I have a 84 300 turbo diesel and the wastegate adjustment location is very close to the inside finder ,there is about 2 inches of clearance. Has anybody
adjusted one of these with normal tools or without raising engine up to gain access. Thanks

Are your motor mounts sagging??? The adjustment is usually easier to get to than that, but still requires avery short allen wrench...Bert

I would like someone to confirm something for me. I am looking at a tutorial for adjusting the KKK turbocharger and the description seems kinda vague to me. It says "The adjusting screw sticks right out of the top (sideways on engine) of the wastegate chamber and does not require removal of a cap."

What I see is an adjustment screw sticking horizontal out of the bottom of the turbo compressor and right above the motor mount. I'm sure this is it but I would feel a lot better adjusting it with some confirmation.

Is that locknut the same 8mm that's found on the Garret? It looks like a PITA to adjust. I'm worse than lakerat. I only have about 1" of clearance. Hmmm, I'm gonna have to do a search on motor mounts.

Thanks

Danny

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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Danny, I have a 83 300TD with the same turbo. What I found is that there is a vertical drop of the walls near the wastegate. That said looking into mounts won't help. I took few pictures how to do it, and some other projects, but for the life of me I can't find the cable that connects the Digi to my laptop. I'll post pictures as soon as I find the cable.

Question for the forum members: In order to increase the boost should I turn the 3mm alen CW or CCW (after the release of the lock nut)?

Thanks in advance, Yossi

If you search for posts under my name in the member list you will find a picture of the waste gate. I adjusted mine with out a problem, BUT you need a shorty allen wrench and you will burn a few knuckles on the turbo in the process.

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1983 300SD
200000miles

It should be, "you WILL burn a few knuckles on the turbo in the process."

To increase boost, turn it CW, higher spring tension means more air PSI to compress the spring before opening. You NEED a boost gauge before adjusting boost. It's impossible to adjust it by "feel" without breaking something.

I don't know about others, but my KKK turbo is really bad about boost creep. Under load above 3500rpm, it will creep up about 4psi no matter my base setting. I think the A/R is just a little too small for a 3L engine.

I dream of a day, when I can have twin Garrett VNT-15's on a 4BT Cummins under the hood.
...Does anybody want to sponsor me?