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#1
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speed calibration for 5-speed swap?
the 5-speed swap is pretty much complete on my 92 SVX. We used a 98 Forester 5-speed with 4:11 diffs. We ended up useing the SVX speed sensor from the auto tranny. The Speedometer is reading much higher than actual speed. I haven't figured out how much it is off yet. but will my speed be different if I use a speed sensor from a Forester 5-speed tranny. Or does the pick-up gear for the speed sensor in the tranny need to changed. I'm curious what other SVX's with 5-speed swaps are useing for Speed Sensors and how much your Speedo is off. Is there a way to recalibrate are Speedometers.
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#2
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Congrats on the swap!
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1993 25th Anniversary Edition # 156 of 301 ~ 121, 488 miles ( SOLD TO svxfiles 8/6/06) 2006 Subaru Impreza 2.5i....5spd - My daily driver 2006 Subaru Legacy 2.5i -7k miles..Mom's daily driver 2,543 Member of the SVX World Network |
#3
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SVX speed sensor? manuals dont have speed sensors in the transmission.
I believe the speedo problem lies in the tire size difference. Also note that your mileage is going to go up faster this way. |
#4
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Quote:
Mine seemed to be very close to right...,, but like he said, the only difference is the difference in the circumfrance of the SVX, and the Forester tires...
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Huck Subaru Ambassador 92 SVX LS-Tour Magnaflow Exhaust, 5-Spd-AWD 88 XT6 AWD 5-Speed "Bride of FrankenWedge" 15 Impreza Premium Sedan 15 Crosstrek XV 5-Speed My 5-Speed "How-To" Write-up 1976 Pontiac Firebird Formula Current Count of Subaru's Owned.... "70" |
#5
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what speed sensor?
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#6
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so is there no fix to make the speedo and mileage accurate? My main concern is all the extra mileage that is going to put on the odometer. I insured the SVX as a 2nd vehicle for under 10,000 miles a year. If i go over 10,000 miles a year my insurance rate will go up a little. It would really suck to actually drive 10,000 miles a year but the odometer show I went 12,000. It will also hurt resale value with extra mileage that is really not there.
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#7
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Huck Subaru Ambassador 92 SVX LS-Tour Magnaflow Exhaust, 5-Spd-AWD 88 XT6 AWD 5-Speed "Bride of FrankenWedge" 15 Impreza Premium Sedan 15 Crosstrek XV 5-Speed My 5-Speed "How-To" Write-up 1976 Pontiac Firebird Formula Current Count of Subaru's Owned.... "70" |
#8
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Normally, if you use the correct differential for the tranny you installed, (i.e., if the tranny came out of a car with 4.11 diff, and you installed a 4.11 rear diff in your SVX), then the speedometer should read correctly. You are the first that I've heard where the speedo isn't reading correctly. If you've installed the proper rear diff, and the speedo is still not reading correctly, send me a PM, and I can set you up with an electronic box that will allow you to make the speedo read correctly. The box costs $100.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#9
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Quote:
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#10
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I don't know if the SVX unit is a hall-effect or an inductive type, but it does produce a pulse signal. I have access to correction boxes similar to the "yellow-box". The box I use works with the SVX unit. I've got one on my car.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#11
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When I did my swap I kept the WRX speed sensor with no issues. I've also run with the SVX sensor in there (currently)
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#12
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Quote:
And will someone say what this speed sensor is? |
#13
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The Speed sensor screws into the tranny where the speed-o cable normally goes, and converts the rotation of the Speed-o gear into an electronic signal the ECU can read (as the SVX doesn't use the Speed-o cable)
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Huck Subaru Ambassador 92 SVX LS-Tour Magnaflow Exhaust, 5-Spd-AWD 88 XT6 AWD 5-Speed "Bride of FrankenWedge" 15 Impreza Premium Sedan 15 Crosstrek XV 5-Speed My 5-Speed "How-To" Write-up 1976 Pontiac Firebird Formula Current Count of Subaru's Owned.... "70" |
#14
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Changing diff ratios causes the speedo to read incorrectly because the speedo reads off the 3rd/4th driven gear cluster on 5MTs. Any change to the diff ratio then affects the relationship between the rpm of the 3rd/4th gear cluster and the rpm of the tires.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#15
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Ok I ran my SVX with a GPS today. my speedo/odometer is running 10% too high.
mtboloczko, i'm interested in the speed calibration box. Can you PM me or post product info. Thanks. |
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