The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-18-2020, 02:38 PM   #1
G-NUT
Registered User
 
G-NUT's Avatar
 
Join Date: Apr 2014
Location: Baldwin County, Alabama
Posts: 162
Hydroboost hose to a rack and pinion ... hose to -6AN fitting?

1984 Suburban. Stock PS pump. Stock hydroboost. I've installed a Mustang 1979-93 rack and pinion. The kit came with a return hose and a pressure hose, but the kit is designed for a convensional / non-hydroboost GM saginaw pump power steering system. I'm wanting to retain my hydroboost system. I need either a hose that will connect at my stock hydroboost unit and go to the pressure port of the rack OR some sort of connector or adapter to connect my stock hydroboost hose to the pressure port of the rack.

From what I've been able to research, all I know is my hydroboost hose has a 16mm fitting on one end and an 18mm fitting on the other (haven't been able to clearly identify which was at the gearbox). Also, the rack and pinion came with an adapter screwed into the rack that is male -6 AN fitting.
__________________
'84 Suburban C10 Silverado - laying pinchweld to the ground on 22/24.
/Porterbuilt / Accuair / Bonspeed / Landsail / Auburn Gear / Richmond Gear / Moser / Raybestos / ProMaxx / Edlebrock / Street Demon / Taylor Wire / K&N / MSD / KillMat /

SOLD: 1985 GMC Sierra Classic 2500 3+3 Crew Cab Long Bed
G-NUT is offline   Reply With Quote
Old 04-21-2020, 04:55 PM   #2
skyphix
Registered User
 
Join Date: Sep 2018
Location: Hampden, ME
Posts: 406
Re: Hydroboost hose to a rack and pinion ... hose to -6AN fitting?

You should be able to get a 16mmx1.5 or 18mmx1.5 to -6AN fitting easily enough from any vendor that sells those sorts of things. Then its pretty simple to make high pressure capable hoses that should work.

I'm not sure if hot rod fuel hose might have something like that, but I know I was able to find a 16mm x 1.5 to -6AN at Summit.


I am not sure if the hydroboost pumps used were the same then as they are on the LS-series engines, but the hydroboost pump on my 5.3 used 16x1.5 at the high pressure port in the pump.
__________________
Eric
1980 C10 SWB
2003 Chevy Suburban 2500 LT

Last edited by skyphix; 04-21-2020 at 05:12 PM.
skyphix is offline   Reply With Quote
Old 04-21-2020, 07:27 PM   #3
hatzie
Moderator
 
hatzie's Avatar
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,911
Re: Hydroboost hose to a rack and pinion ... hose to -6AN fitting?

Power steering pressure and return hoses are a special flavor of hydraulic hose.
Don't use transmission/oil-cooler or fuel line hose. It won't meet the temperature and pressure specs needed for power steering systems.

http://67-72chevytrucks.com/vboard/s...36&postcount=2
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
hatzie is offline   Reply With Quote
Old 04-22-2020, 01:25 AM   #4
layinrocker65
Registered User
 
layinrocker65's Avatar
 
Join Date: Jun 2005
Location: California
Posts: 521
Re: Hydroboost hose to a rack and pinion ... hose to -6AN fitting?

Assemble your own PTFE -6 hose. Pretty simple.
__________________
‘53 GMC COE stock
‘53 Chevy 3100 LSA/TR6060 http://67-72chevytrucks.com/vboard/s....php?t=805949‘
'70 Chevy C10 LWB 350/sm465
‘74 Chevy C10 SWB 5.3/4L80e, Vintage Air, Dakota Digital, US Mags
layinrocker65 is offline   Reply With Quote
Old 04-22-2020, 09:52 AM   #5
skyphix
Registered User
 
Join Date: Sep 2018
Location: Hampden, ME
Posts: 406
Re: Hydroboost hose to a rack and pinion ... hose to -6AN fitting?

Quote:
Originally Posted by hatzie View Post
Power steering pressure and return hoses are a special flavor of hydraulic hose.
Don't use transmission/oil-cooler or fuel line hose. It won't meet the temperature and pressure specs needed for power steering systems.

http://67-72chevytrucks.com/vboard/s...36&postcount=2


Thats great data and a great note. The temperature ranges are well within normal tolerance - just make sure the braided line that you get for the system is rated to 2000ish psi (which is common and easily available) - then absolutely pressure test before you use it.
__________________
Eric
1980 C10 SWB
2003 Chevy Suburban 2500 LT
skyphix is offline   Reply With Quote
Old 04-23-2020, 02:26 PM   #6
G-NUT
Registered User
 
G-NUT's Avatar
 
Join Date: Apr 2014
Location: Baldwin County, Alabama
Posts: 162
Re: Hydroboost hose to a rack and pinion ... hose to -6AN fitting?

Quote:
Originally Posted by skyphix View Post
You should be able to get a 16mmx1.5 or 18mmx1.5 to -6AN fitting easily enough from any vendor that sells those sorts of things. Then its pretty simple to make high pressure capable hoses that should work.

I'm not sure if hot rod fuel hose might have something like that, but I know I was able to find a 16mm x 1.5 to -6AN at Summit.


I am not sure if the hydroboost pumps used were the same then as they are on the LS-series engines, but the hydroboost pump on my 5.3 used 16x1.5 at the high pressure port in the pump.
Thanks for the response.

I have all my hoses lined out except for the high-pressure hose from the hydroboost to the high pressure port on the rack. The hose fitting on the hose from hydroboost to rack is a m18x1.5 male. The rack pressure port is a m14x1.5 female. The kit I have came with a m14x1.5 male to -6 AN male fitting that can be installed in this location.

What I've searched for for days and did not find was a fitting to connect my existing hose to the rack. I needed a connector that was female m18x1.5 to male m14x1.5 OR female m18x1.5 to female -6 AN.

What I ended up ordering to just make my own hose is 3' of Earl's -6 high pressure power steering hose, Earl's -6 AN, 120 degree power steering hose end, Earl's -6 AN, 45 degree power steering hose end, and a Russell -6 AN male to m16x1.5 o-ring power steering adapter.
__________________
'84 Suburban C10 Silverado - laying pinchweld to the ground on 22/24.
/Porterbuilt / Accuair / Bonspeed / Landsail / Auburn Gear / Richmond Gear / Moser / Raybestos / ProMaxx / Edlebrock / Street Demon / Taylor Wire / K&N / MSD / KillMat /

SOLD: 1985 GMC Sierra Classic 2500 3+3 Crew Cab Long Bed
G-NUT is offline   Reply With Quote
Old 04-23-2020, 07:54 PM   #7
skyphix
Registered User
 
Join Date: Sep 2018
Location: Hampden, ME
Posts: 406
Re: Hydroboost hose to a rack and pinion ... hose to -6AN fitting?

Quote:
Originally Posted by G-NUT View Post
Thanks for the response.

I have all my hoses lined out except for the high-pressure hose from the hydroboost to the high pressure port on the rack. The hose fitting on the hose from hydroboost to rack is a m18x1.5 male. The rack pressure port is a m14x1.5 female. The kit I have came with a m14x1.5 male to -6 AN male fitting that can be installed in this location.

What I've searched for for days and did not find was a fitting to connect my existing hose to the rack. I needed a connector that was female m18x1.5 to male m14x1.5 OR female m18x1.5 to female -6 AN.

What I ended up ordering to just make my own hose is 3' of Earl's -6 high pressure power steering hose, Earl's -6 AN, 120 degree power steering hose end, Earl's -6 AN, 45 degree power steering hose end, and a Russell -6 AN male to m16x1.5 o-ring power steering adapter.
Sounds like a good plan. I found a female m18x1.5 to male m14x1.5 on Amazon, search "Fitting Reducer Metric M18 x 1.5 M18X1.5 Female to M14 x 1.5 M14X1.5 Male Gauge Meter"
__________________
Eric
1980 C10 SWB
2003 Chevy Suburban 2500 LT
skyphix is offline   Reply With Quote
Old 04-23-2020, 08:35 PM   #8
G-NUT
Registered User
 
G-NUT's Avatar
 
Join Date: Apr 2014
Location: Baldwin County, Alabama
Posts: 162
Re: Hydroboost hose to a rack and pinion ... hose to -6AN fitting?

Nice. If I'd have discovered that before I spent about $100 on hose & fittings I'd have went that route.
__________________
'84 Suburban C10 Silverado - laying pinchweld to the ground on 22/24.
/Porterbuilt / Accuair / Bonspeed / Landsail / Auburn Gear / Richmond Gear / Moser / Raybestos / ProMaxx / Edlebrock / Street Demon / Taylor Wire / K&N / MSD / KillMat /

SOLD: 1985 GMC Sierra Classic 2500 3+3 Crew Cab Long Bed
G-NUT is offline   Reply With Quote
Reply

Bookmarks

Tags
hydro-boost, hydroboost, power steering, rack & pinion

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:31 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com