Boig Motorsports

Visit our community sponsor

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 9 of 9

Thread: Manual rack dimensions issue

  1. #1
    Future Mk4 builder/owner
    Join Date
    Jul 2011
    Location
    Harleysville, pa (near Philly)
    Posts
    168
    Post Thanks / Like
    Blog Entries
    1

    Manual rack dimensions issue

    Can someone who has the manual rack from ffr not installed yet do me a huge favor and measure the total rack length, From thread to thread NOT INCLUDING THE OUTER TIE RODS.

    I have a manual rack I purchased from someone on the forum a few years ago (while collecting parts before I ordered my MK4 base kit) that only had a couple hundred miles or so on it. Now that I'm installing it on my new MK4 kit it doesn't seem to be wide enough with the 5-inch tie rod ends. I measured my rack and it's about 44-1/4 inches wide from thread to thread BEFORE putting on the outer tie rod ends.

    My issue is, in the MK4 complete manual it says to screw the tie rods on about 1-2 inches onto the rack, but when I do that, both of my wheels are way pointed into each other. so I really believe this rack may have been cut on the ends for some reason and they were using a longer outer tie rod for some reason. Any help on this would be great.

    Btw, I am using the MK4 spindles with my build and the ffr lower control arms
    Attached Images Attached Images

  2. #2
    Senior Member chmhasy's Avatar
    Join Date
    Feb 2011
    Location
    North CT
    Posts
    432
    Post Thanks / Like
    you may need the steering rack extension. look in the base manual on page 162

  3. #3
    Senior Member karlos's Avatar
    Join Date
    Aug 2013
    Location
    Littleton, CO
    Posts
    412
    Post Thanks / Like
    Mine measures right at 48", end-to-end. The actual threaded section measure 4-3/8" on both ends.

  4. #4
    Future Mk4 builder/owner
    Join Date
    Jul 2011
    Location
    Harleysville, pa (near Philly)
    Posts
    168
    Post Thanks / Like
    Blog Entries
    1
    Yeah that's my problem. 4 inches different from yours, and i cant even get my tierods to start. very frustrated and feel like i was taken advantage of with this purchase.

  5. #5
    Future Mk4 builder/owner
    Join Date
    Jul 2011
    Location
    Harleysville, pa (near Philly)
    Posts
    168
    Post Thanks / Like
    Blog Entries
    1
    Quote Originally Posted by chmhasy View Post
    you may need the steering rack extension. look in the base manual on page 162
    I have the rack extensions but even they are only about 1-1/2 inches each. Hopefully that will be enough. i also am not sure if the rack extensions will work with the manual rack OR if they are only designed for the power racks.

    I wont know until i get home from my work trip on friday, when i can take apart my rack and see. I hope it will cure the problem.

  6. #6
    Senior Member edwardb's Avatar
    Join Date
    Feb 2011
    Location
    Lake Orion, Michigan
    Posts
    10,568
    Post Thanks / Like
    The rack extensions generally are only intended for power racks. Unless yours is really old or not an FF supplied rack, the manual racks for a number of years from FF are the proper wider width. The extenders may not fit plus if the rack is already the wider version, could mess up your front end geometry with them added. Doesn't sound good for the rack you have.

    This is from a post on the other forum briefly explaining how the front end should line up with the proper width rack. "If you check, the outer pivot point (ball) is most likely about the same distance inboard of a line drawn between the outer pivot points of the upper and lower control arms..." This thread has a lot of detail, but unfortunately also does have broken Photobucket links. http://www.ffcars.com/forums/63-brak...teer-idea.html
    Last edited by edwardb; 10-26-2017 at 12:11 AM.
    Build 1: Mk3 Roadster #5125. Sold 11/08/2014. Build 2: Mk4 Roadster #7750. Sold 04/10/2017. Build Thread
    Build 3: Mk4 Roadster 20th Anniversary #8674. Sold 09/07/2020. Build Thread and Video. Build 4: Gen 3 Type 65 Coupe #59. Gen 3 Coyote. Legal 03/04/2020. Build Thread and Video
    Build 5: 35 Hot Rod Truck #138. LS3 and 4L65E auto. Rcvd 01/05/2021. Legal 04/20/2023. Build Thread. Sold 11/9/2023.

  7. #7
    slpro1207's Avatar
    Join Date
    Jan 2017
    Location
    Moorpark, CA
    Posts
    301
    Post Thanks / Like
    Blog Entries
    3
    It may be a bitter pill to swallow, but it might be less frustrating to pick up a new rack from FFR. $300. And you know what you have. Sorry it’s not working for your new build.
    MK4 delivered 2/24/2017. Complete kit #9023,IRS, Power Steering, Leather, heater, 17" wheels, sway bar ft & rr, tremec 600 and Gordon Levy Racing SBF 427. First start and go kart 8/19/2017. Graduated 1/15/2018
    MK4 #9230 complete kit delivered 1/27/2018. IRS, PS, leather, Tremic 600, SBF 427. Graduation 10/15/2018
    MK3 #5253 donor bought unfinished. SBF 331, T5 Trans.

  8. #8
    Boydster's Avatar
    Join Date
    Aug 2014
    Location
    Maryville, TN
    Posts
    1,104
    Post Thanks / Like
    I have a manual rack, brand new in the box, from F5R, that I'm not using. I can check the length on it later today and maybe help you out some.
    ---Boyd---
    MkIV #9042 build thread
    www.boss427.us
    427W, TKO600, Moser 3.55 rear.
    Delivered Feb 2017, Graduated Nov 4, 2019

  9. #9
    Banned
    Join Date
    Apr 2017
    Location
    Loveland, CO
    Posts
    318
    Post Thanks / Like
    There's more to a rack than just the total length. If the distance between the ball joints is not correct, it will NOT work properly. You'd have huge bump steer.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Breeze

Visit our community sponsor