Must. II Power steering problem? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Daniel U · 02-28-2007, 07:40 PM

I was wondering if any of you using the Mustang II with power steering had any problem with over steering(or maybe I should say to much power)? My brother decided to go with the manual steering for my mom's because he heard that they have this issue. I bought the rack and pinion PS for mine. I was wondering if those of you who had the PS had any tips or should I use a gear reduction of sorts? Thanks as always, Daniel U

dwcsr · 02-28-2007, 07:58 PM

If you use a ford Pump with the ford rack you'll have no problems. If you use a late model GM you may have problems. If you use a late model that came off a Hydra boost you will have problems.

There is a fix. Heidt's has an adjustable pressure valve that fixes the high pressure that creates the sensitive steering at higher speeds. It will also help if you have your caster set at spec.

The GM pump puts out about 1200 PSI and the ford Rack operates on 800 PSI. So you get the Power Plus steering.

This article explains some of it. The valve is midway down
http://www.thehollisterroadcompany.com/hydroboost.html

Daniel U · 02-28-2007, 10:09 PM

Thanks for the info. I was sure that there was a simple solution/explanation. Much appreciated!

**53burb** · 03-03-2007, 01:40 PM

RBs Obsolete also has a valve for this.....check out this link....http://www.rbsobsolete.com/product.a...=16159&l1=&l2=

Daniel U · 03-03-2007, 03:39 PM

Much appreciated!

dwcsr · 03-03-2007, 04:31 PM

The RB's valve probably a better fix for what you need. Its cleaner looking.

GATORBUILT '59 · 03-27-2007, 12:57 PM

Is there a ready made HIGH Pressure side Power steering hose made for using the SAGINAW style power steering pump with the MII Rack/PINION? Or do i have to fabricate one?

jkaylor68gmc · 03-27-2007, 01:14 PM

They are right, you need the valve

solidaxel · 03-27-2007, 08:24 PM

Are you using the T-bird R&P or the Mustang?

GATORBUILT '59 · 03-27-2007, 08:44 PM

mustang

solidaxel · 03-27-2007, 08:59 PM

They are a little twitchey even with the RB valve, I changed my R&P to the t-Bird and I like it much better. It is 3 1/2 turns lock to lock and I think the mustang is only 2 7/8 lock to lock and you can not do much with that rack!

dwcsr · 03-27-2007, 10:30 PM

Tbrid has 2 ratios get the one with out Sport suspension

slimneverdies · 09-26-2008, 01:02 PM

Im bringing this topic back. I have the complete mustang ll front and now all I need is R&P. Are you guys saying if I want power that its a good choice with the Thunderbird R&P I should go with the matching year Tbird pump and not need any of these valves? Exactly what are the years I need to match for the two? My installer wants me to go with a manual steering but Im gonna drive this thing every day and I need to be comfortable.

Atomsplitter · 09-27-2008, 07:34 PM

This has been discussed in this post already:
http://67-72chevytrucks.com/vboard/s...d.php?t=301181

I had the same problem andf it was corretced by using Mullins kit.

55dude · 09-30-2008, 09:19 PM

though RB'S was out of business?

solidaxel · 09-30-2008, 11:20 PM

Quote:

Originally Posted by 55dude

though RB'S was out of business?

You mean the RB that moved to the Phoenix area?

orgalmeister · 10-01-2008, 09:03 PM

Web site is gone. It was up after the move to Phoenix. Anybody seen them at NSRA or Goodguys events?

02-28-2007, 07:40 PM	#1
Daniel U Registered User Join Date: Oct 2006 Location: Central Coast, CA. Posts: 1,202	Must. II Power steering problem? I was wondering if any of you using the Mustang II with power steering had any problem with over steering(or maybe I should say to much power)? My brother decided to go with the manual steering for my mom's because he heard that they have this issue. I bought the rack and pinion PS for mine. I was wondering if those of you who had the PS had any tips or should I use a gear reduction of sorts? Thanks as always, Daniel U __________________ Mom's 1954 (TBI 5.7/700R4/14 bolt 4:10) 5 Chevrolet window 3/4 ton long bed Pick up build thread ->http://www.67-72chevytrucks.com/vboa...d.php?t=228674 My 1954 (TPI 5.7/700R4/10 bolt 3:73) Chevrolet 5 window 1/2 ton short bed Pick up build thread->http://67-72chevytrucks.com/vboard/s...3&goto=newpost 1960 (400/T350/?) Apache 10 short/fleet side-big window 1973 (TPI 5.7/700R4/14 bolt 4:10 w DANA 60 front) Chevrolet Cheyenne 4X4 2013 (Vortec 5.3/6-speed 6L90 automatic) Sierra LT CREW CAB Doing my part to warm the globe

02-28-2007, 07:58 PM	#2
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,131	Re: Must. II Power steering problem? If you use a ford Pump with the ford rack you'll have no problems. If you use a late model GM you may have problems. If you use a late model that came off a Hydra boost you will have problems. There is a fix. Heidt's has an adjustable pressure valve that fixes the high pressure that creates the sensitive steering at higher speeds. It will also help if you have your caster set at spec. The GM pump puts out about 1200 PSI and the ford Rack operates on 800 PSI. So you get the Power Plus steering. This article explains some of it. The valve is midway down http://www.thehollisterroadcompany.com/hydroboost.html Attached Images Last edited by dwcsr; 02-28-2007 at 08:00 PM.

02-28-2007, 10:09 PM	#3
Daniel U Registered User Join Date: Oct 2006 Location: Central Coast, CA. Posts: 1,202	Re: Must. II Power steering problem? Thanks for the info. I was sure that there was a simple solution/explanation. Much appreciated! __________________ Mom's 1954 (TBI 5.7/700R4/14 bolt 4:10) 5 Chevrolet window 3/4 ton long bed Pick up build thread ->http://www.67-72chevytrucks.com/vboa...d.php?t=228674 My 1954 (TPI 5.7/700R4/10 bolt 3:73) Chevrolet 5 window 1/2 ton short bed Pick up build thread->http://67-72chevytrucks.com/vboard/s...3&goto=newpost 1960 (400/T350/?) Apache 10 short/fleet side-big window 1973 (TPI 5.7/700R4/14 bolt 4:10 w DANA 60 front) Chevrolet Cheyenne 4X4 2013 (Vortec 5.3/6-speed 6L90 automatic) Sierra LT CREW CAB Doing my part to warm the globe

03-03-2007, 01:40 PM	#4
53burb Senior Member Join Date: May 2004 Location: Queen Creek, AZ Posts: 1,010	Re: Must. II Power steering problem? RBs Obsolete also has a valve for this.....check out this link....http://www.rbsobsolete.com/product.a...=16159&l1=&l2=

03-03-2007, 03:39 PM	#5
Daniel U Registered User Join Date: Oct 2006 Location: Central Coast, CA. Posts: 1,202	Re: Must. II Power steering problem? Much appreciated! __________________ Mom's 1954 (TBI 5.7/700R4/14 bolt 4:10) 5 Chevrolet window 3/4 ton long bed Pick up build thread ->http://www.67-72chevytrucks.com/vboa...d.php?t=228674 My 1954 (TPI 5.7/700R4/10 bolt 3:73) Chevrolet 5 window 1/2 ton short bed Pick up build thread->http://67-72chevytrucks.com/vboard/s...3&goto=newpost 1960 (400/T350/?) Apache 10 short/fleet side-big window 1973 (TPI 5.7/700R4/14 bolt 4:10 w DANA 60 front) Chevrolet Cheyenne 4X4 2013 (Vortec 5.3/6-speed 6L90 automatic) Sierra LT CREW CAB Doing my part to warm the globe

03-03-2007, 04:31 PM	#6
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,131	Re: Must. II Power steering problem? The RB's valve probably a better fix for what you need. Its cleaner looking.

03-27-2007, 12:57 PM	#7
GATORBUILT '59 Registered User Join Date: Oct 2006 Location: Pearland,TX. Posts: 141	Re: Must. II Power steering problem? Is there a ready made HIGH Pressure side Power steering hose made for using the SAGINAW style power steering pump with the MII Rack/PINION? Or do i have to fabricate one?

03-27-2007, 01:14 PM	#8
jkaylor68gmc Senior Member Join Date: Dec 2005 Location: TN Posts: 2,448	Re: Must. II Power steering problem? They are right, you need the valve

03-27-2007, 08:24 PM	#9
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: Must. II Power steering problem? Are you using the T-bird R&P or the Mustang? __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

03-27-2007, 08:44 PM	#10
GATORBUILT '59 Registered User Join Date: Oct 2006 Location: Pearland,TX. Posts: 141	Re: Must. II Power steering problem? mustang

03-27-2007, 08:59 PM	#11
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: Must. II Power steering problem? They are a little twitchey even with the RB valve, I changed my R&P to the t-Bird and I like it much better. It is 3 1/2 turns lock to lock and I think the mustang is only 2 7/8 lock to lock and you can not do much with that rack! __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

03-27-2007, 10:30 PM	#12
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,131	Re: Must. II Power steering problem? Tbrid has 2 ratios get the one with out Sport suspension

09-26-2008, 01:02 PM	#13
slimneverdies Registered User Join Date: Apr 2006 Location: Miami now in Vegas Posts: 828	Re: Must. II Power steering problem? Im bringing this topic back. I have the complete mustang ll front and now all I need is R&P. Are you guys saying if I want power that its a good choice with the Thunderbird R&P I should go with the matching year Tbird pump and not need any of these valves? Exactly what are the years I need to match for the two? My installer wants me to go with a manual steering but Im gonna drive this thing every day and I need to be comfortable. __________________ Long live SLIM ------------------ At least try to buy American

09-27-2008, 07:34 PM	#14
Atomsplitter Registered User Join Date: Mar 2006 Location: Ontario Posts: 514	Re: Must. II Power steering problem? This has been discussed in this post already: http://67-72chevytrucks.com/vboard/s...d.php?t=301181 I had the same problem andf it was corretced by using Mullins kit.

09-30-2008, 09:19 PM	#15
55dude Registered User Join Date: Jan 2007 Location: tacoma wa. Posts: 1,037	Re: Must. II Power steering problem? though RB'S was out of business?



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10-01-2008, 09:03 PM	#17
orgalmeister Registered User Join Date: Aug 2004 Location: North Carolina Posts: 291	Re: Must. II Power steering problem? Web site is gone. It was up after the move to Phoenix. Anybody seen them at NSRA or Goodguys events? __________________ '56 truck (the never ending project) '06 Z/71 loaded (daily driver) '07 Mercedes-Benz C-Class (wife's driver) Gone: 72 SB, 67 CST, 57 BBW, 47 Panel streetrod,

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