For those who have converted to use 94-04 power steering rack w/MM adapter shaft

JasonRP · Jun 30, 2021

Hi folks,
For those who have done the rack upgrade from a 94-04 mustang, and you used the Maximum Motorsports MMST-13 adapter shaft (no rag joint), how does it feel?
I know that the upgraded/newer rack has a different power assist level, but:
1) what's the ratio lock to lock, compared to my '89 GT? Same?
2) without the rag joint, is it too harsh? I've got a driver. If the biggest change is more road feel, but not a crazy amount- that sounds good. If it is MUCH harsher, and best suited for roadrace/autocross/etc., then I think I should probably avoid.

Thanks!
Jason

Mustang5L5 · Jul 1, 2021

Lock to lock ratio is the same. 2.5 turns. It actually varies a tiny bit because some of the 99-04 cars had rack limiters so the ranger is around 2.25-2.5 turns due to the limiters. It’s still a 15:1 rack like the fox sport rack.

no it’s not harsh. You feel more of the road, but harsh is not the word id use to describe it. It’s definitely tolerable on a street car

eighty5fox · Jul 1, 2021

I've recently done this swap and upgraded to a Volvo electric pump and i say it feels damn nice a huge upgrade compared to the factory stuff.

foxbodybill89 · Jul 6, 2021

You'll like it, I've got the steering shaft and even the aluminum rack bushings and it still isn't harsh. It just feels "solid", like you have precise control and no delayed actions from slop in the system. Only difference in road feel is a little bit of vibration or shimmy and you "feel" different types of pavement a little more, but you get used to it.

For those who have converted to use 94-04 power steering rack w/MM adapter shaft

JasonRP

Mustang5L5

That is…until I whipped out my Bissell

eighty5fox

Mustang Master

foxbodybill89

Active Member

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For those who have converted to use 94-04 power steering rack w/MM adapter shaft

JasonRP

Mustang5L5

That is…until I whipped out my Bissell

eighty5fox

Mustang Master

foxbodybill89

Active Member

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