Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: bobtheknob on July 26, 2010, 11:47:37 PM

Title: Speedometer
Post by: bobtheknob on July 26, 2010, 11:47:37 PM

so since i have thrown some 33's on the good ole jeep  my speedometer is of quite a bit at higher speeds when i go 50 I'm actually going about 58-60 when i go 110 I'm really going 128 and so on i think i have an idea why its doing this  Just Wondering if there is a way to fix it or just have to keep it in mind????

Title: Re: Speedometer
Post by: tubby on July 27, 2010, 02:48:25 AM

After installing bigger tires, it's important to change the speedo gear so your odometer and speedometer read correctly. The rear of your transfer case has a speedometer gear housing. You must figure out what speedo gear you need, and thankfully there are charts online that will aid you to figure out the correct tooth count. Easy job to do, and the part itself is cheap. Go to a dealership and tell them what your gear ratio in your diff is and what tire size you are running now . They can provide you with the correct part.

Title: Re: Speedometer
Post by: FiEND on July 27, 2010, 08:19:47 AM

http://www.4x4xplor.com/speedo.html

Title: Re: Speedometer
Post by: bobtheknob on July 27, 2010, 12:08:05 PM

thank you all