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#1
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steering rack gear ratio change
has anyone ever tried to change the gear ratio of the svx steering rack for more response?
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Tranny goes in, tranny comes out, tranny goes in.....AW ****, tranny comes out.... |
#2
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Re: steering rack gear ratio change
Where do you come up with all these ideas? Are you AADD?
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#3
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Re: steering rack gear ratio change
Check out my thread from several months back on this topic. The 4WS box has a better ratio, just can't find them. There are ratio boxes you can put in line that change the ratio by 1.5 to 2.0:1. Another alternative is trying to find another rack that could be adapted to our track width.
Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#4
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Re: steering rack gear ratio change
no, actually thought came to mind from a guy at snowkana who had the steering rack in his sti modified so as such that he would never need to go hand over hand to turn completely,
i was wondering if anyone who race's their SVXs have done it. apparently there used to be a company called Q-rack that modified the racks
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Tranny goes in, tranny comes out, tranny goes in.....AW ****, tranny comes out.... |
#5
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Re: steering rack gear ratio change
Interesting idea. If money isn't an object you could just order the parts from a 4WS car's rack and make one I bet. Or just order an entire rack from a 4WS model. Have to see if they made a LHD car with the different ratio.
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2007 GS 450h-Active Stabilizer/Radar cruise 1994 L Blue 3.70 VTD ASE Master Automobile ASE Advanced Level Specialist Toyota Master Diagnostic Technician (former life) |
#6
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Re: steering rack gear ratio change
what did the guy use that modified the SVX to have snow mobile tracks instead of wheels ?
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1995 LSI, Added the following - Gear Firm-Up unit (that I sell) together with Power TCU ROM & Power switch, K&N air filter, SVX side badges (USA type), Rear Deck Blower (JDM type), Side front markers (USA type), Side rear markers (USA type), Middle rear light (USA type), USA OEM Fog Lights fitted into NZ OEM glass (NZ OEM headlights had only reflectors fitted) Full set of yellow (90SH) Polish bushes includes 15 min mod, R1 Concepts drilled/slotted/gold finish rotors & Red covered braided brake lines (both from Dayle at Motorsport warehouse), EBC Redstuff brake pads. Full SVX bra (only used for shows). Koni adjustable inserts fitted inside OEM strut body, Zoom lowering springs (2" lower), OEM headlight washers fitted. |
#7
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Re: steering rack gear ratio change
i think those setups just bolt onto the existing hub
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Tranny goes in, tranny comes out, tranny goes in.....AW ****, tranny comes out.... |
#8
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Re: steering rack gear ratio change
I've given this a bit of thought at well. The steering "reducers" all scare me a bit, I don't want my car's steering going through a component that might not be up to the task.
I have a feeling that an STi rack could be made to work. It would take custom mounts to do it, but if the tie rod thread and steering input spline matches ours then we could conceivably make it work. Google tells me that the SVX has a front track width of 59.1” while the ’05 STi (and I suspect this applies to all 05-07 STi’s) is 58.9. Track width isn’t the whole story, knuckle design, bearing offset and even alignment affect that number, but I suspect they’re close enough that the adjustment in the tie rods can accommodate. Functionally I don’t really know what to expect though. Another quick Google search got me 1200 PSI as an operating pressure for the STi pump. I’m not sure what the SVX operates at, or exactly how the variable assist works, so I don’t know what the impact would be of plugging SVX hydraulics into an STi rack. Too heavy? Too light? Just bad? CEL from losing the rack wiring?
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Chris 92 Ebony Mica LS-L "A Rolling Restoration": 223,250 KM - Sleeping 2007 STi 6MT, Stance GR+ coilovers, PWR Rad, JDM hood badge, svxfiles 6000K HIDs, JDM Clear Corners, $15/15 min mod, $20/20 min mod, Energy Swaybar Bushings, Hella Supertones horns, Gold STi BBS rims, Group A lightweight crank pulley, A/C system removed, Custom header-back exhaust, Hybrid carbon/metal rear sway bar, restored headlights with CCFL halos 2008 Subaru Legacy Spec B - Diamond Grey Metallic - Sold 2020 Ram 1500 Longhorn - Red Pearl |
#9
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Re: steering rack gear ratio change
Quote:
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'92 SVX LS Pearl White - 6mt |
#10
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Re: steering rack gear ratio change
Any update on this thread? Need to replace the rack in my 95 LSi w/electronic variable steering which I've read has a16.2 to 1 ratio.
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