May 29, 2020, 12:56:46 AM

Author Topic: Power steering/SBC help  (Read 519 times)

Offline FC355

Power steering/SBC help
« on: March 18, 2020, 09:44:53 PM »
Hi all, so I'm starting to drive my small block chevy '87 around now so of course things are starting to break.  Most recently, headers burned through the power steering hose.  I believe it's the mazda power steering pump, 2 hose version.  For headers, I have Hedman Headers 69640.  The pump/reservoir is just about kissing the #1 header, and one of the lines was evidently too close to 1 as well. 
Are there better headers out there I could be using?  Am I better off mounting a remote reservoir?  Or just put some heat sheathing on the line that burned through?  I'm concerned that the reservoir is going to overheat even if the line holds from here on out.  Thanks for the thoughts. -Calvin
Possible PS kit - https://www.summitracing.com/parts/aaf-all48242
Current headers- https://www.hedman.com/product-detail/69640

Offline freeskier7791

Re: Power steering/SBC help
« Reply #1 on: March 19, 2020, 07:22:42 AM »
can you run a remote reservoir on the mazda pump?  Moving to a chevy pump requires you to regulate the pressure for the rack.  Turn One sells a nice piece for that but it is another $100-$200
https://www.youtube.com/thedriftingdad
1985 Mazda RX7 GSL Drift Car

CCVT

Offline shainiac

Re: Power steering/SBC help
« Reply #2 on: March 19, 2020, 08:00:27 AM »
You should look into running a GM Type II pump. They're the standard pump type for Nascar and a lot of circle track stuff and can be had for about $80 online. The aftermarket ones come with a 6AN outlet and 10AN inlet for a remote reservoir. TurnOne sells a drop-in restrictor for the RX7 rack that's like $30. You shouldn't have trouble finding a mounting solution for a SBC and the Type II pump, either. I'm using on an LS in place of the factory F-body pump and haven't had any issues.

https://www.ebay.com/itm/NASCAR-POWER-STEERING-PUMP-USED-2-RACES-AN-10-AN-6-FITTINGS/253870504613?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
'88 TII -  SBE 5.3L, Twin EFR 6758s, T56 Magnum, Ronin 8.8" IRS, MS3Pro Ultimate
716whp/662wtq @1.3bar

Offline FC355

Re: Power steering/SBC help
« Reply #3 on: March 19, 2020, 10:21:18 AM »
Hi guys, thanks for the good info, this is great.  Wasn't aware of the type 2 pump option, sounds like a reasonable option to pair with the regulator from turn one.  I'll take a look and see if I can just separate the reservoir as well as another potential route.  Appreciate the help!

Offline DDv8

Re: Power steering/SBC help
« Reply #4 on: March 20, 2020, 12:28:36 AM »
You have speed sensitive assist.  Includes a 3 hole rack, 2 section pump, steering angle input, speed reference .  The reservoir has a ~ 5" o ring around the perimeter with flooded intake.  This pump also has 2 sections one low volume (small line) and one high(big line) third line is return to the reservoir.  I made a longer bracket to move the pump away from the header ~ 1".  I also added a ps cooler for more efficiency (junk yard mini van).  You may also be over speeding the pump if your lower pulley is bigger than 6".  The speed sensing s5 pump has a much narrower reservoir.

DD 
« Last Edit: March 20, 2020, 12:45:59 AM by DDv8 »
86fc old school 327, T5, converting to 8.8 tbird

Offline shainiac

Re: Power steering/SBC help
« Reply #5 on: March 20, 2020, 07:55:50 AM »
For reference, here's how compact the GM Type II is.

Without the pulley, bolted to bracket (3/4" aluminum plate infront and behind.)


No bracket, but with the pulley. I'm using an OEM BMW remote reservoir.
'88 TII -  SBE 5.3L, Twin EFR 6758s, T56 Magnum, Ronin 8.8" IRS, MS3Pro Ultimate
716whp/662wtq @1.3bar

Offline FC355

Re: Power steering/SBC help
« Reply #6 on: March 20, 2020, 10:02:44 AM »
Thanks for the info, guys.  So to verify- going with the aftermarket PS pump, I'll need to the T-line paired with a fuel regulator then like the one from Turn One.  That in turn will eliminate the variable speed functionality.  Am I missing anything else? 

Good call on the pulley size and the cooler as well, thanks. 

Offline shainiac

Re: Power steering/SBC help
« Reply #7 on: March 20, 2020, 10:14:39 AM »
Not sure what you mean regarding the regulator. The TurnOne restrictor replaces the outlet fitting in the pump. That's all you'll need besides lines and fittings. Also, with a 3 port rack, you'll plug one port and use a 6AN adapter for there other two. There are already some good threads that explain that.
'88 TII -  SBE 5.3L, Twin EFR 6758s, T56 Magnum, Ronin 8.8" IRS, MS3Pro Ultimate
716whp/662wtq @1.3bar

Offline FC355

Re: Power steering/SBC help
« Reply #8 on: March 20, 2020, 10:24:05 AM »
Sorry, meant to say restrictor.  On the right page now, thanks.

Offline FC355

Re: Power steering/SBC help
« Reply #9 on: March 23, 2020, 04:29:09 PM »
Hey guys, I'm sry to keep harping on this but I've confused myself after looking over a few sources.  If I T the lines, so using all three ports, I'm still going to use the restrictor on the pump?  Or three ports=no restrictor necessary?  And conversely, could I just block off a port if i do go with the restrictor, eliminating the need to T the lines in the first place.  Thanks again!