Why the 33" power steering pressure hose?

[1963JAM]

Couple questions on this issue. High pressure line leaks, so looking to replace it. Why is the replacement line so long for the 12"s from the pump to steering box? Is this Federal power steering pump correct for a 1966 Satellite? First pic is how the pressure line was connected, up over the shock attachment. Second pic is what I've seen posted here on FBBO for line position and third pic shows return line being pushed into pump pulley by the pressure line pump 90 connector. Fourth pic is Mopar parts manual which shows a 90° connection on return line at the pump. Can't find this anywhere in aftermarket world, of it is even a thing this car had.
Is there a better hose option? Have one custom made? Still have to wonder why aftermarket is 33"s long, is there a hydraulic reason?
Thanks and happy New Year.

 

[Kern Dog]

I read somewhere that some pressure hoses had to have some bends in them to reduce resonance/humming in the system.
I'd like to know how that actually works.

 

[R413]

You have a TRW pump, yes it looks original. They had the long lines from the factory. We don't know why, but it is so.

The engine and pump moves and the box does not so length is good.

That return line routing is horrible. Should curve to the rear not the front, way to close to the belt.

 

[Don Frelier]

I think the first pictures hose arrangement is similar to the factory arrangement.

I've never heard nor seen the 90 degree on the return line at the pump reservoir

 

[qkcuda]

Here is a picture of how mine is routed. I replaced the original hoses myself, so I believe this is the factory routing.

 

[AR67GTX]

The second picture looks like my 67 GTX is outed - big loop under the battery tray. I’ve often wondered why so long myself or if it was an incorrect replacement. Hadn’t thought about routing the loop to the rear.

 

[68-500]

I used a 69 hose and changed the fitting on the steering gear box. Much shorter and better routing.

 

[1963JAM]

I read somewhere that some pressure hoses had to have some bends in them to reduce resonance/humming in the system.
I'd like to know how that actually works.

Perhaps. There is harmonic resonance from rotating machinery.

 

[1963JAM]

Here is a picture of how mine is routed. I replaced the original hoses myself, so I believe this is the factory routing.

View attachment 1974868

Wish I could see what the steering box connection looks like. The way the hose sweeps down the inner fender to the box makes me think that connector is not a 90° bend.

 

[qkcuda]

I took a couple of closer pictures for you.

 

[jimbosride]

I read somewhere that some pressure hoses had to have some bends in them to reduce resonance/humming in the system.
I'd like to know how that actually works.

I think your right... Here's a web search of a company that make a fitting to reduce the vibration

• https://www.sunsongusa.com/wp-conte...6_Sunsong-Power-Steering-Sheet_silencer-2.pdf

 

[1963JAM]

I took a couple of closer pictures for you.

View attachment 1974924

View attachment 1974925

Excellent. Thank you. Would you know off hand is that the 33" pressure line?

 

[qkcuda]

It was ordered as a direct replacement for a 66, so I assume so.

 

[1963JAM]

I think your right... Here's a web search of a company that make a fitting to reduce the vibration

• https://www.sunsongusa.com/wp-conte...6_Sunsong-Power-Steering-Sheet_silencer-2.pdf

Thanks. Educational insight. May explain the 33.75" length of these pressure hoses. Length may take place of the silencer mentioned in article. Much like the 15" and 30" length of the earlier short and long ram intakes. Those specific lengths give boost from the bouncing pressure waves on the intake stroke for different rpm ranges. Here I was thinking of having a custom hose made to shorten the pressure hose, but I'll stick with the 'yarder'.

 

[1963JAM]

I took a couple of closer pictures for you.

View attachment 1974924

View attachment 1974925

Heads off. Nothing serious I hope.

 

[1963JAM]

It was ordered as a direct replacement for a 66, so I assume so.

Excellent. Appreciate the reply. Now about that dual snorkel air cleaner.

 

[qkcuda]

New shiny heads are going on. The air cleaner was a 67 440 unit that someone had hacked the snorkels off of. I cleaned it up and it fits around the A/C perfectly.

 

[Fran Blacker]

66 hemi power steering hose.