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Can you reduce the power in the power steering?

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5.8K views 19 replies 13 participants last post by  lucasp  
#1 ·
My 65 came to me without power steering. I suspect it had it at some point, because the idler arm ( if I have the right name off the top of my head is correct ) is curved to go around the power steering ram, which I do not have. I couldn't find a match for the info on my steering box, SMB B with the date code 6J26B under it. Sounds like a 66 steering box, from that.

I have no issues when driving with a little speed, but in parking lots and parallel parking, it's hand of hand getting a bit of a work out. I think if I am right, the box is probably a 16:1 ratio. I'm not sure what would be more effective. Getting the manual steering box or getting a stock power steering kit. I'm not fond of the stock power steering, and I wondered if the power level could be reduced with a different sized pulley or a restriction in the ram system. Speaking of which, I hate seeing the hoses looped under the car. It just looks perfect for catching on something and getting taken out.

I have to assume you folks have already been there and tried that. I read quite a few of the similar threads on the subject. I don't have the skills to do the cut and weld and fab electronically assisted stuff from a Saturn Vue. The Borgeson kit sounds like a pain to get in. I'll have to read more about it.

I just found the steering box decoder web site. It's a 16:1 box.
 
#2 ·
I installed a larger pulley to slow down the pump speed and give less power input. Haven't driven it in 13 years but remember it was an improvement. I can't remember what it came from, found the specs on Ford Pump ID Chart
I think it was one of the 5-1/4" or larger ones.
 
#3 ·
Are you looking to get manual steering, power steering or kinda' power steering? A properly installed manual steering system works great with matching lower steering parts. Likewise, the same goes for power steering though I don't know why you'd want a "kinda" power steering. Isn't that like being "a little bit pregnant"?
 
#7 ·
You are correct, most folks slow pump down with the big pulley on pump. I have heard of a pressure regulator installed on the system to reduce pressure, do not know a thing about these types of riggings.
All I can state is the poster has a 67 steering box (SMB B) which is 16 to 1. Lots of folks run this box and like the feel with manual steering.
If one does find it to hard to turn, then return to the manual steering box (HCC AT) 19 to 1 .
 
#11 ·
Travis,

I want enough power steering to be able to get in and out of parking spots or make a three point turn without getting a serious workout, but I don't want to go all the way to the stock Ford , turn with 1 finger, can't feel the road, level. If I had skinny tires it would be easier, but I think I have 205s. The car's at my dad's right now, as I try to figure out what up with the engine noise.

Chock,

How much easier would the 19:1 box make it able to turn at very low to no speed?
 
#14 ·
I checked, they are 215s all around. It's a pain to turn the wheel when not moving with that much rubber on the ground with a 16:1 steering box.

Oh, wait... was I supposed to bench 300lbs before driving the car? I didn't see that in the shop manual. Probably back in the specs section of the steering chapter.
 
#15 ·
Easily one of the top 10 most repetitively discussed topics on the VMF.

The first link is the most recent and the second one is more salient to your question on the P/S pulley itself.



ex-Global West GM
1991-1995
 
#16 ·
For people who who want to learn something after reading the post and not just make jokes, I found two things that made an noticable improvement to my manual steering. Make sure the tires are inflated well. At least 30psi. Mine were below that, but looked OK visually. Then, top up the grease in the steering box. It took a lot of pumps for it to start pushing out the old grease. I was going to do the math and figure out how much less friction 205s or 195s would have to resist turning, or the affect of different steering wheel sizes have, but I don't think this forum the audience for that sort of detail.
 
#18 ·
you maybe onto something with the tires.
i have no assist on idle. (750 RPMs) over 1000 and im fine. car rolling im fine, try and park it, and i have a problem
everything but the box is new. been through at least 3 pumps all the same issue.
I was thinking my 235/60/14 tires may be too much resistance for a stock system to handle

I wish i can find a pair of 195s to pop on there for an hour

I was thinking of putting on a smaller pulley buy where does one find that
 
#19 ·
Pump. That would be my first thought.
Where are you getting the pumps? They vary greatly in what is considered a "rebuilt" unit.
If the car has always been this way (since you've had it) It's possible at some point the valve has been worked on and
someone changed out the reaction valve springs. (the one's in my '66 GT were swapped because I open tracked that car
and didn't want much boost on the course..... it's about a dead dog for parallel parking though).
Even before I modded the steering I ran DOT sticky 225x50x16 on that car. The stock Bendix system easily handles turning
them at 0 mph.

ex-Global West GM
1991-1995