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Steering Rack swap?
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I guess the million dollar question is..... What ratio do we go with?My Garage
2001 Z3 2.5i Steel Gray/Black (Lexi)
1988 325ix Diamond Schwartz/Black (Izzy)
1989 325i Cirrus Blue/Houndstooth (Stitch)
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interested, depending on price.318iS Track Rat :nice: www.drive4corners.com
'86 325iX 3.1 Stroker Turbo '86 S38B36 325
No one makes this car anymore. The government won't allow them, normal people won't buy them. So it's up to us: the freaks, the weirdos, the informed. To buy them, to appreciate them, and most importantly, to drive them.
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Originally posted by Kershaw View Post
I do most of my driving in Fieros, which are light in the front with manual steering. The way that hydraulic power steering essentially "clips" the feedback to steering effort has always felt not so great to me.
Installing the steering quickener above of the spool valve will increase the wheel torque necessary to crack the spool valve by the inverse of the quickener ratio and, in my estimation, improve steering feedback.
Of course no matter what iX's have crappy steering feedback for hard pavement driving due to their essentially non-existent caster angle.
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It's been discussed before. It was optimized for weight transfer under acceleration/braking on slick surfaces (ice/snow).
You can use M3 offset CABs and GC camber plates to gain a bit more camber. I think the max is around 2.5-3 degrees - stock is about 1.2 degrees. No real downsides IMO - aside from the camber plates being pretty harsh on the street (zero rubber isolation).
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Sorry for the lack of updates guys. I am starting a new thread for this now in the group buy section.
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bump.
Having another look at this while goofing around with my N52 parts - I think it may be feasible to swap the guts from another rack into the ix rack, with modifications.
the E46 xi rack is wider, but the diameter is really close (16mm vs 17mm), and all the centerlines seem to match up. The E46 input shaft is 3/4" shorter though. I think there's about a 50% chance of those parts working, but there would need to be modifications.
I guess another question is, would the internals of an E36 rack possibly work (flipped over), as I'd bet the width is closer to the E30 ix than the E46 is. Or any other ZF rack with similar dimensions..
What made me think about this again was the E46 rack has a lot of issues with fitment, and it would be waaay simpler to do using the original rack housing. You could use ix tie rods, PS hoses, steering joint, etc.
In the end one of the two bolts that holds the input shaft housing together was rusted to nothing, so I couldn't get it all apart to see - but it's worth investigating further IMO. The thing I notice the most about the E30 when jumping in for a spin is how ridiculously slow the steering is, it drives me crazy.
Anyone have a cheap E36 rack I could borrow? Or take measurements off one? (rack length/diameter, input shaft length).
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