastegate (603) is supposed to limit to 10.5psi.? Hopefully the 603 ALDA also has a little headroom to provide more fuel for mid-range boost.

The gauges will tell.

BTW, I noticed that the wastegate actuator rod is adjusbable (factory) on both the turbo from the 603.960 and the .970, only a single thread and lock-nut though, not a turnbuckle type. Not sure how much length is available.

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Gone to the dark side

- Jeff

Where did that 12psi number come from? Was that something someone measured or is in some documentation somewhere?

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For Sale: 1982 MB 300TD
1995 Chevrolet Suburban 6.5TD

Sold: 1980 IH Scout Traveler- Nissan SD33T Diesel

0.7-0.8bar = 10.15-11.6psi.

Going higher than 12psi on stock internal fuel settings only wastes energy by making the turbo and engine work harder to pump extra air that doesn't do anything.

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