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Hose size help!

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Old Dec 30, 2019 | 07:11 PM
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Default Hose size help!

Can someone please tell me the hose size for the Power steering reservoir? Relocating res. for ffim.


thanks fellas
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Old Jan 7, 2020 | 02:13 PM
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Why are you relocating?

Not a bad idea to get it out of the way.

Mine is a nipple with O-ring that slips into the pump.

I suppose you could tap the pump inlet with an NPT or AN fitting its not under much pressure.

Pic of pump rebuild below...


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Old Jan 7, 2020 | 03:36 PM
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Joe, are you relocating the GE power steering reservoir for an angled aftermarket FFIM or are you installing a GTE/OEM style FFIM?

What I also found is that the metal hose elbow that bolts onto the PS pump for the GTE style remote reservoir is at a different angle for the MKIV/Soarer application vs the GS/Aristo application. Meaning two different little outlet elbow designs that allow for different direction/routing of the PS hose to the reservoir depending on the chassis it was intended for.

For an aftermarket application I guess it just depends on where you will be planning to relocate whichever reservoir you are using.

Edit-- From this SF thread it the TT reservoir hoses are 5/8ths diameter and 3/8ths diameter respectively:
https://www.supraforums.com/threads/...ameter.945338/

Had to look it up since in my case I just bought the OEM hoses from Toyota.

Last edited by KahnBB6; Jan 7, 2020 at 04:10 PM.
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Old Jan 8, 2020 | 06:52 AM
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I remember struggling immensely with getting a new PS return hose on my SC300. I think I went with the 3/8" (0.375) standard size and determined that the real measurement is 9mm (0.354), which isn't available domestically. At least not in bulk. I didn't think to buy OEM hoses for the application (hindsight!), so I didn't check on how they're sized.

Everyone knows how hard it can be to get a crusty old hose off. In this case, it was equally difficult getting a fresh hose on. Maybe more so, since the goal was to NOT shred it in the process.
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Old Jan 9, 2020 | 03:53 AM
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Originally Posted by KahnBB6
Joe, are you relocating the GE power steering reservoir for an angled aftermarket FFIM or are you installing a GTE/OEM style FFIM?

What I also found is that the metal hose elbow that bolts onto the PS pump for the GTE style remote reservoir is at a different angle for the MKIV/Soarer application vs the GS/Aristo application. Meaning two different little outlet elbow designs that allow for different direction/routing of the PS hose to the reservoir depending on the chassis it was intended for.

For an aftermarket application I guess it just depends on where you will be planning to relocate whichever reservoir you are using.

Edit-- From this SF thread it the TT reservoir hoses are 5/8ths diameter and 3/8ths diameter respectively:
https://www.supraforums.com/threads/...ameter.945338/

Had to look it up since in my case I just bought the OEM hoses from Toyota.
I’m going with a non angeled, eBay front facing intake manifold. Gonna have the mounting plate removed, have the intake shortened and weld on a D-plenum q45 adapter.

I ordered some 5/8 and 3/8ths size hoses from drift motion.
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Old Jan 9, 2020 | 08:07 AM
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I had a funny feeling when I went to bed last night that the numbers I posted didn't make any sense... Sure enough, looking back, I wrote 9mm instead of 10mm (0.394). If someone has a new OEM return hose lying around, I'd be curious to see the I.D. measurement. I'm guessing it's not 3/8".
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Old Jan 9, 2020 | 04:56 PM
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Originally Posted by t2d2
I had a funny feeling when I went to bed last night that the numbers I posted didn't make any sense... Sure enough, looking back, I wrote 9mm instead of 10mm (0.394). If someone has a new OEM return hose lying around, I'd be curious to see the I.D. measurement. I'm guessing it's not 3/8".
been researching and I’ve came across info about numerous hose sizes. Hope someone gives some good info with the actual hoses sizes.
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