Hi,

Used to have a Dawes boost controller on my 83. I recently bought a 3bar racing (same company) controller - looks the same. Problem is, on a 617, the wastegate hose is what? 3/8 ID, but the nipple on the boost controller is maybe 1/8... So poor fit.

I found some tubing that makes a good bushing, and on the straight end it is great... On the other end 90o even with this bushing I can't get a great connection/fit. I tighten down as much as I can, but I don't think the hose clamp has enough overlap over the nipple.

Any suggestion on how to fix and make these two work?

BTW, without the controller, my 82 was only putting out 9.2 psi max. With the controller I can get that optimum 10.75, and slightly faster spool time...

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

Make one with the correct nipples. The dawes valve is nothing more than a check valve with adjustable spring tension. One can be made for about $10.

Adjust the wastegate.

I used a ball valve with 3/8 fittings.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran