How do I work out what diff ratio I need?
How do I work out what diff ratio I need?
Turn the wheel TWO revolutions and count the number of driveshaft turns. The number of driveshaft rotations will help you determine your rear axle ratio. For example, if it turned 3 and a half times, it’s a 3.50:1 ratio. If it turned 4 and a quarter times, it’s a 4.25:1 ratio.
What should the diff ratio be on a Sierra differential?
The gear ratios of the MT75-4×4 gearbox are : The plan for this project is to use 265x30x19 tyres, coupled to a 3.62 diff. Ideally, the diff ratio should be closer to 4.27:1 but unfortunately this front diff ratio is not available. With this combination the theoretical top speed would be close to 155mph.
Where can I find West Coast differentials gear ratios?
Find all of the gear ratios available for your vehicle in our Application Guides or call our staff of differential experts at (800) 510-0950 for LIVE help. West Coast Differentials stocks a huge inventory of OEM and Aftermarket Ring & Pinion Gear sets and orders placed before 4 PM Pacific Standard time usually ship the SAME DAY!
How can I tell what ratio of differential I have?
Another way to identify what ratio you have is to undo the T50 Torx bolts securing the rear cover and inspect the writing and stamps on the internal gearing. If you are lucky there will be some handwriting to the large Crown gear. This is easily rubbed off. The 7″ differential below is from a Escort Cosworth 4×4.
Where to find the final drive code on a Sierra differential?
Identifying your Ford Sierra differential. If the donor car is available you can read the VIN plate, for the “Final Drive Code” or “AXLE”. The final drive ratio is describe by a letter. 3=3.62 / 3.64? If the VIN plate is not visible, there maybe a small aluminium tag attached to the top left hand side of the rear cover.
The gear ratios of the MT75-4×4 gearbox are : The plan for this project is to use 265x30x19 tyres, coupled to a 3.62 diff. Ideally, the diff ratio should be closer to 4.27:1 but unfortunately this front diff ratio is not available. With this combination the theoretical top speed would be close to 155mph.
Identifying your Ford Sierra differential. If the donor car is available you can read the VIN plate, for the “Final Drive Code” or “AXLE”. The final drive ratio is describe by a letter. 3=3.62 / 3.64? If the VIN plate is not visible, there maybe a small aluminium tag attached to the top left hand side of the rear cover.
What kind of differential does a Sierra Scorpio have?
The Sierra front diff comes in 2 ratios, 3.62:1 & 3.92:1 (now very rare). 2.0lt DOHC 4×4 Sierra (1982-1993) – 3.92:1 (rare!) 2.9V6 4×4 Sierra (xr4x4i) -3.62:1 Cosworth Sierra 4×4 -3.62:1 1.8 Turbo Diesel Sierra (with ABS) -3.62:1 Cosworth Escort 4×4 (1992-1996) -3.62:1 Granada Scorpio (1985-1991) -3.62:1
How can you tell if a Sierra differential is LSD?
The only real way to identify a diff is to physically test it. For instance, if you turn the front flange and both drive flanges rotate in the same direction, it’s an LSD. As a rough guide….. Identification on Tag. On some Sierra diff ID plates the numbers will be in a different format. There will be some numbers / letters (look at the top row)
