PeachParts Mercedes-Benz Forum - View Single Post - I reached warp speed today... 110mph in a NA 300d

pawoSD · #7 06-30-2006, 08:31 PM

That speedo is for a car with a much different rear differential ratio than yours, so it thinks your going a lot faster than you actually are. (Driveshaft RPMS way higher at a given speed on your car than they would be on the car that speedo is from) I'd bet its reading about 14-16mph too high, especially if the speedo is from a 2.88 or 2.47diff car and your N/A 300d has a 3.69 (I think) ratio. I bet when you were going "110" you were actually going about 90-93mph or so. Your odometer is also reading too high, meaning its saying you've gone a lot farther than you actually have.

A turbodiesel 300d or 300sd with a 3.07 differential can barely get over 110mph. My dad's and mine both top out around 114ish, thats when they hit the redline limiter. A N/A 617 also has about 40 less horsepower than a turbo model, also limiting top speed.