speedo reduction
I lifted my '84 3" and put 33" tires on it, and I got a ticket last night. My speedometer is obviously off. I think I'm about 10 m.p.h. off. Meaning I need to lower the speedometer. Anything out there I can just swap over?
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Go 10 mph slower. :hillbill:
GPS will help you know how much it's off or just drive beside someone checking their speedo that's correct. I don't think there's an easy way to recalibrate your speedo. :wabbit2: |
What about changing gear ratios in the speedometer gear set? If I raise the gears it should lower the speed... Or is it the other way...?
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You've probably got 4.10's, so at 55 mph on the speedo you're doing roughly 65 mph, 65 on the speedo is roughly 77. I don't know of any different tooth count gears for the transfer case to correct the speedo. There's always the option of changing the gears in the thirds.
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So if u put bigger tires on are u going faster or slower than ur speedo
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regear
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Originally Posted by Jmitchell5
(Post 51687163)
So if u put bigger tires on are u going faster or slower than ur speedo
bigger tires + stock gears = speedometer reads slower than actual speed |
They have a speedometer reduction piece that goes between the transmission and the speedometer cable just for that. Where, and if they make it for a toyota, I don't know. But its something to look into. And here it is https://www.yotatech.com/forums/f116...l-pics-195986/
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Speedo reduction
Thanks Bull, that was really helpful. I called Commercial Speedometer, they're sending my reduction box tomorrow.
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Let me know how it turns out. I might have to get one also after I put the rebuilt motor in next weekend. I have been running 36's and 33's for 7 years now and its always been off, lol.
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Got it taken care of. The guys down at Commercial Speedo in Sacramento were knowledgeable and very helpful. I recommend them to anyone having a speedometer issue. Thanks for all you help guys!
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have any idea what they did to fix it? i thought it was cable driven so you cant adjust it
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For about $88.58 they built me a gear reduction box. It's about 3" x 2" and goes in line to the speedo cable. https://www.yotatech.com/forums/f116...l-pics-195986/
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