where is the banjo bolt on the SDL? Anyone have pics. I see no bolt in the aft side of the fuel control. Is it under the intake??on the right hand side of the fuel control?

The 603 does not have the traditional "banjo bolt" like the 617, IIRC.

What are you looking to accomplish.........what's the issue??

Yep.......'85 was the last year for the 617 in the W126.

603.
no low end power. a dog. 27 second 0-60.

Find the line from the manifold to the overboost valve on the firewall. Remove it and make sure it's perfectly clean.

Find the line from the overboost valve on the firewall to the ALDA. Remove it and make sure it's perfectly clean.

Then get a boost gauge and T it into the line that runs to the ALDA. Take the vehicle for a drive and report back on the gauge readings at various speeds. Make sure you try one run at maximum power in third gear and read the boost gauge.

that you have changed all the filters or know that they are fine. that time seems slow even for a non turbo version if there were any here.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.