I have this vague recollection of reading somewhere that a 120 series steering box has a "faster" ratio than a 140 one .... is this correct, and are they interchangeable ?

Just wondering whether it might be a good way to quicken up the steering on the rally car .... ie. fewer turns lock-to-lock.

Anyone out there in Brickboard-land know the answer ?

Dave
1974 142S "Erik the Red"
Melbourne, Australia

You can fit the slighty longer 164 idler & pitman arms to the 144. You just have to file the master spline out the pitman arm.

oooooh! Cool, I need to find me a 164 then...
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Kyle - '68 142? - Oregon Volvo Tuners?

mmmm ..... I was obviously dreaming !

Seemed like a good simple idea at the time .... thanks for the input guys.

Next task is fitting the 6 gauge R-Sport gauge cluster (maybe this weekend) ... hopefully that will go smoothly & all the wires will make sense !

Have also scored some 145 springs for the back ..... just have to find some stiffer (NOT lowered) ones for the front now. Anyone know what the "free length" of a standard 140 front spring is ? It's about the only specification that isn't in the workshop manual ....

Dave

the front 140 springs are 10.5" and a rate of #300 with one inch of pre load.

Thanks Fidel

by "#300", do you mean 300 lbs/inch ?

I don't know, but the 1800 boxes are a lot quicker ratio than the Amazon boxes.

Hmmm... every data sheet or road test that I've ever seen for the 1800 or the Amazon indicated 3.25 turns lock to lock. The 1800 has a slightly smaller turning circle (30 vs 32 feet), but that can be accounted for by the 6 inch shorter wheelbase. I always thought the steering components were very similar, if not the same.
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Gary Learned - '71 142E ITB / '73 1800ES / '02 S60 T5

Hmmmm, myself... now I wonder where I got that info. I know that my '67 1800S sure feels a lot quicker than our '66 122S, with similar suspension mods, alignment settings and tire sizes. After driving only the 1800 for two years while restoring the Amazon, I remember being really surprised at how much I had to turn the 122's wheel to go around a corner once I started driving it again.

The steering shafts are certainly not interchangeable. Hmmmmm.

Suggest you look at both and then decide. You can swap but it is NOT a bolt-in.
The 140/164 box is a LOT bigger, especially the power steering box.
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George Downs Bartlesville, Heart of the USA!

For additional fun, the 140 and 164 boxes don't interchange either without some work.

Don't know, but I see V-Performance is working on a rack 'n pinion kit. There are a few new developments for this year, including a 2.5L B20.