Recalibrate Speedo's after wheel upgrade?
- Thread starter RichardT
- Start date
Silverwulf
Adventurer
I was going to have Norcal Speedo in Santa Rosa,ca do mine...but then I have gps speedo on my iPhone. Which is free.
Just in case your interested...
My Dad has used them for MANY years. Always with good results.
Nor-Cal Speedometer
Address
1728 Piner Rd
Santa Rosa CA 95403
Phone
(707) 576-1766
Just in case your interested...
My Dad has used them for MANY years. Always with good results.
Nor-Cal Speedometer
Address
1728 Piner Rd
Santa Rosa CA 95403
Phone
(707) 576-1766
RichardT
Adventurer
Thanks for the reference, although I think the drive from down here in Orange County might be a little prohibitive
In your experience however, is this usually expensive?
Silverwulf
Adventurer
Dont drive here, Lol! Just fedex the cluster, then they fedex it back. Most likley @ $100.
off-roader
Expedition Leader
I'm cheap so I figured you can also just figure out what the speedo reads for key MPH's (25, 35, 45, 55, 65, & 70 mph). Borrow/use a gps to figure that out and just remember what your speedo reads at each of those speeds.
I find with 35's my actual speed is ~15% greater than what my speedo is reading.
For speeds up to 35, I'm ok just below those speeds on the speedometer.
For 45, I run a few mph below 40.
For 55, I run at 45.
For 65, I run at 55.
For 70, I run at 60.
At those indicated speeds, I know I'm a little over what I'm trying to run but I've never seen anyone bothered for that kind of difference and especially in a lifted 4x4.:ylsmoke:
I find with 35's my actual speed is ~15% greater than what my speedo is reading.
For speeds up to 35, I'm ok just below those speeds on the speedometer.
For 45, I run a few mph below 40.
For 55, I run at 45.
For 65, I run at 55.
For 70, I run at 60.
At those indicated speeds, I know I'm a little over what I'm trying to run but I've never seen anyone bothered for that kind of difference and especially in a lifted 4x4.:ylsmoke:
GrassCat
Adventurer
Just change the Speedometer Drive gear in the transmission and be done with it.
Dealer parts:
MD705466 - Gear, Speedometer Drive (N=26): For 4.625 gearing and stock (225/235) tires
MD705464 - Gear, Speedometer Drive (N=24): For 4.625 gearing and 31" tires
MD705463 - Gear, Speedometer Drive (N=23): For 4.625 gearing and 32" tires
MD705462 - Gear, Speedometer Drive (N=22): For 4.625 gearing and 33" tires
MD705461 - Gear, Speedometer Drive (N=21): For 4.625 gearing and 35" tires
MF472536 - Spring Pin, Speedometer Drive Gear (3x16mm)
MD701788 - O-ring, Speedometer Drive Gear (10.3mm)
MF520403 - O-ring, Speedometer Drive Gear Casing (35mm)
Dealer parts:
MD705466 - Gear, Speedometer Drive (N=26): For 4.625 gearing and stock (225/235) tires
MD705464 - Gear, Speedometer Drive (N=24): For 4.625 gearing and 31" tires
MD705463 - Gear, Speedometer Drive (N=23): For 4.625 gearing and 32" tires
MD705462 - Gear, Speedometer Drive (N=22): For 4.625 gearing and 33" tires
MD705461 - Gear, Speedometer Drive (N=21): For 4.625 gearing and 35" tires
MF472536 - Spring Pin, Speedometer Drive Gear (3x16mm)
MD701788 - O-ring, Speedometer Drive Gear (10.3mm)
MF520403 - O-ring, Speedometer Drive Gear Casing (35mm)
Silverwulf
Adventurer
Yay!!! Thanks Grasscat! I had no clud mitsu had those, AND I used to be a mitsu parts guy, :Wow1:
theicecreampeople
Adventurer
you may be surprised ,try the gps before you get your spedo reset ,the fj (i know not same rig )but they are set slow from factory ,3mph ..when did my lift and added 33in tires my speedo was right on the money ?just a thought before you spend any money ...