De-Powering a power steering rack.
09-10-2007, 01:58 PM
#1
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De-Powering a power steering rack.
Anyone done this? My buddy Ted did his, but he did it the right way and got a manual rack.
I don't really see much need for power steering on a Miata and will not be installing the pump on hte new engine and since I'll have room to work when I swap engines I want to do this. There was a good tech article on doing this in a Sport Compact Car magazine back when they had good tech articles and weren't the ricerboi comic book that they are now. However that was then and like almost 8 years ago... so ****.
I don't really see much need for power steering on a Miata and will not be installing the pump on hte new engine and since I'll have room to work when I swap engines I want to do this. There was a good tech article on doing this in a Sport Compact Car magazine back when they had good tech articles and weren't the ricerboi comic book that they are now. However that was then and like almost 8 years ago... so ****.
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09-10-2007, 02:00 PM
#2
IMO, putting a manual rack in the power(depowered) rack cars... is a downgrade.
Here is a de-powering guide specifically for the Miata rack though, http://www.flyinmiata.com/tech/depower.php
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09-10-2007, 02:00 PM
#3
http://www.flyinmiata.com/tech/depower.php
Many of the guys on here swear by a PS depower. Most of them just loop the lines, though FM does show how to take the seal out.
Many of the guys on here swear by a PS depower. Most of them just loop the lines, though FM does show how to take the seal out.
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09-10-2007, 03:33 PM
#5
I have looped lines, it's a big improvement over having a powered rack. I can really tell what people meant when they say the factory PS is overboosted.
The factory manual rack is too slow a ratio for me. I like having the same ratio as PS without the pump. I'll be doing the full depower when I get home.
The factory manual rack is too slow a ratio for me. I like having the same ratio as PS without the pump. I'll be doing the full depower when I get home.
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09-10-2007, 04:56 PM
#6
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I did it, haven't even removed the seals because I'm lazy but it works great.
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09-10-2007, 06:04 PM
#9
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http://www.flyinmiata.com/tech/depower.php
Many of the guys on here swear by a PS depower. Most of them just loop the lines, though FM does show how to take the seal out.
Many of the guys on here swear by a PS depower. Most of them just loop the lines, though FM does show how to take the seal out.
Mainly just because its a PITA to pull the whole assembly...I may be pulling my motor soon if I do, thats coming out too.
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09-10-2007, 07:54 PM
#13
I am doing the depower as well. I ordered the non-ps pulley assembly and belt for the car. In no way will I get rid of the A/C while I live in FL. For those of you that are interested in removing the PS pump along with depowering your rack, and you want to keep your A/C, will need this belt tensioner assembly. They run about 140.00 new. I lucked out and found a used one for less than half of that shipped to my door.
Here are the factory part numbers, and keep in mind this is for a 1.8L. It might be the same for the 1.6L.
BP0115930-Pulley bracket assembly
997841040-flange bolts, you will need 3
Here are the factory part numbers, and keep in mind this is for a 1.8L. It might be the same for the 1.6L.
BP0115930-Pulley bracket assembly
997841040-flange bolts, you will need 3
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09-11-2007, 10:02 PM
#15
I've driven a factory power, factory manual, looped line depower, and just did the FM style depower on my 90. I can't say which was my favorite yet because I haven't had the 90 aligned since it came back online last weekend after all the mods. I can definitely say two things however. I loved the factory manual, and I hated the looped line. Depowering FM style was straightforward, however, I had darn near an empty engine bay to work with. I also have to hope that the shop can align my car properly, as it's way out of whack right now.
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