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| TUF250 |
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hi all,
this was raised at a party i was at on the weekend... my car is a series one EL and had a 3.25 diff fit by the previous owner... the speedo underreads (ie. at 100kph indicated on the cluster it is actually only doing about 90-91 kph) does this mean my car would not have done as many kilometers as the odometer says so? (ie has the car done less milage than it says) not something i had considered before |
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| TUF250 |
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any ideas? i suppose it depends on where the odometer gets it information from
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| OZBMX |
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short answer yes, but how significant of a difference, depends.
how many k's since the diff was fitted etc.
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| TUF250 |
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problem is i have no idea, what sort of difference in milage would we be talking from 3.27 to 3.45 over lets say 100,000 actual?
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| Krytox |
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Transmission could have been changed too.
Your car may have a speedo driven gear to suit a 3.08 diff, hence the lower actual K's. Here's a guide for the correct gear to be fitted. gearbox-suspension-brake-driveline-f4/ef-el-1994-1998-speedo-sender-drive-driven-gear-t71134.html?hilit=driven And as above yes, your car has actually done LESS k's than indicated, bare in mind MOST people change instruments in a car, especially if there has been diff change. Police clusters are also good for correcting the gauge documents.php?d=14
_________________ Carefree, we may not be number one, but we're up there. |
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| Mad2 |
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TUF250 wrote: problem is i have no idea, what sort of difference in milage would we be talking from 3.27 to 3.45 over lets say 100,000 actual? sweet fa! ... yello peril had a 3.23 changed to a 3.45. speedo, & speedo error went from approx 10% [9k's] to 1 k [?%) with the same green speedo drive [used the speed check on freeway]. Krytox wrote: Transmission could have been changed too. Your car may have a speedo driven gear to suit a 3.08 diff, hence the lower actual K's. Here's a guide for the correct gear to be fitted. gearbox-suspension-brake-driveline-f4/ef-el-1994-1998-speedo-sender-drive-driven-gear-t71134.html?hilit=driven And as above yes, your car has actually done LESS k's than indicated, bare in mind MOST people change instruments in a car, especially if there has been diff change. Police clusters are also good for correcting the gauge documents.php?d=14 aussie cars used to have an approx 10% over speed reading ie doing 100KPH, actual is more like approx 91 KPH. so op's caris reading fine. yes i know i'm thread mining! ....... currently going thru "interior mods" & this popped up  how does one get flamed nowadays......... |
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| johnnyeHCF |
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Mad2 wrote: TUF250 wrote: problem is i have no idea, what sort of difference in milage would we be talking from 3.27 to 3.45 over lets say 100,000 actual? sweet fa! ... yello peril had a 3.23 changed to a 3.45. speedo, & speedo error went from approx 10% [9k's] to 1 k [?%) with the same green speedo drive [used the speed check on freeway]. Krytox wrote: Transmission could have been changed too. Your car may have a speedo driven gear to suit a 3.08 diff, hence the lower actual K's. Here's a guide for the correct gear to be fitted. gearbox-suspension-brake-driveline-f4/ef-el-1994-1998-speedo-sender-drive-driven-gear-t71134.html?hilit=driven And as above yes, your car has actually done LESS k's than indicated, bare in mind MOST people change instruments in a car, especially if there has been diff change. Police clusters are also good for correcting the gauge documents.php?d=14 aussie cars used to have an approx 10% over speed reading ie doing 100KPH, actual is more like approx 91 KPH. so op's caris reading fine. yes i know i'm thread mining! ....... currently going thru "interior mods" & this popped up how does one get flamed nowadays......... Ray Meager would say "ya use a flamin flame thrower-it's flamin easy" lol
_________________ XG DOHC-BARRA 182/Turbo kit/20% Underdrive and BA 4-SPEED + Tiptronic shifter |
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| Mad2 |
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johnnyeHCF wrote: Ray Meager would say "ya use a flamin flame thrower-it's flamin easy" lol lol  
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