AlanMcR Expert
Date registered: Apr 2006 Location: US, CA, Los Altos Vehicle(s): G300DT E300DT 230SL Posts: 3500
| RE: Engine Tunning (om617.931) / shoocks
Are you sure you need a a different turbo? I thought the stock turbo was capable of moving a lot of air. As far as the pump goes, as you try to get more fuel from it you wind up with a longer stroke. The extra fuel comes later and later in the combustion cycle. The crazy Finns who pushed a OM603 to ~450HP used a modified pump. As far as I could tell the major modification was to replace the plunger/cylinder set with one with a larger diameter. This pushed in more fuel earlier. Supposedly, they actually improved mileage. The latter effect could be more easily attributed to the very cool set of exhaust headers they fabricated.
Anyone got a set of OM606 headers and 20% larger pump plungers? |