Om617 turbo
This was my grandmothers car since new(previously they had a grey market euro 280) and is now mom's but she hardly drives it as I've not installed a sanden compressor yet.
I am two months into daily driving this 78 300D with an k26 swapped onto it. I blocked off the egr ports and softened the wastegate and am running 9/10 psi boost when flat out. I went 2.5 staright pipe past the down pipe. Boost is 7/8 when running 65/70mph with the 3.42 gear and egt's on flat ground are 290-350C until a hill or pass.
The engine runs under 200F unless climbing a rather large hill when the egt's stay at 450C for some time, and this is with the Ada backed out 1.5 turns.
I'm running an external trans cooler line in front of the drivers side tire to help prolong its life and then a 4speed manual is in order.
I am needing to do the oil filter housing gasket and an10 oil cooler lines. I intend to screw in the full load screw one turn to get max egt's up and performance more on par with a factory turbo car.
My old 300sd was a rocket with the Alda unscrewed but this MY78 with 79hp originally is moderately faster and more efficient now, maybe 90 or so hp but still far off the 120hp mark.
If the old motor(with 298k) lets loose I will get a turbo motor in its place. As it is I have turbo injectors and a turbo pump(whose setting would give far more fuel than mine even with the full load screwed in one turn) i would like to install at some point.

Attached Thumbnails