speedometer inaccurate after swap st165 to st205

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speedometer inaccurate after swap st165 to st205

Postby black88alltrac » Wed Mar 25, 2015 1:24 am

i put the st165 manual speedometer setup in the st205 tranny. i did happen to change out the gear that goes in the transmission and swapped it to the st205 gear thinking that it may have a different number of teeth. now when i drive the speedometer reads 10-20mph higher than normal. when i'm doing 80mph it says i'm doing 100 on the speedometer. My wheel and tire size are close to oem diameter so i dont think it is that.

did anyone else do a st205 swap into a st165? is your speedo accurate?
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black88alltrac
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Re: speedometer inaccurate after swap st165 to st205

Postby scottjackson1209 » Thu Mar 26, 2015 4:15 am

Mine is perfectly accurate above 10mph. It doesn't register anything below 10
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Re: speedometer inaccurate after swap st165 to st205

Postby black88alltrac » Thu Mar 26, 2015 6:35 am

thanks for the reply, i think i just need to replace the part that controls the needle, the odometer reads correctly, i just went 50 miles on gps and it was 50 miles on the odometer even though i was going 70mph on gps but the gauge read 90mph.
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Re: speedometer inaccurate after swap st165 to st205

Postby scottjackson1209 » Thu Mar 26, 2015 6:39 am

That makes no sense, they are driven by the same mechanism I believe...
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Re: speedometer inaccurate after swap st165 to st205

Postby black88alltrac » Thu Mar 26, 2015 3:56 pm

no, the speedo needle is magnetically driven and the odometer is gear driven.
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