Tell me about the 993 steering rack
10-30-2018, 12:25 AM
#16
Three Wheelin'
Having swapped in a 993 rack not long ago, I can give you my take. First, the quicker ratio is barely noticeable. Second, the power assist is much stronger (less steering effort). I imagine that the increased caster of the 993 was able to partly make up for increased assist. Though more caster will dull the steering, it also adds more weight, straight line stability, and increases camber as the wheel is turned. The latter effect gives more bite to the front tires in a turn. The rack does bolt in with no problems, c2 or c4. Hope that helps!
11-01-2018, 12:07 AM
#17
Rennlist Member
Thank you very much gentleman!
Thomas for the tips. Bill for the photos. Spyrex for the clarification and insight. Nick for the review.
Mine will go in with a Cup electric power steering pump so Im not sure what net effect that will have on the level of assist. The rest sounds all fairly positive. Along with new bushings, tie rods, etc, I doubt I'll experience any downside compared to what I've gotten used to over the first 10k miles of ownership with all of the above being totally shot.
I guess one question I could ask is; does anyone have a preferred brake line bending tool? That's one I haven't added to the collection yet.
Thomas for the tips. Bill for the photos. Spyrex for the clarification and insight. Nick for the review.
Mine will go in with a Cup electric power steering pump so Im not sure what net effect that will have on the level of assist. The rest sounds all fairly positive. Along with new bushings, tie rods, etc, I doubt I'll experience any downside compared to what I've gotten used to over the first 10k miles of ownership with all of the above being totally shot.
I guess one question I could ask is; does anyone have a preferred brake line bending tool? That's one I haven't added to the collection yet.
11-13-2018, 01:33 PM
#18
Rennlist Member
For those that upgraded to the 993 booster and MC, is there anything else you needed to do or was it bolt in? I had a shop do this upgrade on my car, and apparently the 993 booster does not fit into the linkage housing correctly. It was crooked, and the booster was damaged before we figured that out. Is there a mount that also needs to be used?
01-07-2019, 02:55 AM
#19
Rennlist Member
Thread Starter
Didn’t see this
you need
booster
master
mount bracket
12 to 10mm flare brack lines from master to body.
You may need to clearance the booster a bit depending on your sway bars.
you need
booster
master
mount bracket
12 to 10mm flare brack lines from master to body.
You may need to clearance the booster a bit depending on your sway bars.
01-07-2019, 06:48 AM
#21
Drifting
No. Just re use the parts but buy a new washer, No 15. There's one issue though with part 16. The end/flange facing 15 is like 1-2 mm to narrow for the 993 Booster so you have to grind off some metal. I used a Dremel. If you find use parts inclduing the Bracket No 16 it's all just bolt on.
01-07-2019, 08:04 AM
#22
Good info- so the 964 bracket (16) can be used with a little grinding. I’ll get the booster etc new so that saves me having to shop around for the used bracket.
I’ll add #15 to the list.
I’ll add #15 to the list.
01-07-2019, 01:24 PM
#23
Rennlist Member
Thread Starter
Guys to be clear, on my car we were able to use #16 no problem. These were the parts I ordered:
993 master cylinder - 99335591000
993 brake booster - 99335502310
993 master cylinder support bracket - 99335516303
993 booster gasket - 99335530100
BMW brake lines 10mm to 12mm, bend to fit 2x BMW #34326752405
993 master cylinder - 99335591000
993 brake booster - 99335502310
993 master cylinder support bracket - 99335516303
993 booster gasket - 99335530100
BMW brake lines 10mm to 12mm, bend to fit 2x BMW #34326752405
01-08-2019, 01:15 AM
#25
Rennlist Member
Thread Starter
End of master to the subframe. Iirc
01-08-2019, 01:16 AM
#26
Rennlist Member
16 didn’t fit for me, but I bought a 993 one rather than grinding metal. They’re $50-80 on eBay.