Hi guys! I read with interest your comments on boost pressure. I drive a 84 300SD though it stays in the garage mostly. Recently I converted a 1960 studebaker 3/4 ton pickup by installing an engine from an 85 300 SD. It performs quite well but would like to find a speedo drive gear that would slow the speedometer down about 5MPH. The trans is from a 300D with a standard cable.
The interest in boost pressure comes from the new turbo recently installed in the pickup. 1.1 bar translates to 15.95 PSI boost. I have connected the ALDA direct to the manifold and eliminated the overide circut. That means I am depending on the waste gate to control the boost. How much greater than 16 is safe. My waste gate is adjustable and I have a 3" straight exhaust. Connecting a boost gage is easy but where would one best connect the EGT gage for the correct reading while doing trial and error with the waste gate. I have alwo removed the EGR.