|
|
|
#1
|
||||
|
||||
What rpm's are you turning at 60mph?
2800 rpm at 60mph on a 1987 260E.....looking for a 2.42 differential to drop rpm's....anyone know what year and models will work? I believe a 1975 300D is 2.42, so what gear ratio is in a 1978 300D?
|
#2
|
||||
|
||||
About 3000 in my 300SE. Less in the CVPI but it has no tach, yet.
__________________
Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952. |
#3
|
|||
|
|||
My 87 300D turns the tach at about 2600 rpm at or about 60 mph.
|
#4
|
|||
|
|||
You may be interested in this formula:
(MPH)(Ratio)x336÷Diameter=RPM MPH=Speed of vehicle Ratio=Differential gear ratio Diameter=Diameter of tire The result, in RPM, is the engine speed for a manual transmission, or an automatic with lockup, with no slip. You need to add about 200 rpm to this figure for operation of a vehicle with an automatic (without lockup) on level ground. BTW, the formula is for vehicles with a 1:1 transmission ratio. If you want to use the formula for other gears, you need to multiply the diff ratio by the gear ratio and substitute that value in the formula for "Ratio". Last edited by Brian Carlton; 05-08-2005 at 10:44 AM. |
#5
|
||||
|
||||
2150 rpm. 97 C280.
.83 5th gear, lockup torque converter, and 3.07 differential.
__________________
Ali Al-Chalabi 2001 CLK55 1999 Dodge Ram 2500 Cummins Diesel 2002 Harley-Davidson Fatboy Merlin Extralight w/ Campy Record |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
W123 Rythmic Wheel Squeal when Turning | PatrickW | Diesel Discussion | 2 | 04-04-2005 08:50 PM |
bigger tires=lower engine rpms | biodieselkid | Mercedes-Benz Wheels & Tires | 2 | 01-22-2005 03:25 PM |
climate control noise when turning wheel? | brente260 | Tech Help | 2 | 01-17-2003 06:39 AM |
Help! 560SL loses power above 4000 RPM's | Jerry Hudson | Tech Help | 17 | 07-30-2002 12:11 PM |
hwy rpm's seem high | angst | Diesel Discussion | 9 | 02-02-2002 03:01 PM |